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8d96

Human DNA polymerase alpha/primase elongation complex I bound to primer/template

Method: ELECTRON MICROSCOPY Dmax: 126.7 Å Quality: GOOD
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1. Protein Identity and Related Structures Protein Identity & Related Structures

DNA primase large subunit

Homo sapiens

UniProt P49643

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein–DNA Heteromer Protein × 2 DNA 2 PDB declaration: tetrameric（4） Consistent with all polymer counts Chain B； UniProt 1–509 Not recorded DNA polymerase alpha catalytic subunit × 1 （P09884） ;DNA/RNA (5'-GTP)-R(P*GP*CP*GP*GP*CP*AP*CP*G)-D(P*AP*CP*C)-3') ; × 1 ;DNA (5'-D(*AP*TP*AP*AP*TP*GP*GP*TP*CP*GP*TP*GP*CP*CP*GP*CP*CP*AP*AP*TP*AP*A)-3') ; × 1 SF4 IRON/SULFUR CLUSTER × 1 MG MAGNESIUM ION × 1 DTP 2'-DEOXYADENOSINE 5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5；CHAPSO is made fresh at 80 mM before added to the sample at a final concentration of 4-8 mM immediately before vitrification. cryo-EM vitrification conditions：Cryogen ETHANE Resolution 3.35 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB Difference from Current Entry 8D96 Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
3L9Q Crystal structure of human polymerase alpha-primase p58 iron-sulfur cluster domain Deposited 2010-01-05 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric
Chain A 272–464（193 aa） Fragment：iron-sulfur cluster domain (UNP residues 272-464)
Chain B 272–464（193 aa） Fragment：iron-sulfur cluster domain (UNP residues 272-464)
Not recorded SF4 IRON/SULFUR CLUSTER × 4 SO4 SULFATE ION × 10 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；294 K；0.1 M Tris pH 8.5, 15% PEG 3250, 0.2 M LiSO4, VAPOR DIFFUSION, SITTING DROP, temperature 294K
Resolution 1.70 Å R-free 0.169
3L9Q Crystal structure of human polymerase alpha-primase p58 iron-sulfur cluster domain Deposited 2010-01-05 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric
Chain A 272–464（193 aa） Fragment：iron-sulfur cluster domain (UNP residues 272-464)
Chain B 272–464（193 aa） Fragment：iron-sulfur cluster domain (UNP residues 272-464)
Not recorded SF4 IRON/SULFUR CLUSTER × 2 SO4 SULFATE ION × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；294 K；0.1 M Tris pH 8.5, 15% PEG 3250, 0.2 M LiSO4, VAPOR DIFFUSION, SITTING DROP, temperature 294K
Resolution 1.70 Å R-free 0.169
3Q36 Crystal structure of the 4Fe-4S cluster domain of human DNA primase large subunit Deposited 2010-12-21 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 266–457（192 aa） Fragment：4Fe-4S cluster domain (UNP residues 266-457)
Not recorded SF4 IRON/SULFUR CLUSTER × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；295 K；0.2 M magnesium acetate tetrahydrate, 0.05 M sodium cacodylate, 15% w/v PEG8000, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 295K
Resolution 2.50 Å R-free 0.250
3Q36 Crystal structure of the 4Fe-4S cluster domain of human DNA primase large subunit Deposited 2010-12-21 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain B 266–457（192 aa） Fragment：4Fe-4S cluster domain (UNP residues 266-457)
Not recorded SF4 IRON/SULFUR CLUSTER × 1 FE FE (III) ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；295 K；0.2 M magnesium acetate tetrahydrate, 0.05 M sodium cacodylate, 15% w/v PEG8000, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 295K
Resolution 2.50 Å R-free 0.250
4BPU Crystal structure of human primase in heterodimeric form, comprising PriS and truncated PriL lacking the C-terminal Fe-S domain. Deposited 2013-05-28 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain B 1–253（253 aa） Fragment：RESIDUES 1-253
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions 100MM TRIS-HCL/BICINE PH 8.5, 20% GLYCEROL, 10% PEG4000 AND 20MM EACH OF AN ALCOHOL MIX COMPRISING 1,6-HEXANEDIOL, 1-BUTANOL, 1,2-PROPANEDIOL, 2-PROPANOL, 1,4- BUTANEDIOL AND 1,3-PROPANEDIOL
Resolution 2.70 Å R-free 0.245
4BPU Crystal structure of human primase in heterodimeric form, comprising PriS and truncated PriL lacking the C-terminal Fe-S domain. Deposited 2013-05-28 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 4 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain D 1–253（253 aa） Fragment：RESIDUES 1-253
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions 100MM TRIS-HCL/BICINE PH 8.5, 20% GLYCEROL, 10% PEG4000 AND 20MM EACH OF AN ALCOHOL MIX COMPRISING 1,6-HEXANEDIOL, 1-BUTANOL, 1,2-PROPANEDIOL, 2-PROPANOL, 1,4- BUTANEDIOL AND 1,3-PROPANEDIOL
Resolution 2.70 Å R-free 0.245
4BPW Crystal structure of human primase bound to UTP Deposited 2013-05-28 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain B 1–253（253 aa） Fragment：PRIL, RESIDUES 1-253
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions 100MM TRIS-HCL/BICINE PH 8.5, 20% GLYCEROL, 10% PEG4000 AND 20MM EACH OF AN ALCOHOL MIX COMPRISING 1,6-HEXANEDIOL, 1-BUTANOL, 1,2-PROPANEDIOL, 2-PROPANOL, 1,4-BUTANEDIOL AND 1,3-PROPANEDIOL.
Resolution 3.00 Å R-free 0.253
4BPW Crystal structure of human primase bound to UTP Deposited 2013-05-28 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 4 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain D 1–253（253 aa） Fragment：PRIL, RESIDUES 1-253
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions 100MM TRIS-HCL/BICINE PH 8.5, 20% GLYCEROL, 10% PEG4000 AND 20MM EACH OF AN ALCOHOL MIX COMPRISING 1,6-HEXANEDIOL, 1-BUTANOL, 1,2-PROPANEDIOL, 2-PROPANOL, 1,4-BUTANEDIOL AND 1,3-PROPANEDIOL.
Resolution 3.00 Å R-free 0.253
4BPX Crystal structure of human primase in complex with the primase- binding motif of DNA polymerase alpha Deposited 2013-05-28 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Insufficient information Heteromer；Protein × 2 PDB declaration: dimeric
Chain D 19–253（235 aa） Fragment：PRIMASE-BINDING MOTIF RESIDUES 1445-1462, PRIL RESIDUES 19-253
Not recorded ZN ZINC ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions 100MM TRIS-HCL/BICINE PH 8.5, 20% GLYCEROL, 10% PEG4000 AND 20MM EACH OF AN ALCOHOL MIX COMPRISING 1,6-HEXANEDIOL, 1-BUTANOL, 1,2-PROPANEDIOL, 2-PROPANOL, 1,4- BUTANEDIOL AND 1,3-PROPANEDIOL.
Resolution 3.40 Å R-free 0.267
4BPX Crystal structure of human primase in complex with the primase- binding motif of DNA polymerase alpha Deposited 2013-05-28 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 3 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric
Chain B 19–253（235 aa） Fragment：PRIMASE-BINDING MOTIF RESIDUES 1445-1462, PRIL RESIDUES 19-253
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions 100MM TRIS-HCL/BICINE PH 8.5, 20% GLYCEROL, 10% PEG4000 AND 20MM EACH OF AN ALCOHOL MIX COMPRISING 1,6-HEXANEDIOL, 1-BUTANOL, 1,2-PROPANEDIOL, 2-PROPANOL, 1,4- BUTANEDIOL AND 1,3-PROPANEDIOL.
Resolution 3.40 Å R-free 0.267
4RR2 Crystal structure of human primase Deposited 2014-11-05 Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric
Chain B 1–509（509 aa）
Not recorded ZN ZINC ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；295 K；50 mM Tris-HCl pH 8.5, 7.5% v/v ethanol and 2 mM TCEP, VAPOR DIFFUSION, SITTING DROP, temperature 295K
Resolution 2.65 Å R-free 0.271
4RR2 Crystal structure of human primase Deposited 2014-11-05 Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric
Chain D 1–509（509 aa）
Not recorded ZN ZINC ION × 1 SF4 IRON/SULFUR CLUSTER × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；295 K；50 mM Tris-HCl pH 8.5, 7.5% v/v ethanol and 2 mM TCEP, VAPOR DIFFUSION, SITTING DROP, temperature 295K
Resolution 2.65 Å R-free 0.271
5DQO Crystal structure of Y347F mutant of human primase p58 iron-sulfur cluster domain Deposited 2015-09-15 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric
Chain A 272–464（193 aa） Fragment：p58C domain (UNP residues 272-464)
Chain B 272–464（193 aa） Fragment：p58C domain (UNP residues 272-464)
Mutation：Y347F Mutation：Y347F SF4 IRON/SULFUR CLUSTER × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；300 mM lithium sulfate, 100 mM Tris, pH 8.5, 20% PEG3350
Resolution 2.30 Å R-free 0.275
5DQO Crystal structure of Y347F mutant of human primase p58 iron-sulfur cluster domain Deposited 2015-09-15 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric
Chain C 272–464（193 aa） Fragment：p58C domain (UNP residues 272-464)
Chain D 272–464（193 aa） Fragment：p58C domain (UNP residues 272-464)
Mutation：Y347F Mutation：Y347F SF4 IRON/SULFUR CLUSTER × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295 K；300 mM lithium sulfate, 100 mM Tris, pH 8.5, 20% PEG3350
Resolution 2.30 Å R-free 0.275
5EXR Crystal structure of human primosome Deposited 2015-11-24 Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric
Chain B 1–509（509 aa）
Not recorded ZN ZINC ION × 3 SF4 IRON/SULFUR CLUSTER × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；295 K；0.2 M lithium sulphate, 50 mM TRIS HCl pH 8.5, 2 mM TCEP pH 7.5, 11.2% w/v PEG 4,000, 3% v/v ethanol, 0.5% v/v polypropylene glycol P400 and 0.2 mM EDTA
Resolution 3.60 Å R-free 0.326
5EXR Crystal structure of human primosome Deposited 2015-11-24 Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric
Chain F 1–509（509 aa）
Not recorded ZN ZINC ION × 3 SF4 IRON/SULFUR CLUSTER × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；295 K；0.2 M lithium sulphate, 50 mM TRIS HCl pH 8.5, 2 mM TCEP pH 7.5, 11.2% w/v PEG 4,000, 3% v/v ethanol, 0.5% v/v polypropylene glycol P400 and 0.2 mM EDTA
Resolution 3.60 Å R-free 0.326
5F0Q Crystal structure of C-terminal domain of the human DNA primase large subunit with bound DNA template/RNA primer Deposited 2015-11-28 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: trimeric
Chain A 266–456（191 aa） Fragment：UNP residues 266-456
Not recorded SF4 IRON/SULFUR CLUSTER × 1 MG MAGNESIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；295 K；0.18 M lithium sulfate, 50 mM sodium citrate, 2 mM TCEP, 0.1 M sodium malonate, 0.1 M Hepes-NaOH (pH 7.0), 19.7% PEG 8,000 and 0.02 M magnesium chloride
Resolution 2.21 Å R-free 0.258
5F0Q Crystal structure of C-terminal domain of the human DNA primase large subunit with bound DNA template/RNA primer Deposited 2015-11-28 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Monomer；Protein × 1 PDB declaration: trimeric
Chain B 266–456（191 aa） Fragment：UNP residues 266-456
Not recorded SF4 IRON/SULFUR CLUSTER × 1 MG MAGNESIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；295 K；0.18 M lithium sulfate, 50 mM sodium citrate, 2 mM TCEP, 0.1 M sodium malonate, 0.1 M Hepes-NaOH (pH 7.0), 19.7% PEG 8,000 and 0.02 M magnesium chloride
Resolution 2.21 Å R-free 0.258
5F0S Crystal structure of C-terminal domain of the human DNA primase large subunit with bound DNA template/RNA primer and manganese ion Deposited 2015-11-28 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: trimeric
Chain A 266–456（191 aa） Fragment：UNP residues 266-456
Not recorded SF4 IRON/SULFUR CLUSTER × 1 MN MANGANESE (II) ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；295 K；Reservoir solution containe 0.18 M lithium sulfate, 50 mM sodium citrate, 2 mM TCEP, 0.1 M sodium malonate, 0.1 M Hepes-NaOH (pH 7.0), 19.7% PEG 8,000 and 0.02 M magnesium chloride. To exchange Mg to Mn crystals were soaked for 5 min in a reservoir solution containing 2 mM manganese chloride instead of magnesium chloride.
Resolution 3.00 Å R-free 0.269
5F0S Crystal structure of C-terminal domain of the human DNA primase large subunit with bound DNA template/RNA primer and manganese ion Deposited 2015-11-28 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Monomer；Protein × 1 PDB declaration: trimeric
Chain B 266–456（191 aa） Fragment：UNP residues 266-456
Not recorded SF4 IRON/SULFUR CLUSTER × 1 MN MANGANESE (II) ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；295 K；Reservoir solution containe 0.18 M lithium sulfate, 50 mM sodium citrate, 2 mM TCEP, 0.1 M sodium malonate, 0.1 M Hepes-NaOH (pH 7.0), 19.7% PEG 8,000 and 0.02 M magnesium chloride. To exchange Mg to Mn crystals were soaked for 5 min in a reservoir solution containing 2 mM manganese chloride instead of magnesium chloride.
Resolution 3.00 Å R-free 0.269
5I7M Crystal structure of Y345F mutant of human primase p58 iron-sulfur cluster domain Deposited 2016-02-17 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric
Chain A 272–457（186 aa） Fragment：iron-sulfur cluster domain (UNP residues 272-457)
Chain B 272–457（186 aa） Fragment：iron-sulfur cluster domain (UNP residues 272-457)
Mutation：Y345F Mutation：Y345F SF4 IRON/SULFUR CLUSTER × 2 SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277 K；75 mg/mL p58C Y345F in 20 mM MES, pH 6.5, 50 mM sodium chloride, reservoir solution: 100 mM Tris, pH 8.5, 150 mM lithium sulfate, 18% PEG3350
Resolution 1.93 Å R-free 0.250
6DHW Crystal structure of primase iron-sulfur domain (266-457) Deposited 2018-05-21 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric
Chain A 266–457（192 aa）
Chain B 266–457（192 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 2 SO4 SULFATE ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；289 K；100 mM TRIS-HCl pH 8.5, 400 mM LiSO4, 18% PEG3350
Resolution 2.01 Å R-free 0.211
6DHW Crystal structure of primase iron-sulfur domain (266-457) Deposited 2018-05-21 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric
Chain A 266–457（192 aa）
Chain B 266–457（192 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 2 SO4 SULFATE ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；289 K；100 mM TRIS-HCl pH 8.5, 400 mM LiSO4, 18% PEG3350
Resolution 2.01 Å R-free 0.211
7OPL CryoEM structure of DNA Polymerase alpha - primase bound to SARS CoV nsp1 Deposited 2021-06-01 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric
Chain D 1–509（509 aa）
Not recorded ZN ZINC ION × 3 SF4 IRON/SULFUR CLUSTER × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.2
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.12 Å
7U5C Cryo-EM structure of human CST bound to DNA polymerase alpha-primase in a recruitment state Deposited 2022-03-02 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein–DNA Heteromer；Protein × 7 PDB declaration: octameric
Chain B 1–509（509 aa）
Not recorded ZN ZINC ION × 4 SF4 IRON/SULFUR CLUSTER × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.60 Å
8B9D Human replisome bound by Pol Alpha Deposited 2022-10-05 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein–DNA Heteromer；Protein × 21 PDB declaration: 23-meric
Chain P 1–509（509 aa）
Not recorded ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 3 MG MAGNESIUM ION × 3 ZN ZINC ION × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8D0B Human CST-DNA polymerase alpha/primase preinitiation complex bound to 4xTEL-foldback template Deposited 2022-05-26 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein–DNA Heteromer；Protein × 7 PDB declaration: octameric
Chain E 16–256（241 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；CHAPSO is only added just before sample vitrification.
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.43 Å
8D0K Human CST-DNA polymerase alpha/primase preinitiation complex bound to 4xTEL-foldback template - PRIM2C advanced PIC Deposited 2022-05-26 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein–DNA Heteromer；Protein × 7 PDB declaration: octameric
Chain E 2–509（508 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；CHAPSO is only added just before sample vitrification.
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.27 Å
8D9D Human DNA polymerase-alpha/primase elongation complex II bound to primer/template Deposited 2022-06-09 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein–DNA Heteromer；Protein × 4 PDB declaration: hexameric
Chain B 1–509（509 aa）
Not recorded ZN ZINC ION × 3 SF4 IRON/SULFUR CLUSTER × 1 MG MAGNESIUM ION × 2 DTP 2'-DEOXYADENOSINE 5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；CHAPSO is made fresh at 80 mM before added to the sample at a final concentration of 4-8 mM immediately before vitrification.
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.59 Å
8QJ7 Cryo-EM structure of human DNA polymerase alpha-primase in pre-initiation stage 1 Deposited 2023-09-12 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric
Chain D 1–509（509 aa）
Not recorded ZN ZINC ION × 3 MN MANGANESE (II) ION × 2 ATP ADENOSINE-5'-TRIPHOSPHATE × 1 SF4 IRON/SULFUR CLUSTER × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.07 Å
8VY3 Human DNA polymerase alpha/primase - AavLEA1 (1:40 molar ratio) Deposited 2024-02-06 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric
Chain B 22–455（434 aa）
Not recorded ZN ZINC ION × 3 SF4 IRON/SULFUR CLUSTER × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.98 Å
9C8V Human DNA polymerase alpha/primase - CHAPSO (4 mM) Deposited 2024-06-13 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric
Chain B 22–455（434 aa）
Not recorded ZN ZINC ION × 3 SF4 IRON/SULFUR CLUSTER × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.39 Å

21 other PDB entries and 32 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name PRI2_HUMAN
Isoform —
PDB entities 1
Chains and sequence ranges Author chain B； PDBConstruct 1–509； UniProt 1–509

DNA polymerase alpha catalytic subunit

Homo sapiens

UniProt P09884

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein–DNA Heteromer Protein × 2 DNA 2 PDB declaration: tetrameric（4） Consistent with all polymer counts Chain C； UniProt 1–1462 Not recorded DNA primase large subunit × 1 （P49643） ;DNA/RNA (5'-GTP)-R(P*GP*CP*GP*GP*CP*AP*CP*G)-D(P*AP*CP*C)-3') ; × 1 ;DNA (5'-D(*AP*TP*AP*AP*TP*GP*GP*TP*CP*GP*TP*GP*CP*CP*GP*CP*CP*AP*AP*TP*AP*A)-3') ; × 1 SF4 IRON/SULFUR CLUSTER × 1 MG MAGNESIUM ION × 1 DTP 2'-DEOXYADENOSINE 5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5；CHAPSO is made fresh at 80 mM before added to the sample at a final concentration of 4-8 mM immediately before vitrification. cryo-EM vitrification conditions：Cryogen ETHANE Resolution 3.35 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB Difference from Current Entry 8D96 Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
1K0P NMR Structures of the Zinc Finger Domain of Human DNA Polymerase-alpha Deposited 2001-09-20 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 1347–1377（31 aa） Fragment：zinc finger domain (residues 1347-1377)
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.8；296 K；Pressure ambient
NMR sample composition 3mM Zinc Finger Domain; 3.6mM Zn(II)nitrate | 90% H2O/10% D2O
Resolution not provided
1K18 Minimized Average NMR Structure of the Zinc Finger Domain of Human DNA Polymerase-alpha Deposited 2001-09-24 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 1347–1377（31 aa） Fragment：zinc finger domain (residues 1347-1377)
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.8；296 K；Pressure ambient
NMR sample composition 3mM Zinc Finger Peptide; 3.6 mM Zn(II)nitrate | 90% H2O/10% D2O
Resolution not provided
1N5G NMR Structures of the Zinc Finger Domain of Human DNA Polymerase-alpha Deposited 2002-11-05 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 1345–1382（38 aa） Fragment：zinc finger domain (residues 1345-1382)
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.2；296 K；Pressure ambient
NMR sample composition 3mM peptide, 3.6mM Zn(II)nitrate | 90% H2O/10% D2O
Resolution not provided
4BPX Crystal structure of human primase in complex with the primase- binding motif of DNA polymerase alpha Deposited 2013-05-28 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Insufficient information Heteromer；Protein × 2 PDB declaration: dimeric
Chain D 1445–1462（18 aa） Fragment：PRIMASE-BINDING MOTIF RESIDUES 1445-1462, PRIL RESIDUES 19-253
Not recorded ZN ZINC ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions 100MM TRIS-HCL/BICINE PH 8.5, 20% GLYCEROL, 10% PEG4000 AND 20MM EACH OF AN ALCOHOL MIX COMPRISING 1,6-HEXANEDIOL, 1-BUTANOL, 1,2-PROPANEDIOL, 2-PROPANOL, 1,4- BUTANEDIOL AND 1,3-PROPANEDIOL.
Resolution 3.40 Å R-free 0.267
4BPX Crystal structure of human primase in complex with the primase- binding motif of DNA polymerase alpha Deposited 2013-05-28 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 3 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric
Chain B 1445–1462（18 aa） Fragment：PRIMASE-BINDING MOTIF RESIDUES 1445-1462, PRIL RESIDUES 19-253
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions 100MM TRIS-HCL/BICINE PH 8.5, 20% GLYCEROL, 10% PEG4000 AND 20MM EACH OF AN ALCOHOL MIX COMPRISING 1,6-HEXANEDIOL, 1-BUTANOL, 1,2-PROPANEDIOL, 2-PROPANOL, 1,4- BUTANEDIOL AND 1,3-PROPANEDIOL.
Resolution 3.40 Å R-free 0.267
4Q5V Crystal structure of the catalytic core of human DNA polymerase alpha in ternary complex with an RNA-primed DNA template and aphidicolin Deposited 2014-04-17 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: trimeric
Chain A 336–1257（922 aa） Fragment：Human DNA polymerase apha catalytic core domain residues 336-1257
Mutation：V516A 2ZE (3R,4R,4aR,6aS,8R,9R,11aS,11bS)-4,9-bis(hydroxymethyl)-4,11b-dimethyltetradecahydro-8,11a-methanocyclohepta[a]naphthale ne-3,9-diol × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；295 K；100 mM KCl, 12.5 mM MgCl2, 25 mM Na-Cacodylate, pH 6.5, 6 % 2-propanol, 2 mM TCEP, VAPOR DIFFUSION, SITTING DROP, temperature 295 K
Resolution 2.52 Å R-free 0.268
4Q5V Crystal structure of the catalytic core of human DNA polymerase alpha in ternary complex with an RNA-primed DNA template and aphidicolin Deposited 2014-04-17 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 2 Other combination Monomer；Protein × 1 PDB declaration: trimeric
Chain E 336–1257（922 aa） Fragment：Human DNA polymerase apha catalytic core domain residues 336-1257
Mutation：V516A 2ZE (3R,4R,4aR,6aS,8R,9R,11aS,11bS)-4,9-bis(hydroxymethyl)-4,11b-dimethyltetradecahydro-8,11a-methanocyclohepta[a]naphthale ne-3,9-diol × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；295 K；100 mM KCl, 12.5 mM MgCl2, 25 mM Na-Cacodylate, pH 6.5, 6 % 2-propanol, 2 mM TCEP, VAPOR DIFFUSION, SITTING DROP, temperature 295 K
Resolution 2.52 Å R-free 0.268
4QCL Crystal structure of the catalytic core of human DNA polymerase alpha in ternary complex with an RNA-primed DNA template and dCTP Deposited 2014-05-12 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein–DNA Monomer；Protein × 1 PDB declaration: trimeric
Chain A 336–1257（922 aa） Fragment：Human dna polymerase apha catalytic core domain residues 336-1257
Mutation：V516A DCP 2'-DEOXYCYTIDINE-5'-TRIPHOSPHATE × 1 MG MAGNESIUM ION × 1 ZN ZINC ION × 3 K POTASSIUM ION × 1 1PE PENTAETHYLENE GLYCOL × 1 EDO 1,2-ETHANEDIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；298 K；reservoir solution: 0.8 mm zinc sulfate, 50 mm MES buffer pH 6.5, 8.8% v/v PEG MME 550; cryo solution: 100 mm potassium chloride, 0.8 mm zinc sulfate, 50 mm MES buffer pH 6.5, 1.1 magnesium chloride, 15% v/v PEG MME 550, 15% v/v ethylene glycol;, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.20 Å R-free 0.239
4Y97 Crystal Structure of human Pol alpha B-subunit in complex with C-terminal domain of catalytic subunit Deposited 2015-02-17 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric
Chain B 1265–1444（180 aa） Fragment：UNP residues 1265-1444
Not recorded ZN ZINC ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.6；295 K；The diffraction quality crystals are growing in 2-3 weeks in 100 mM ammonium acetate, 50 mM Na citrate pH 5.6, 10 - 10.4% w/v PEG 4000, 2 mM TCEP and 50 mM guanidine HCl.
Resolution 2.51 Å R-free 0.257
4Y97 Crystal Structure of human Pol alpha B-subunit in complex with C-terminal domain of catalytic subunit Deposited 2015-02-17 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric
Chain D 1265–1444（180 aa） Fragment：UNP residues 1265-1444
Not recorded ZN ZINC ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.6；295 K；The diffraction quality crystals are growing in 2-3 weeks in 100 mM ammonium acetate, 50 mM Na citrate pH 5.6, 10 - 10.4% w/v PEG 4000, 2 mM TCEP and 50 mM guanidine HCl.
Resolution 2.51 Å R-free 0.257
4Y97 Crystal Structure of human Pol alpha B-subunit in complex with C-terminal domain of catalytic subunit Deposited 2015-02-17 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric
Chain F 1265–1444（180 aa） Fragment：UNP residues 1265-1444
Not recorded ZN ZINC ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.6；295 K；The diffraction quality crystals are growing in 2-3 weeks in 100 mM ammonium acetate, 50 mM Na citrate pH 5.6, 10 - 10.4% w/v PEG 4000, 2 mM TCEP and 50 mM guanidine HCl.
Resolution 2.51 Å R-free 0.257
4Y97 Crystal Structure of human Pol alpha B-subunit in complex with C-terminal domain of catalytic subunit Deposited 2015-02-17 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 4 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric
Chain H 1265–1444（180 aa） Fragment：UNP residues 1265-1444
Not recorded ZN ZINC ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.6；295 K；The diffraction quality crystals are growing in 2-3 weeks in 100 mM ammonium acetate, 50 mM Na citrate pH 5.6, 10 - 10.4% w/v PEG 4000, 2 mM TCEP and 50 mM guanidine HCl.
Resolution 2.51 Å R-free 0.257
5EXR Crystal structure of human primosome Deposited 2015-11-24 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric
Chain C 335–1462（1128 aa）
Mutation：V516A ZN ZINC ION × 3 SF4 IRON/SULFUR CLUSTER × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；295 K；0.2 M lithium sulphate, 50 mM TRIS HCl pH 8.5, 2 mM TCEP pH 7.5, 11.2% w/v PEG 4,000, 3% v/v ethanol, 0.5% v/v polypropylene glycol P400 and 0.2 mM EDTA
Resolution 3.60 Å R-free 0.326
5EXR Crystal structure of human primosome Deposited 2015-11-24 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric
Chain G 335–1462（1128 aa）
Mutation：V516A ZN ZINC ION × 3 SF4 IRON/SULFUR CLUSTER × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；295 K；0.2 M lithium sulphate, 50 mM TRIS HCl pH 8.5, 2 mM TCEP pH 7.5, 11.2% w/v PEG 4,000, 3% v/v ethanol, 0.5% v/v polypropylene glycol P400 and 0.2 mM EDTA
Resolution 3.60 Å R-free 0.326
5IUD Human DNA polymerase alpha in binary complex with a DNA:DNA template-primer Deposited 2016-03-17 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein–DNA Monomer；Protein × 1 PDB declaration: trimeric
Chain A 338–1255（918 aa） Fragment：UNP Residues 338-1255
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；293 K；10% polyethylene glycol 4000, 0.2M sodium citrate, 10% isopropanol, 0.1M sodium citrate buffer (pH = 5.5)
Resolution 3.30 Å R-free 0.228
5IUD Human DNA polymerase alpha in binary complex with a DNA:DNA template-primer Deposited 2016-03-17 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 2 Protein–DNA Monomer；Protein × 1 PDB declaration: trimeric
Chain D 338–1255（918 aa） Fragment：UNP Residues 338-1255
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；293 K；10% polyethylene glycol 4000, 0.2M sodium citrate, 10% isopropanol, 0.1M sodium citrate buffer (pH = 5.5)
Resolution 3.30 Å R-free 0.228
5IUD Human DNA polymerase alpha in binary complex with a DNA:DNA template-primer Deposited 2016-03-17 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 3 Protein–DNA Monomer；Protein × 1 PDB declaration: trimeric
Chain G 338–1255（918 aa） Fragment：UNP Residues 338-1255
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；293 K；10% polyethylene glycol 4000, 0.2M sodium citrate, 10% isopropanol, 0.1M sodium citrate buffer (pH = 5.5)
Resolution 3.30 Å R-free 0.228
5IUD Human DNA polymerase alpha in binary complex with a DNA:DNA template-primer Deposited 2016-03-17 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 4 Protein–DNA Monomer；Protein × 1 PDB declaration: trimeric
Chain J 338–1255（918 aa） Fragment：UNP Residues 338-1255
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；293 K；10% polyethylene glycol 4000, 0.2M sodium citrate, 10% isopropanol, 0.1M sodium citrate buffer (pH = 5.5)
Resolution 3.30 Å R-free 0.228
6AS7 CRYSTAL STRUCTURE OF THE CATALYTIC CORE OF HUMAN DNA POLYMERASE ALPHA IN TERNARY COMPLEX WITH AN DNA-PRIMED DNA TEMPLATE AND DCTP Deposited 2017-08-23 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein–DNA Monomer；Protein × 1 PDB declaration: trimeric
Chain A 336–1257（922 aa）
Mutation：V516A DCP 2'-DEOXYCYTIDINE-5'-TRIPHOSPHATE × 1 MG MAGNESIUM ION × 2 CO COBALT (II) ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.6；298 K；6MM COCL2, 2 MM TCEP, 50 MM NA ACETATE PH 4.6, 225 MM 1,6HEXADEDIOL
Resolution 2.95 Å R-free 0.301
7N2M Crystal structure of DNA polymerase alpha catalytic core in complex with dCTP and template/primer having T-C mismatch at the post-insertion site Deposited 2021-05-29 Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: trimeric
Chain A 336–1257（922 aa）
Not recorded DCP 2'-DEOXYCYTIDINE-5'-TRIPHOSPHATE × 1 MG MAGNESIUM ION × 1 ZN ZINC ION × 4 K POTASSIUM ION × 1 1PE PENTAETHYLENE GLYCOL × 1 SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；295 K；0.8 mM zinc sulfate, 8.8% v/v PEG MME 550, and 50 mM MES pH 6.5
Resolution 2.90 Å R-free 0.228
7OPL CryoEM structure of DNA Polymerase alpha - primase bound to SARS CoV nsp1 Deposited 2021-06-01 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric
Chain A 334–1462（1129 aa）
Not recorded ZN ZINC ION × 3 SF4 IRON/SULFUR CLUSTER × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.2
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.12 Å
7U5C Cryo-EM structure of human CST bound to DNA polymerase alpha-primase in a recruitment state Deposited 2022-03-02 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein–DNA Heteromer；Protein × 7 PDB declaration: octameric
Chain C 335–1462（1128 aa）
Not recorded ZN ZINC ION × 4 SF4 IRON/SULFUR CLUSTER × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.60 Å
8B9D Human replisome bound by Pol Alpha Deposited 2022-10-05 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein–DNA Heteromer；Protein × 21 PDB declaration: 23-meric
Chain B 1–1462（1462 aa）
Not recorded ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 3 MG MAGNESIUM ION × 3 ZN ZINC ION × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8D0B Human CST-DNA polymerase alpha/primase preinitiation complex bound to 4xTEL-foldback template Deposited 2022-05-26 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein–DNA Heteromer；Protein × 7 PDB declaration: octameric
Chain F 324–1462（1139 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；CHAPSO is only added just before sample vitrification.
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.43 Å
8D0K Human CST-DNA polymerase alpha/primase preinitiation complex bound to 4xTEL-foldback template - PRIM2C advanced PIC Deposited 2022-05-26 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein–DNA Heteromer；Protein × 7 PDB declaration: octameric
Chain F 2–1462（1461 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；CHAPSO is only added just before sample vitrification.
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.27 Å
8D9D Human DNA polymerase-alpha/primase elongation complex II bound to primer/template Deposited 2022-06-09 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein–DNA Heteromer；Protein × 4 PDB declaration: hexameric
Chain C 1–1462（1462 aa）
Not recorded ZN ZINC ION × 3 SF4 IRON/SULFUR CLUSTER × 1 MG MAGNESIUM ION × 2 DTP 2'-DEOXYADENOSINE 5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；CHAPSO is made fresh at 80 mM before added to the sample at a final concentration of 4-8 mM immediately before vitrification.
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.59 Å
8QJ7 Cryo-EM structure of human DNA polymerase alpha-primase in pre-initiation stage 1 Deposited 2023-09-12 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric
Chain A 1–1462（1462 aa）
Not recorded ZN ZINC ION × 3 MN MANGANESE (II) ION × 2 ATP ADENOSINE-5'-TRIPHOSPHATE × 1 SF4 IRON/SULFUR CLUSTER × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.07 Å
8VY3 Human DNA polymerase alpha/primase - AavLEA1 (1:40 molar ratio) Deposited 2024-02-06 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric
Chain C 338–1456（1119 aa）
Not recorded ZN ZINC ION × 3 SF4 IRON/SULFUR CLUSTER × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.98 Å
9C8V Human DNA polymerase alpha/primase - CHAPSO (4 mM) Deposited 2024-06-13 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric
Chain C 338–1456（1119 aa）
Not recorded ZN ZINC ION × 3 SF4 IRON/SULFUR CLUSTER × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.39 Å
9MJ5 Catalytic domain of human DNA polymerase alpha in complex with DNA and RPA Deposited 2024-12-13 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein–DNA Heteromer；Protein × 4 PDB declaration: hexameric
Chain S 335–1244（910 aa）
Not recorded ZN ZINC ION × 1 MG MAGNESIUM ION × 1 DCP 2'-DEOXYCYTIDINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å

21 other PDB entries and 30 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name DPOLA_HUMAN
Isoform —
PDB entities 2
Chains and sequence ranges Author chain C； PDBConstruct 1–1462； UniProt 1–1462

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

SAXS profile for 8d96

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8d96
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8d96
Deposition date deposition_date2022-06-09
Structure title titleHuman DNA polymerase alpha/primase elongation complex I bound to primer/template
Keywords keywordsDNA replication, human DNA polymerase alpha/primase, human primosome, elongation complex, REPLICATION; REPLICATION
Experimental Method methodELECTRON MICROSCOPY
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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier37.81 Å
Radius of gyration Rg (electron density) rg_electron38.00 Å
Forward intensity I(0) i0282445000.00
Molecular weight molecular_weight131750.0 kDa
Excluded volume excluded_volume163160 ų
Envelope volume envelope_volume229510 ų
Hydration-shell volume shell_volume51231 ų
Envelope diameter envelope_diameter132.4 Å
Shell Rg shell_rg43.13 Å
Envelope Rg envelope_rg37.43 Å
Shape Rg shape_rg37.99 Å
Total Rg total_rg38.36 Å
Total atoms total_atoms9203
Residues n_residues1086
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 Å−1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3
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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax126.7 Å
Rg (real space) rg_real37.86 Å
Rg uncertainty (real space) rg_real_error0.98 Å
I(0) (real space) i0_real2.8240e+08
I(0) uncertainty (real space) i0_real_error4.7820e+06
Rg (reciprocal space) rg_reciprocal37.83 Å
I(0) (reciprocal space) i0_reciprocal282400000.0000
Solution quality estimate total_estimate0.8856
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary45.2 Å
Skewness Skewness skewness0.352
Kurtosis Kurtosis kurtosis-0.362
Angular range angular_range— – 0.2100 Å−1
Current regularization parameter α current_alpha0.0001
Highest regularization parameter α highest_alpha65540000.0000
Real-space data points n_real_points43
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.881; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.994; Smooth: 0.870
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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (7)

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8. Citations (1)

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9. Files and Curves (10)