6kig

Structure of cyanobacterial photosystem I-IsiA supercomplex

Method: ELECTRON MICROSCOPY D_max: 257.6 Å Quality: EXCELLENT

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1. Protein Identity and Related Structures Protein Identity & Related Structures

Photosystem I P700 chlorophyll a apoprotein A1

OrganismNot specified

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 heterocomplex Heteromer Protein × 51 PDB declaration: 51-meric（51） Consistent with protein copy count	Chain A； UniProt 1–763 Chain G； UniProt 1–763 Chain e； UniProt 1–763	Not recorded	Photosystem I P700 chlorophyll a apoprotein A2 × 3 （Q31LJ1） Photosystem I iron-sulfur center × 3 （Q31QV2） Photosystem I reaction center subunit II × 3 （Q31PI7） Photosystem I reaction center subunit IV × 3 （Q31NL7） Photosystem I reaction center subunit III × 3 （Q31NT9） Photosystem I PsaI protein × 3 （P95823） Photosystem I reaction center subunit IX × 3 （Q31NU0） Photosystem I reaction center subunit PsaK × 3 （Q31PR9） Photosystem I reaction center subunit XI × 3 （P95822） PsaM × 3 Iron stress-induced chlorophyll-binding protein × 18 （P15347） CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 18 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.90 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 6KIG	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
6KIF Structure of cyanobacterial photosystem I-IsiA-flavodoxin supercomplex Deposited 2019-07-18	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 54 PDB declaration: 54-meric	Chain A 1–763（763 aa） Chain G 1–763（763 aa） Chain e 1–763（763 aa）	Not recorded	CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 12 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24 FMN FLAVIN MONONUCLEOTIDE × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.30 Å

1 other PDB entries and 1 assemblies. Open the comparison page and filter oligomeric states

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UniProt name	PSAA_SYNE7
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–763； UniProt 1–763 Author chain G； PDBConstruct 1–763； UniProt 1–763 Author chain e； PDBConstruct 1–763； UniProt 1–763

Photosystem I P700 chlorophyll a apoprotein A2

OrganismNot specified

UniProt Q31LJ1

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 heterocomplex Heteromer Protein × 51 PDB declaration: 51-meric（51） Consistent with protein copy count	Chain B； UniProt 1–734 Chain H； UniProt 1–734 Chain f； UniProt 1–734	Not recorded	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （Q31LJ0） Photosystem I iron-sulfur center × 3 （Q31QV2） Photosystem I reaction center subunit II × 3 （Q31PI7） Photosystem I reaction center subunit IV × 3 （Q31NL7） Photosystem I reaction center subunit III × 3 （Q31NT9） Photosystem I PsaI protein × 3 （P95823） Photosystem I reaction center subunit IX × 3 （Q31NU0） Photosystem I reaction center subunit PsaK × 3 （Q31PR9） Photosystem I reaction center subunit XI × 3 （P95822） PsaM × 3 Iron stress-induced chlorophyll-binding protein × 18 （P15347） CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 18 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.90 Å

Other States of the Same Protein in the Database

Other PDB	Difference from Current Entry 6KIG	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
6KIF Structure of cyanobacterial photosystem I-IsiA-flavodoxin supercomplex Deposited 2019-07-18	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 54 PDB declaration: 54-meric	Chain B 1–734（734 aa） Chain H 1–734（734 aa） Chain f 1–734（734 aa）	Not recorded	CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 12 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24 FMN FLAVIN MONONUCLEOTIDE × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.30 Å

1 other PDB entries and 1 assemblies. Open the comparison page and filter oligomeric states

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UniProt name	PSAB_SYNE7
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–734； UniProt 1–734 Author chain H； PDBConstruct 1–734； UniProt 1–734 Author chain f； PDBConstruct 1–734； UniProt 1–734

Photosystem I iron-sulfur center

OrganismNot specified

UniProt Q31QV2

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 heterocomplex Heteromer Protein × 51 PDB declaration: 51-meric（51） Consistent with protein copy count	Chain C； UniProt 1–81 Chain N； UniProt 1–81 Chain g； UniProt 1–81	Not recorded	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （Q31LJ0） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （Q31LJ1） Photosystem I reaction center subunit II × 3 （Q31PI7） Photosystem I reaction center subunit IV × 3 （Q31NL7） Photosystem I reaction center subunit III × 3 （Q31NT9） Photosystem I PsaI protein × 3 （P95823） Photosystem I reaction center subunit IX × 3 （Q31NU0） Photosystem I reaction center subunit PsaK × 3 （Q31PR9） Photosystem I reaction center subunit XI × 3 （P95822） PsaM × 3 Iron stress-induced chlorophyll-binding protein × 18 （P15347） CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 18 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.90 Å

Other States of the Same Protein in the Database

Other PDB	Difference from Current Entry 6KIG	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
6KIF Structure of cyanobacterial photosystem I-IsiA-flavodoxin supercomplex Deposited 2019-07-18	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 54 PDB declaration: 54-meric	Chain C 1–81（81 aa） Chain N 1–81（81 aa） Chain g 1–81（81 aa）	Not recorded	CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 12 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24 FMN FLAVIN MONONUCLEOTIDE × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.30 Å

1 other PDB entries and 1 assemblies. Open the comparison page and filter oligomeric states

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UniProt name	PSAC_SYNE7
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain C； PDBConstruct 1–81； UniProt 1–81 Author chain N； PDBConstruct 1–81； UniProt 1–81 Author chain g； PDBConstruct 1–81； UniProt 1–81

Photosystem I reaction center subunit II

OrganismNot specified

UniProt Q31PI7

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 heterocomplex Heteromer Protein × 51 PDB declaration: 51-meric（51） Consistent with protein copy count	Chain D； UniProt 2–142 Chain O； UniProt 2–142 Chain h； UniProt 2–142	Not recorded	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （Q31LJ0） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （Q31LJ1） Photosystem I iron-sulfur center × 3 （Q31QV2） Photosystem I reaction center subunit IV × 3 （Q31NL7） Photosystem I reaction center subunit III × 3 （Q31NT9） Photosystem I PsaI protein × 3 （P95823） Photosystem I reaction center subunit IX × 3 （Q31NU0） Photosystem I reaction center subunit PsaK × 3 （Q31PR9） Photosystem I reaction center subunit XI × 3 （P95822） PsaM × 3 Iron stress-induced chlorophyll-binding protein × 18 （P15347） CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 18 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.90 Å

Other States of the Same Protein in the Database

Other PDB	Difference from Current Entry 6KIG	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
6KIF Structure of cyanobacterial photosystem I-IsiA-flavodoxin supercomplex Deposited 2019-07-18	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 54 PDB declaration: 54-meric	Chain D 2–142（141 aa） Chain O 2–142（141 aa） Chain h 2–142（141 aa）	Not recorded	CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 12 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24 FMN FLAVIN MONONUCLEOTIDE × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.30 Å

1 other PDB entries and 1 assemblies. Open the comparison page and filter oligomeric states

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UniProt name	Q31PI7_SYNE7
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain D； PDBConstruct 1–141； UniProt 2–142 Author chain O； PDBConstruct 1–141； UniProt 2–142 Author chain h； PDBConstruct 1–141； UniProt 2–142

Photosystem I reaction center subunit IV

OrganismNot specified

UniProt Q31NL7

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 heterocomplex Heteromer Protein × 51 PDB declaration: 51-meric（51） Consistent with protein copy count	Chain E； UniProt 1–75 Chain Q； UniProt 1–75 Chain i； UniProt 1–75	Not recorded	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （Q31LJ0） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （Q31LJ1） Photosystem I iron-sulfur center × 3 （Q31QV2） Photosystem I reaction center subunit II × 3 （Q31PI7） Photosystem I reaction center subunit III × 3 （Q31NT9） Photosystem I PsaI protein × 3 （P95823） Photosystem I reaction center subunit IX × 3 （Q31NU0） Photosystem I reaction center subunit PsaK × 3 （Q31PR9） Photosystem I reaction center subunit XI × 3 （P95822） PsaM × 3 Iron stress-induced chlorophyll-binding protein × 18 （P15347） CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 18 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.90 Å

Other States of the Same Protein in the Database

Other PDB	Difference from Current Entry 6KIG	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
6KIF Structure of cyanobacterial photosystem I-IsiA-flavodoxin supercomplex Deposited 2019-07-18	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 54 PDB declaration: 54-meric	Chain E 1–75（75 aa） Chain Q 1–75（75 aa） Chain i 1–75（75 aa）	Not recorded	CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 12 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24 FMN FLAVIN MONONUCLEOTIDE × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.30 Å

1 other PDB entries and 1 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	PSAE_SYNE7
Isoform	—
PDB entities	5
Chains and sequence ranges	Author chain E； PDBConstruct 1–75； UniProt 1–75 Author chain Q； PDBConstruct 1–75； UniProt 1–75 Author chain i； PDBConstruct 1–75； UniProt 1–75

Photosystem I reaction center subunit III

OrganismNot specified

UniProt Q31NT9

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 heterocomplex Heteromer Protein × 51 PDB declaration: 51-meric（51） Consistent with protein copy count	Chain F； UniProt 1–159 Chain R； UniProt 1–159 Chain j； UniProt 1–159	Not recorded	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （Q31LJ0） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （Q31LJ1） Photosystem I iron-sulfur center × 3 （Q31QV2） Photosystem I reaction center subunit II × 3 （Q31PI7） Photosystem I reaction center subunit IV × 3 （Q31NL7） Photosystem I PsaI protein × 3 （P95823） Photosystem I reaction center subunit IX × 3 （Q31NU0） Photosystem I reaction center subunit PsaK × 3 （Q31PR9） Photosystem I reaction center subunit XI × 3 （P95822） PsaM × 3 Iron stress-induced chlorophyll-binding protein × 18 （P15347） CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 18 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.90 Å

Other States of the Same Protein in the Database

Other PDB	Difference from Current Entry 6KIG	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
6KIF Structure of cyanobacterial photosystem I-IsiA-flavodoxin supercomplex Deposited 2019-07-18	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 54 PDB declaration: 54-meric	Chain F 1–159（159 aa） Chain R 1–159（159 aa） Chain j 1–159（159 aa）	Not recorded	CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 12 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24 FMN FLAVIN MONONUCLEOTIDE × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.30 Å

1 other PDB entries and 1 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	Q31NT9_SYNE7
Isoform	—
PDB entities	6
Chains and sequence ranges	Author chain F； PDBConstruct 1–159； UniProt 1–159 Author chain R； PDBConstruct 1–159； UniProt 1–159 Author chain j； PDBConstruct 1–159； UniProt 1–159

Photosystem I PsaI protein

OrganismNot specified

UniProt P95823

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 heterocomplex Heteromer Protein × 51 PDB declaration: 51-meric（51） Consistent with protein copy count	Chain I； UniProt 1–38 Chain S； UniProt 1–38 Chain k； UniProt 1–38	Not recorded	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （Q31LJ0） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （Q31LJ1） Photosystem I iron-sulfur center × 3 （Q31QV2） Photosystem I reaction center subunit II × 3 （Q31PI7） Photosystem I reaction center subunit IV × 3 （Q31NL7） Photosystem I reaction center subunit III × 3 （Q31NT9） Photosystem I reaction center subunit IX × 3 （Q31NU0） Photosystem I reaction center subunit PsaK × 3 （Q31PR9） Photosystem I reaction center subunit XI × 3 （P95822） PsaM × 3 Iron stress-induced chlorophyll-binding protein × 18 （P15347） CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 18 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.90 Å

Other States of the Same Protein in the Database

Other PDB	Difference from Current Entry 6KIG	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
6KIF Structure of cyanobacterial photosystem I-IsiA-flavodoxin supercomplex Deposited 2019-07-18	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 54 PDB declaration: 54-meric	Chain I 1–38（38 aa） Chain S 1–38（38 aa） Chain k 1–38（38 aa）	Not recorded	CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 12 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24 FMN FLAVIN MONONUCLEOTIDE × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.30 Å

1 other PDB entries and 1 assemblies. Open the comparison page and filter oligomeric states

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UniProt name	P95823_SYNE7
Isoform	—
PDB entities	7
Chains and sequence ranges	Author chain I； PDBConstruct 1–38； UniProt 1–38 Author chain S； PDBConstruct 1–38； UniProt 1–38 Author chain k； PDBConstruct 1–38； UniProt 1–38

Photosystem I reaction center subunit IX

OrganismNot specified

UniProt Q31NU0

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 heterocomplex Heteromer Protein × 51 PDB declaration: 51-meric（51） Consistent with protein copy count	Chain J； UniProt 1–41 Chain T； UniProt 1–41 Chain l； UniProt 1–41	Not recorded	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （Q31LJ0） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （Q31LJ1） Photosystem I iron-sulfur center × 3 （Q31QV2） Photosystem I reaction center subunit II × 3 （Q31PI7） Photosystem I reaction center subunit IV × 3 （Q31NL7） Photosystem I reaction center subunit III × 3 （Q31NT9） Photosystem I PsaI protein × 3 （P95823） Photosystem I reaction center subunit PsaK × 3 （Q31PR9） Photosystem I reaction center subunit XI × 3 （P95822） PsaM × 3 Iron stress-induced chlorophyll-binding protein × 18 （P15347） CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 18 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.90 Å

Other States of the Same Protein in the Database

Other PDB	Difference from Current Entry 6KIG	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
6KIF Structure of cyanobacterial photosystem I-IsiA-flavodoxin supercomplex Deposited 2019-07-18	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 54 PDB declaration: 54-meric	Chain J 1–41（41 aa） Chain T 1–41（41 aa） Chain l 1–41（41 aa）	Not recorded	CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 12 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24 FMN FLAVIN MONONUCLEOTIDE × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.30 Å

1 other PDB entries and 1 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	PSAJ_SYNE7
Isoform	—
PDB entities	8
Chains and sequence ranges	Author chain J； PDBConstruct 1–41； UniProt 1–41 Author chain T； PDBConstruct 1–41； UniProt 1–41 Author chain l； PDBConstruct 1–41； UniProt 1–41

Photosystem I reaction center subunit PsaK

OrganismNot specified

UniProt Q31PR9

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 heterocomplex Heteromer Protein × 51 PDB declaration: 51-meric（51） Consistent with protein copy count	Chain K； UniProt 1–84 Chain U； UniProt 1–84 Chain m； UniProt 1–84	Not recorded	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （Q31LJ0） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （Q31LJ1） Photosystem I iron-sulfur center × 3 （Q31QV2） Photosystem I reaction center subunit II × 3 （Q31PI7） Photosystem I reaction center subunit IV × 3 （Q31NL7） Photosystem I reaction center subunit III × 3 （Q31NT9） Photosystem I PsaI protein × 3 （P95823） Photosystem I reaction center subunit IX × 3 （Q31NU0） Photosystem I reaction center subunit XI × 3 （P95822） PsaM × 3 Iron stress-induced chlorophyll-binding protein × 18 （P15347） CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 18 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.90 Å

Other States of the Same Protein in the Database

Other PDB	Difference from Current Entry 6KIG	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
6KIF Structure of cyanobacterial photosystem I-IsiA-flavodoxin supercomplex Deposited 2019-07-18	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 54 PDB declaration: 54-meric	Chain K 1–84（84 aa） Chain U 1–84（84 aa） Chain m 1–84（84 aa）	Not recorded	CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 12 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24 FMN FLAVIN MONONUCLEOTIDE × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.30 Å

1 other PDB entries and 1 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	Q31PR9_SYNE7
Isoform	—
PDB entities	9
Chains and sequence ranges	Author chain K； PDBConstruct 1–84； UniProt 1–84 Author chain U； PDBConstruct 1–84； UniProt 1–84 Author chain m； PDBConstruct 1–84； UniProt 1–84

Photosystem I reaction center subunit XI

OrganismNot specified

UniProt P95822

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 heterocomplex Heteromer Protein × 51 PDB declaration: 51-meric（51） Consistent with protein copy count	Chain L； UniProt 1–166 Chain V； UniProt 1–166 Chain n； UniProt 1–166	Not recorded	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （Q31LJ0） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （Q31LJ1） Photosystem I iron-sulfur center × 3 （Q31QV2） Photosystem I reaction center subunit II × 3 （Q31PI7） Photosystem I reaction center subunit IV × 3 （Q31NL7） Photosystem I reaction center subunit III × 3 （Q31NT9） Photosystem I PsaI protein × 3 （P95823） Photosystem I reaction center subunit IX × 3 （Q31NU0） Photosystem I reaction center subunit PsaK × 3 （Q31PR9） PsaM × 3 Iron stress-induced chlorophyll-binding protein × 18 （P15347） CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 18 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.90 Å

Other States of the Same Protein in the Database

Other PDB	Difference from Current Entry 6KIG	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
6KIF Structure of cyanobacterial photosystem I-IsiA-flavodoxin supercomplex Deposited 2019-07-18	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 54 PDB declaration: 54-meric	Chain L 1–166（166 aa） Chain V 1–166（166 aa） Chain n 1–166（166 aa）	Not recorded	CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 12 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24 FMN FLAVIN MONONUCLEOTIDE × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.30 Å

1 other PDB entries and 1 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	PSAL_SYNE7
Isoform	—
PDB entities	10
Chains and sequence ranges	Author chain L； PDBConstruct 1–166； UniProt 1–166 Author chain V； PDBConstruct 1–166； UniProt 1–166 Author chain n； PDBConstruct 1–166； UniProt 1–166

Iron stress-induced chlorophyll-binding protein

OrganismNot specified

UniProt P15347

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 heterocomplex Heteromer Protein × 51 PDB declaration: 51-meric（51） Consistent with protein copy count	Chain 1； UniProt 1–342 Chain 2； UniProt 1–342 Chain 3； UniProt 1–342 Chain 4； UniProt 1–342 Chain 5； UniProt 1–342 Chain 6； UniProt 1–342 Chain Y； UniProt 1–342 Chain Z； UniProt 1–342 Chain a； UniProt 1–342 Chain b； UniProt 1–342 Chain c； UniProt 1–342 Chain d； UniProt 1–342 Chain q； UniProt 1–342 Chain r； UniProt 1–342 Chain s； UniProt 1–342 Chain t； UniProt 1–342 Chain u； UniProt 1–342 Chain v； UniProt 1–342	Not recorded	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （Q31LJ0） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （Q31LJ1） Photosystem I iron-sulfur center × 3 （Q31QV2） Photosystem I reaction center subunit II × 3 （Q31PI7） Photosystem I reaction center subunit IV × 3 （Q31NL7） Photosystem I reaction center subunit III × 3 （Q31NT9） Photosystem I PsaI protein × 3 （P95823） Photosystem I reaction center subunit IX × 3 （Q31NU0） Photosystem I reaction center subunit PsaK × 3 （Q31PR9） Photosystem I reaction center subunit XI × 3 （P95822） PsaM × 3 CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 18 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.90 Å

Other States of the Same Protein in the Database

Other PDB	Difference from Current Entry 6KIG	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
6KIF Structure of cyanobacterial photosystem I-IsiA-flavodoxin supercomplex Deposited 2019-07-18	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 54 PDB declaration: 54-meric	Chain 1 1–342（342 aa） Chain 2 1–342（342 aa） Chain 3 1–342（342 aa） Chain 4 1–342（342 aa） Chain 5 1–342（342 aa） Chain 6 1–342（342 aa） Chain Y 1–342（342 aa） Chain Z 1–342（342 aa） Chain a 1–342（342 aa） Chain b 1–342（342 aa） Chain c 1–342（342 aa） Chain d 1–342（342 aa） Chain q 1–342（342 aa） Chain r 1–342（342 aa） Chain s 1–342（342 aa） Chain t 1–342（342 aa） Chain u 1–342（342 aa） Chain v 1–342（342 aa）	Not recorded	CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 12 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24 FMN FLAVIN MONONUCLEOTIDE × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.30 Å

1 other PDB entries and 1 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	ISIA_SYNE7
Isoform	—
PDB entities	12
Chains and sequence ranges	Author chain 1； PDBConstruct 1–342； UniProt 1–342 Author chain 2； PDBConstruct 1–342； UniProt 1–342 Author chain 3； PDBConstruct 1–342； UniProt 1–342 Author chain 4； PDBConstruct 1–342； UniProt 1–342 Author chain 5； PDBConstruct 1–342； UniProt 1–342 Author chain 6； PDBConstruct 1–342； UniProt 1–342 Author chain Y； PDBConstruct 1–342； UniProt 1–342 Author chain Z； PDBConstruct 1–342； UniProt 1–342 Author chain a； PDBConstruct 1–342； UniProt 1–342 Author chain b； PDBConstruct 1–342； UniProt 1–342 Author chain c； PDBConstruct 1–342； UniProt 1–342 Author chain d； PDBConstruct 1–342； UniProt 1–342 Author chain q； PDBConstruct 1–342； UniProt 1–342 Author chain r； PDBConstruct 1–342； UniProt 1–342 Author chain s； PDBConstruct 1–342； UniProt 1–342 Author chain t； PDBConstruct 1–342； UniProt 1–342 Author chain u； PDBConstruct 1–342； UniProt 1–342 Author chain v； PDBConstruct 1–342； UniProt 1–342

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

P(r) Distance Distribution P(r) Distribution

Download Download SAXS (.dat) P(r) (.pr.out) CIF

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	6kig
Deposition date deposition_date	2019-07-18
Structure title title	Structure of cyanobacterial photosystem I-IsiA supercomplex
Keywords keywords	Photosystem, Antenna, Chlorophyll-binding protein, Membrane protein, Photosynthesis, iron stress-induced protein A; PHOTOSYNTHESIS
Experimental Method method	ELECTRON MICROSCOPY

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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier	97.23 Å
Radius of gyration Rg (electron density) rg_electron	96.85 Å
Forward intensity I(0) i0	31221500000.00
Molecular weight molecular_weight	2001600.0 kDa
Excluded volume excluded_volume	2682500 Å³
Envelope volume envelope_volume	3419200 Å³
Hydration-shell volume shell_volume	279630 Å³
Envelope diameter envelope_diameter	293.8 Å
Shell Rg shell_rg	92.57 Å
Envelope Rg envelope_rg	97.10 Å
Shape Rg shape_rg	96.93 Å
Total Rg total_rg	96.43 Å
Total atoms total_atoms	142968
Residues n_residues	12888
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	257.6 Å
Rg (real space) rg_real	94.63 Å
Rg uncertainty (real space) rg_real_error	0.65 Å
I(0) (real space) i0_real	2.9960e+10
I(0) uncertainty (real space) i0_real_error	5.5080e+08
Rg (reciprocal space) rg_reciprocal	96.51 Å
I(0) (reciprocal space) i0_reciprocal	31140000000.0000
Solution quality estimate total_estimate	0.9108
Solution quality rating solution_quality	EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks	1
Primary peak position r_peak_primary	96.6 Å
Skewness Skewness skewness	0.208
Kurtosis Kurtosis kurtosis	-0.693
Angular range angular_range	— – 0.0800 Å⁻¹
Current regularization parameter α current_alpha	1.1520
Highest regularization parameter α highest_alpha	3083000000.0000
Real-space data points n_real_points	17
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 1.000; Stabil: 0.949; Sysdev: 1.000; Positv: 1.000; Valcen: 0.997; Smooth: 0.000

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (21)

Entity 1 Entity 1 polymer

Description description	Photosystem I P700 chlorophyll a apoprotein A1
Molecular weight formula_weight	83994.3 kDa
EC 编号 ec_number	1.97.1.12
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,G,e
Atom count atom_count	143022

MTISPPEREAKVKATVDKNPVPTSFEKWGKPGHFDRTLAKGPKTTTWIWNLHANAHDFDSHTSDLEDISRKIFSAHFGHLAVIFIWLSGAYFHGARFSNFSGWLADPTHVKPSAQVVWPIFGQEILNGDVGGGFHGIQITSGLFQLWRASGYTNEFQLYVTAIGALVMAGLMLFAGWFHYHKAAPKLEWFQNVESMLNHHLAGLLGLGSLSWAGHQIHVSLPVNKLLDAIDAGEPLVLNGKTIASAADIPLPHEFLDVSLISQLFPGFEAGVKAFFTLNWSAYADFLTFKGGLNPVTGGLWLTDTAHHHLAIAVLFIVAGHMYRTNWGIGHSLKEILEAHKGPFTGQGHKGLYEILTTSWHAQLSINLAILGSISIIVAHHMYAMPPYPYLATDYPTMLSLFTHHIWIGGFLIVGAGAHAAIFMVRDYDPAKNVDNLLDRVLRHRDAIISHLNWVCIWLGFHSFGLYIHNDTMRALGRPQDMFSDSAIQLQPIFAQWIQNIHALAPGNTAPNALASVSQVFGGDVVAVGGKVAAAPIVLGTADFMVHHIHAFTIHVTALILLKGVLYARSSRLVPDKANLGFRFPCDGPGRGGTCQVSGWDHVFLGLFWMYNSLSIVIFHYSWKMQSDVWGSVLPDGSVAHIANGNFAQSALTINGWLRDFLWAQASQVITSYGSSTSAYGLLFLGAHFVWAFSLMFLFSGRGYWQELIESIVWAHNKLKVAPAIQPRALSIIQGRAVGVAHYLLGGIVTTWSFFLARIIAVG

Entity 2 Entity 2 polymer

Description description	Photosystem I P700 chlorophyll a apoprotein A2
Molecular weight formula_weight	81554.7 kDa
EC 编号 ec_number	1.97.1.12
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,H,f

MATKFPKFSQDLAQDPTTRRIWYGIATAHDFESHDGMTEENLYQKIFASHFGHLAIIFLWVSGNLFHVAWQGNFEQWSQDPLHVRPIAHAIWDPHFGQGAIDAFTQAGASSPVNVAYSGVYHWWYTIGMRTNGDLYQGSIFLLILSALFLFAGWLHLQPKFRPSLSWFKNAESRLNHHLAGLFGFSSLAWTGHLVHVAIPEARGQHVGWDNFLSTLPHPAGLAPFFTGNWSVYAENPDTASHAFGTAEGAGTAILTFLGGFHPQTEALWLTDIAHHHLAIAVIFIIAGHMYRTNFGIGHSIKEILEAHKPPAGGLGAGHKGLYETLNNSLHFQLALALASLGVVTSLVAQHMYSMPPYAFIAKDYTTMAALYTHHQYIATFIMCGAFAHGAIFLIRDYDPEANKNNVLARVLEHKEAIISHLSWVSLFLGFHTLGLYVHNDVVVAFGTPEKQILIEPVFAQFVQAASGKALYGFNVLLANADSAATAASLGTYLPNWLDAINSGKTALFLPIGPGDFLVHHAIALGLHTTTLILVKGALDARGSKLMPDKKDFGYSFPCDGPGRGGTCDISAWDAFYLAVFWALNTVGWVTFYWHWKNLTVWQGNVAQFNESSTYLMGWLRDYLWLNSSQLINGYNPFGTNNLSVWSWMFLFGHLIWATGFMFLISWRGYWQELIETIVWAHQRTPLANIVGWKDKPVALSIVQARVVGLAHFTVGYFLTYAAFLIASTAGKFG

Entity 3 Entity 3 polymer

Description description	Photosystem I iron-sulfur center
Molecular weight formula_weight	8807.2 kDa
EC 编号 ec_number	1.97.1.12
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C,N,g

MSHSVKIYDTCIGCTQCVRACPLDVLEMVPWDGCKAGQIAASPRTEDCVGCKRCETACPTDFLSIRVYLGAETTRSMGLAY

Entity 4 Entity 4 polymer

Description description	Photosystem I reaction center subunit II
Molecular weight formula_weight	15536.6 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D,O,h

AETLTGKTPVFGGSTGGLLKSAETEEKYAITWTSTKEQVFELPTGGAAVMHEGDNLLYFARKEQALALGTQLRTKFKPKIESYKIYRVFPGGDVEYLHPKDGVFPEKVNEGRSFAGKVDRRIGQNPNPATIKFTGKQPYTA

Entity 5 Entity 5 polymer

Description description	Photosystem I reaction center subunit IV
Molecular weight formula_weight	8147.1 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E,Q,i

MAIARGDKVRILRPESYWFNEVGTVASVDQSGIKYPVVVRFEKVNYNGFSGSDGGVNTNNFAEAELQVVAAAAKK

Entity 6 Entity 6 polymer

Description description	Photosystem I reaction center subunit III
Molecular weight formula_weight	17125.7 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	F,R,j

MRRLFAVVLAACLWLGFAPQASADVAGLTPCSESPRFIQRAEAAATPQAKARFENYSQALCGADGLPHLIVDGRLDHAGDFIIPSLLFLYIAGWIGWVGRSYLQAIKSDKDAAGKEIVIDVPLAVKFSLTGFAWPLAAFQEFSSGKLLAKADEITVSPR

Entity 7 Entity 7 polymer

Description description	Photosystem I PsaI protein
Molecular weight formula_weight	4002.7 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	I,S,k

MSGDFAAAFLPTIFVPLVGLGLPAVLMSLLFTYIESEA

Entity 8 Entity 8 polymer

Description description	Photosystem I reaction center subunit IX
Molecular weight formula_weight	4713.6 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	J,T,l

MDGLKRYLSSAPILATIWFAITAGILIEFNRFFPDLLFHPL

Entity 9 Entity 9 polymer

Description description	Photosystem I reaction center subunit PsaK
Molecular weight formula_weight	8397.1 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	K,U,m

MLPVLAAIPQTVAWSPKVALVMILSNIVAIAIGKATIKIQNAGPALPSPQLFGGFGLPAVLATASFGHILGIGVILGLANIGNL

Entity 10 Entity 10 polymer

Description description	Photosystem I reaction center subunit XI
Molecular weight formula_weight	17302.7 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	L,V,n

MAQDVIANGGTPEIGNLATPINSSPFTRTFINALPIYRRGLSSNRRGLEIGMAHGFLLYGPFSILGPLRNTETAGSAGLLATVGLVVILTVCLSLYGNAGSGPSAAESTVTTPNPPQELFTKEGWSEFTSGFILGGLGGAFFAFYLASTPYVQPLVKIAAGVWSVH

Entity 11 Entity 11 polymer

Description description	PsaM
Molecular weight formula_weight	3239.9 kDa
EC 编号 ec_number	1.97.1.12
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	M,W,o

MTDTQVFVALLLALVPAVLAYRLGTELYR

Entity 12 Entity 12 polymer

Description description	Iron stress-induced chlorophyll-binding protein
Molecular weight formula_weight	37004.5 kDa
Source method src_method	nat
Copy count entity_count	18

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	1,2,3,4,5,6,Y,Z,a,b,c,d,q,r,s,t,u,v

MQTYNNPEVTYDWWAGNARFANLSGLFIAAHVAQAALIMFWAGAFTLYEISWLTADQSMGEQGLILLPHLATLGLGVGDGGQVTDTYPLFVVGAVHLIASAVLGAGALFHTFRAPSDLAAASGAAKRFHFDWNDPKQLGLILGHHLLFLGVGALLLVAKATTWGGLYDAASQTVRLVTEPTLNPAVIYGYQTHFASIDNLEDLVGGHVYVGVMLIAGGIWHILVPPFQWTKKVLIYSGEAILSYSLGGIALAGFVAAYFCAVNTLAYPVEFYGAPLEIKLGVTPYFADTVQLPFGAHTPRAWLSNAHFFLAFFCLQGHLWHALRAMGFDFRRVEKALSSVEA

Entity 13 Entity 13 non-polymer

Description description	CHLOROPHYLL A
Molecular weight formula_weight	893.5 kDa
Source method src_method	syn
Copy count entity_count	594

Entity 14 Entity 14 non-polymer

Description description	PHYLLOQUINONE
Molecular weight formula_weight	450.7 kDa
Source method src_method	syn
Copy count entity_count	6

Entity 15 Entity 15 non-polymer

Description description	IRON/SULFUR CLUSTER
Molecular weight formula_weight	351.6 kDa
Source method src_method	syn
Copy count entity_count	9

Entity 16 Entity 16 non-polymer

Description description	BETA-CAROTENE
Molecular weight formula_weight	536.9 kDa
Source method src_method	syn
Copy count entity_count	144

Entity 17 Entity 17 non-polymer

Description description	1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE
Molecular weight formula_weight	723.0 kDa
Source method src_method	syn
Copy count entity_count	45

Entity 18 Entity 18 non-polymer

Description description	DODECYL-ALPHA-D-MALTOSIDE
Molecular weight formula_weight	510.6 kDa
Source method src_method	syn
Copy count entity_count	18

Entity 19 Entity 19 non-polymer

Description description	1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE
Molecular weight formula_weight	787.2 kDa
Source method src_method	syn
Copy count entity_count	6

Entity 20 Entity 20 non-polymer

Description description	1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL
Molecular weight formula_weight	795.1 kDa
Source method src_method	syn
Copy count entity_count	24

Entity 21 Entity 21 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	54

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8. Citations (1)

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Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	—

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	—

Resolution resolution	2.90 Å
Resolution测定方法 resolution_method	—
颗粒数 num_particles	63332

fit	/app/data/saxs_computation/ki/6kig/6kig.fit
pddf	/app/data/pr_computation/ki/6kig/6kig.pr.out
profile	/app/data/saxs_computation/ki/6kig/6kig.dat

Structure of cyanobacterial photosystem I-IsiA supercomplex

1. Protein Identity and Related Structures Protein Identity & Related Structures

Photosystem I P700 chlorophyll a apoprotein A1

State in the Current Structure

Other States of the Same Protein in the Database

Photosystem I P700 chlorophyll a apoprotein A2

State in the Current Structure

Other States of the Same Protein in the Database

Photosystem I iron-sulfur center

State in the Current Structure

Other States of the Same Protein in the Database

Photosystem I reaction center subunit II

State in the Current Structure

Other States of the Same Protein in the Database

Photosystem I reaction center subunit IV

State in the Current Structure

Other States of the Same Protein in the Database

Photosystem I reaction center subunit III

State in the Current Structure

Other States of the Same Protein in the Database

Photosystem I PsaI protein

State in the Current Structure

Other States of the Same Protein in the Database

Photosystem I reaction center subunit IX

State in the Current Structure

Other States of the Same Protein in the Database

Photosystem I reaction center subunit PsaK

State in the Current Structure

Other States of the Same Protein in the Database

Photosystem I reaction center subunit XI

State in the Current Structure

Other States of the Same Protein in the Database

Iron stress-induced chlorophyll-binding protein

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

5. Crystallography and Experiment 5. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

6. Entities and Polymers Entities & Polymers (21)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Entity 4 Entity 4 polymer

Polymer Polymer

Entity 5 Entity 5 polymer

Polymer Polymer

Entity 6 Entity 6 polymer

Polymer Polymer

Entity 7 Entity 7 polymer

Polymer Polymer

Entity 8 Entity 8 polymer

Polymer Polymer

Entity 9 Entity 9 polymer

Polymer Polymer

Entity 10 Entity 10 polymer

Polymer Polymer

Entity 11 Entity 11 polymer

Polymer Polymer

Entity 12 Entity 12 polymer

Polymer Polymer

Entity 13 Entity 13 non-polymer

Entity 14 Entity 14 non-polymer

Entity 15 Entity 15 non-polymer

Entity 16 Entity 16 non-polymer

Entity 17 Entity 17 non-polymer

Entity 18 Entity 18 non-polymer

Entity 19 Entity 19 non-polymer

Entity 20 Entity 20 non-polymer

Entity 21 Entity 21 water

8. Citations (1)

9. Files and Curves (10)