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1plq

CRYSTAL STRUCTURE OF THE EUKARYOTIC DNA POLYMERASE PROCESSIVITY FACTOR PCNA

Method: X-RAY DIFFRACTION
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1. Protein Identity and Related Structures Protein Identity & Related Structures

PROLIFERATING CELL NUCLEAR ANTIGEN (PCNA)

Saccharomyces cerevisiae

UniProt P15873

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 3 MERCURY (II) ION × 6 water × 3 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
3f1w 4l60 4l6p 4l6p 4l6p 5v7m

6 assemblies

Homodimer
3gpn 3l0x

2 assemblies

Homotetramer

None

Other homooligomers
1plq 1plr 3f1w 3gpm 4yhr 5t9d 5v7k 5v7l 5v7m 6cx2 6cx3 6cx4

16 assemblies; showing the first 12

Heteromeric or nucleic-acid complex
1sxj 2od8 3k4x 3l0w 3l10 3pge 3v60 3v61 3v62 3v62 5jne 5jne

38 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name PCNA_YEAST
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–258； UniProt 1–258

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.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id1plq
Deposition date deposition_date1995-01-02
Structure title titleCRYSTAL STRUCTURE OF THE EUKARYOTIC DNA POLYMERASE PROCESSIVITY FACTOR PCNA
Keywords keywordsDNA-BINDING, NUCLEAR PROTEIN, DNA REPLICATION, PROCESSIVITY FACTOR; DNA-BINDING
Experimental Method methodX-RAY DIFFRACTION
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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

1plq__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1plq__assembly_1__model_1 | I(q)

10-2 10-1 106 107 108 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1plq__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg（Guinier）33.14 Å
Rg (electron density)31.99 Å
Total Rg32.78 Å
Atom count6096
Residues774
Excluded volume109870 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1plq__assembly_1__model_1 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (3)

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6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1plqa1
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.131 — DNA clamp
Superfamily Superfamily superfamilyd.131.1 — DNA clamp
Family Family familyd.131.1.2 — DNA polymerase processivity factor
Domain ID domain_idd1plqa2
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.131 — DNA clamp
Superfamily Superfamily superfamilyd.131.1 — DNA clamp
Family Family familyd.131.1.2 — DNA polymerase processivity factor

CATH v4.4 (1 domains)

Domain ID domain_id1plqA00
Class class3 — Alpha Beta
Architecture architecture70 — Box
Topology topology10 — Proliferating Cell Nuclear Antigen
Homologous superfamily homologous superfamily10 —
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7. Citations (4)