9lzj

The PSI3-IsiA43 complex with a closed double ring of IsiA proteins bound to a trimeric PSI core

Method: ELECTRON MICROSCOPY

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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	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 79	Photosystem I P700 chlorophyll a apoprotein A2 × 3 （P0A407） Photosystem I iron-sulfur center × 3 （P0A415） Photosystem I reaction center subunit II × 3 （P0A420） Photosystem I reaction center subunit IV × 3 （P0A423） Photosystem I reaction center subunit III × 3 （P0A401） Photosystem I reaction center subunit VIII × 3 （P0A427） Photosystem I reaction center subunit IX × 3 （P0A429） Photosystem I reaction center subunit PsaK × 3 （P0A425） Photosystem I reaction center subunit XI × 3 （Q8DGB4） Photosystem I reaction center subunit XII × 3 （P0A403） Photosystem I 4.8K protein × 3 （Q8DKP6） Iron stress-induced chlorophyll-binding protein × 43 （Q8DK20） CHLOROPHYLL A × 1016 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 238 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 18 DODECYL-ALPHA-D-MALTOSIDE × 12 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 40 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAA_THEVB
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain aA； PDBConstruct 1–755； UniProt 1–755 Author chain bA； PDBConstruct 1–755； UniProt 1–755 Author chain cA； PDBConstruct 1–755； UniProt 1–755

Photosystem I P700 chlorophyll a apoprotein A2

OrganismNot specified

UniProt P0A407

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 79	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P0A405） Photosystem I iron-sulfur center × 3 （P0A415） Photosystem I reaction center subunit II × 3 （P0A420） Photosystem I reaction center subunit IV × 3 （P0A423） Photosystem I reaction center subunit III × 3 （P0A401） Photosystem I reaction center subunit VIII × 3 （P0A427） Photosystem I reaction center subunit IX × 3 （P0A429） Photosystem I reaction center subunit PsaK × 3 （P0A425） Photosystem I reaction center subunit XI × 3 （Q8DGB4） Photosystem I reaction center subunit XII × 3 （P0A403） Photosystem I 4.8K protein × 3 （Q8DKP6） Iron stress-induced chlorophyll-binding protein × 43 （Q8DK20） CHLOROPHYLL A × 1016 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 238 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 18 DODECYL-ALPHA-D-MALTOSIDE × 12 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 40 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAB_THEVB
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain aB； PDBConstruct 1–741； UniProt 1–741 Author chain bB； PDBConstruct 1–741； UniProt 1–741 Author chain cB； PDBConstruct 1–741； UniProt 1–741

Photosystem I iron-sulfur center

OrganismNot specified

UniProt P0A415

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 79	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P0A405） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （P0A407） Photosystem I reaction center subunit II × 3 （P0A420） Photosystem I reaction center subunit IV × 3 （P0A423） Photosystem I reaction center subunit III × 3 （P0A401） Photosystem I reaction center subunit VIII × 3 （P0A427） Photosystem I reaction center subunit IX × 3 （P0A429） Photosystem I reaction center subunit PsaK × 3 （P0A425） Photosystem I reaction center subunit XI × 3 （Q8DGB4） Photosystem I reaction center subunit XII × 3 （P0A403） Photosystem I 4.8K protein × 3 （Q8DKP6） Iron stress-induced chlorophyll-binding protein × 43 （Q8DK20） CHLOROPHYLL A × 1016 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 238 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 18 DODECYL-ALPHA-D-MALTOSIDE × 12 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 40 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAC_THEVB
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain aC； PDBConstruct 1–81； UniProt 1–81 Author chain bC； PDBConstruct 1–81； UniProt 1–81 Author chain cC； PDBConstruct 1–81； UniProt 1–81

Photosystem I reaction center subunit II

OrganismNot specified

UniProt P0A420

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 79	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P0A405） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （P0A407） Photosystem I iron-sulfur center × 3 （P0A415） Photosystem I reaction center subunit IV × 3 （P0A423） Photosystem I reaction center subunit III × 3 （P0A401） Photosystem I reaction center subunit VIII × 3 （P0A427） Photosystem I reaction center subunit IX × 3 （P0A429） Photosystem I reaction center subunit PsaK × 3 （P0A425） Photosystem I reaction center subunit XI × 3 （Q8DGB4） Photosystem I reaction center subunit XII × 3 （P0A403） Photosystem I 4.8K protein × 3 （Q8DKP6） Iron stress-induced chlorophyll-binding protein × 43 （Q8DK20） CHLOROPHYLL A × 1016 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 238 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 18 DODECYL-ALPHA-D-MALTOSIDE × 12 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 40 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAD_THEVB
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain aD； PDBConstruct 1–139； UniProt 1–139 Author chain bD； PDBConstruct 1–139； UniProt 1–139 Author chain cD； PDBConstruct 1–139； UniProt 1–139

Photosystem I reaction center subunit IV

OrganismNot specified

UniProt P0A423

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 79	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P0A405） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （P0A407） Photosystem I iron-sulfur center × 3 （P0A415） Photosystem I reaction center subunit II × 3 （P0A420） Photosystem I reaction center subunit III × 3 （P0A401） Photosystem I reaction center subunit VIII × 3 （P0A427） Photosystem I reaction center subunit IX × 3 （P0A429） Photosystem I reaction center subunit PsaK × 3 （P0A425） Photosystem I reaction center subunit XI × 3 （Q8DGB4） Photosystem I reaction center subunit XII × 3 （P0A403） Photosystem I 4.8K protein × 3 （Q8DKP6） Iron stress-induced chlorophyll-binding protein × 43 （Q8DK20） CHLOROPHYLL A × 1016 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 238 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 18 DODECYL-ALPHA-D-MALTOSIDE × 12 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 40 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAE_THEVB
Isoform	—
PDB entities	5
Chains and sequence ranges	Author chain aE； PDBConstruct 1–76； UniProt 1–76 Author chain bE； PDBConstruct 1–76； UniProt 1–76 Author chain cE； PDBConstruct 1–76； UniProt 1–76

Photosystem I reaction center subunit III

OrganismNot specified

UniProt P0A401

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 79	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P0A405） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （P0A407） Photosystem I iron-sulfur center × 3 （P0A415） Photosystem I reaction center subunit II × 3 （P0A420） Photosystem I reaction center subunit IV × 3 （P0A423） Photosystem I reaction center subunit VIII × 3 （P0A427） Photosystem I reaction center subunit IX × 3 （P0A429） Photosystem I reaction center subunit PsaK × 3 （P0A425） Photosystem I reaction center subunit XI × 3 （Q8DGB4） Photosystem I reaction center subunit XII × 3 （P0A403） Photosystem I 4.8K protein × 3 （Q8DKP6） Iron stress-induced chlorophyll-binding protein × 43 （Q8DK20） CHLOROPHYLL A × 1016 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 238 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 18 DODECYL-ALPHA-D-MALTOSIDE × 12 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 40 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAF_THEVB
Isoform	—
PDB entities	6
Chains and sequence ranges	Author chain aF； PDBConstruct 1–164； UniProt 1–164 Author chain bF； PDBConstruct 1–164； UniProt 1–164 Author chain cF； PDBConstruct 1–164； UniProt 1–164

Photosystem I reaction center subunit VIII

OrganismNot specified

UniProt P0A427

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 79	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P0A405） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （P0A407） Photosystem I iron-sulfur center × 3 （P0A415） Photosystem I reaction center subunit II × 3 （P0A420） Photosystem I reaction center subunit IV × 3 （P0A423） Photosystem I reaction center subunit III × 3 （P0A401） Photosystem I reaction center subunit IX × 3 （P0A429） Photosystem I reaction center subunit PsaK × 3 （P0A425） Photosystem I reaction center subunit XI × 3 （Q8DGB4） Photosystem I reaction center subunit XII × 3 （P0A403） Photosystem I 4.8K protein × 3 （Q8DKP6） Iron stress-induced chlorophyll-binding protein × 43 （Q8DK20） CHLOROPHYLL A × 1016 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 238 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 18 DODECYL-ALPHA-D-MALTOSIDE × 12 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 40 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAI_THEVB
Isoform	—
PDB entities	7
Chains and sequence ranges	Author chain aI； PDBConstruct 1–38； UniProt 1–38 Author chain bI； PDBConstruct 1–38； UniProt 1–38 Author chain cI； PDBConstruct 1–38； UniProt 1–38

Photosystem I reaction center subunit IX

OrganismNot specified

UniProt P0A429

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 79	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P0A405） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （P0A407） Photosystem I iron-sulfur center × 3 （P0A415） Photosystem I reaction center subunit II × 3 （P0A420） Photosystem I reaction center subunit IV × 3 （P0A423） Photosystem I reaction center subunit III × 3 （P0A401） Photosystem I reaction center subunit VIII × 3 （P0A427） Photosystem I reaction center subunit PsaK × 3 （P0A425） Photosystem I reaction center subunit XI × 3 （Q8DGB4） Photosystem I reaction center subunit XII × 3 （P0A403） Photosystem I 4.8K protein × 3 （Q8DKP6） Iron stress-induced chlorophyll-binding protein × 43 （Q8DK20） CHLOROPHYLL A × 1016 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 238 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 18 DODECYL-ALPHA-D-MALTOSIDE × 12 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 40 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAJ_THEVB
Isoform	—
PDB entities	8
Chains and sequence ranges	Author chain aJ； PDBConstruct 1–41； UniProt 1–41 Author chain bJ； PDBConstruct 1–41； UniProt 1–41 Author chain cJ； PDBConstruct 1–41； UniProt 1–41

Photosystem I reaction center subunit PsaK

OrganismNot specified

UniProt P0A425

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 79	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P0A405） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （P0A407） Photosystem I iron-sulfur center × 3 （P0A415） Photosystem I reaction center subunit II × 3 （P0A420） Photosystem I reaction center subunit IV × 3 （P0A423） Photosystem I reaction center subunit III × 3 （P0A401） Photosystem I reaction center subunit VIII × 3 （P0A427） Photosystem I reaction center subunit IX × 3 （P0A429） Photosystem I reaction center subunit XI × 3 （Q8DGB4） Photosystem I reaction center subunit XII × 3 （P0A403） Photosystem I 4.8K protein × 3 （Q8DKP6） Iron stress-induced chlorophyll-binding protein × 43 （Q8DK20） CHLOROPHYLL A × 1016 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 238 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 18 DODECYL-ALPHA-D-MALTOSIDE × 12 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 40 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAK_THEVB
Isoform	—
PDB entities	9
Chains and sequence ranges	Author chain aK； PDBConstruct 1–83； UniProt 1–83 Author chain bK； PDBConstruct 1–83； UniProt 1–83 Author chain cK； PDBConstruct 1–83； UniProt 1–83

Photosystem I reaction center subunit XI

OrganismNot specified

UniProt Q8DGB4

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 79	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P0A405） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （P0A407） Photosystem I iron-sulfur center × 3 （P0A415） Photosystem I reaction center subunit II × 3 （P0A420） Photosystem I reaction center subunit IV × 3 （P0A423） Photosystem I reaction center subunit III × 3 （P0A401） Photosystem I reaction center subunit VIII × 3 （P0A427） Photosystem I reaction center subunit IX × 3 （P0A429） Photosystem I reaction center subunit PsaK × 3 （P0A425） Photosystem I reaction center subunit XII × 3 （P0A403） Photosystem I 4.8K protein × 3 （Q8DKP6） Iron stress-induced chlorophyll-binding protein × 43 （Q8DK20） CHLOROPHYLL A × 1016 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 238 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 18 DODECYL-ALPHA-D-MALTOSIDE × 12 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 40 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAL_THEVB
Isoform	—
PDB entities	10
Chains and sequence ranges	Author chain aL； PDBConstruct 1–155； UniProt 1–155 Author chain bL； PDBConstruct 1–155； UniProt 1–155 Author chain cL； PDBConstruct 1–155； UniProt 1–155

Photosystem I reaction center subunit XII

OrganismNot specified

UniProt P0A403

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 79	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P0A405） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （P0A407） Photosystem I iron-sulfur center × 3 （P0A415） Photosystem I reaction center subunit II × 3 （P0A420） Photosystem I reaction center subunit IV × 3 （P0A423） Photosystem I reaction center subunit III × 3 （P0A401） Photosystem I reaction center subunit VIII × 3 （P0A427） Photosystem I reaction center subunit IX × 3 （P0A429） Photosystem I reaction center subunit PsaK × 3 （P0A425） Photosystem I reaction center subunit XI × 3 （Q8DGB4） Photosystem I 4.8K protein × 3 （Q8DKP6） Iron stress-induced chlorophyll-binding protein × 43 （Q8DK20） CHLOROPHYLL A × 1016 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 238 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 18 DODECYL-ALPHA-D-MALTOSIDE × 12 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 40 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAM_THEVB
Isoform	—
PDB entities	11
Chains and sequence ranges	Author chain aM； PDBConstruct 1–31； UniProt 1–31 Author chain bM； PDBConstruct 1–31； UniProt 1–31 Author chain cM； PDBConstruct 1–31； UniProt 1–31

Photosystem I 4.8K protein

OrganismNot specified

UniProt Q8DKP6

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 79	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P0A405） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （P0A407） Photosystem I iron-sulfur center × 3 （P0A415） Photosystem I reaction center subunit II × 3 （P0A420） Photosystem I reaction center subunit IV × 3 （P0A423） Photosystem I reaction center subunit III × 3 （P0A401） Photosystem I reaction center subunit VIII × 3 （P0A427） Photosystem I reaction center subunit IX × 3 （P0A429） Photosystem I reaction center subunit PsaK × 3 （P0A425） Photosystem I reaction center subunit XI × 3 （Q8DGB4） Photosystem I reaction center subunit XII × 3 （P0A403） Iron stress-induced chlorophyll-binding protein × 43 （Q8DK20） CHLOROPHYLL A × 1016 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 238 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 18 DODECYL-ALPHA-D-MALTOSIDE × 12 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 40 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8DKP6_THEVB
Isoform	—
PDB entities	12
Chains and sequence ranges	Author chain aX； PDBConstruct 1–39； UniProt 1–39 Author chain bX； PDBConstruct 1–39； UniProt 1–39 Author chain cX； PDBConstruct 1–39； UniProt 1–39

Iron stress-induced chlorophyll-binding protein

OrganismNot specified

UniProt Q8DK20

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 79	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P0A405） Photosystem I P700 chlorophyll a apoprotein A2 × 3 （P0A407） Photosystem I iron-sulfur center × 3 （P0A415） Photosystem I reaction center subunit II × 3 （P0A420） Photosystem I reaction center subunit IV × 3 （P0A423） Photosystem I reaction center subunit III × 3 （P0A401） Photosystem I reaction center subunit VIII × 3 （P0A427） Photosystem I reaction center subunit IX × 3 （P0A429） Photosystem I reaction center subunit PsaK × 3 （P0A425） Photosystem I reaction center subunit XI × 3 （Q8DGB4） Photosystem I reaction center subunit XII × 3 （P0A403） Photosystem I 4.8K protein × 3 （Q8DKP6） CHLOROPHYLL A × 1016 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 238 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 18 DODECYL-ALPHA-D-MALTOSIDE × 12 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 40 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ISIA_THEVB
Isoform	—
PDB entities	13
Chains and sequence ranges	Author chain S； PDBConstruct 1–358； UniProt 1–358 Author chain T； PDBConstruct 1–358； UniProt 1–358 Author chain U； PDBConstruct 1–358； UniProt 1–358 Author chain V； PDBConstruct 1–358； UniProt 1–358 Author chain W； PDBConstruct 1–358； UniProt 1–358 Author chain X； PDBConstruct 1–358； UniProt 1–358 Author chain Y； PDBConstruct 1–358； UniProt 1–358 Author chain Z； PDBConstruct 1–358； UniProt 1–358 Author chain a； PDBConstruct 1–358； UniProt 1–358 Author chain a1； PDBConstruct 1–358； UniProt 1–358 Author chain a2； PDBConstruct 1–358； UniProt 1–358 Author chain a3； PDBConstruct 1–358； UniProt 1–358 Author chain a4； PDBConstruct 1–358； UniProt 1–358 Author chain a5； PDBConstruct 1–358； UniProt 1–358 Author chain a6； PDBConstruct 1–358； UniProt 1–358 Author chain b； PDBConstruct 1–358； UniProt 1–358 Author chain b1； PDBConstruct 1–358； UniProt 1–358 Author chain b2； PDBConstruct 1–358； UniProt 1–358 Author chain b3； PDBConstruct 1–358； UniProt 1–358 Author chain b4； PDBConstruct 1–358； UniProt 1–358 Author chain b5； PDBConstruct 1–358； UniProt 1–358 Author chain b6； PDBConstruct 1–358； UniProt 1–358 Author chain c； PDBConstruct 1–358； UniProt 1–358 Author chain c1； PDBConstruct 1–358； UniProt 1–358 Author chain c2； PDBConstruct 1–358； UniProt 1–358 Author chain c3； PDBConstruct 1–358； UniProt 1–358 Author chain c4； PDBConstruct 1–358； UniProt 1–358 Author chain c5； PDBConstruct 1–358； UniProt 1–358 Author chain c6； PDBConstruct 1–358； UniProt 1–358 Author chain d； PDBConstruct 1–358； UniProt 1–358 Author chain e； PDBConstruct 1–358； UniProt 1–358 Author chain f； PDBConstruct 1–358； UniProt 1–358 Author chain g； PDBConstruct 1–358； UniProt 1–358 Author chain h； PDBConstruct 1–358； UniProt 1–358 Author chain i； PDBConstruct 1–358； UniProt 1–358 Author chain j； PDBConstruct 1–358； UniProt 1–358 Author chain k； PDBConstruct 1–358； UniProt 1–358 Author chain l； PDBConstruct 1–358； UniProt 1–358 Author chain m； PDBConstruct 1–358； UniProt 1–358 Author chain n； PDBConstruct 1–358； UniProt 1–358 Author chain o； PDBConstruct 1–358； UniProt 1–358 Author chain p； PDBConstruct 1–358； UniProt 1–358 Author chain q； PDBConstruct 1–358； UniProt 1–358

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_id	9lzj
Deposition date deposition_date	2025-02-21
Structure title title	The PSI3-IsiA43 complex with a closed double ring of IsiA proteins bound to a trimeric PSI core
Keywords keywords	Photosystem-antenna Complex, PHOTOSYNTHESIS; PHOTOSYNTHESIS
Experimental Method method	ELECTRON MICROSCOPY

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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.

9lzj__assembly_1__model_1

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

Download this curve (.dat)

9lzj__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9lzj__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	0.00 Å
Rg (electron density)	129.80 Å
Total Rg	129.10 Å
Atom count	235011
Residues	21457
Excluded volume	4384800 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9lzj__assembly_1__model_1`	79-meric （79）	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 (22)

Entity 1 Entity 1 polymer

Description description	Photosystem I P700 chlorophyll a apoprotein A1
Molecular weight formula_weight	83267.8 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	aA,bA,cA
Atom count atom_count	235011

MTISPPEREPKVRVVVDNDPVPTSFEKWAKPGHFDRTLARGPQTTTWIWNLHALAHDFDTHTSDLEDISRKIFSAHFGHLAVVFIWLSGMYFHGAKFSNYEAWLADPTGIKPSAQVVWPIVGQGILNGDVGGGFHGIQITSGLFQLWRASGITNEFQLYCTAIGGLVMAGLMLFAGWFHYHKRAPKLEWFQNVESMLNHHLAGLLGLGSLAWAGHQIHVSLPINKLLDAGVAAKDIPLPHEFILNPSLMAELYPKVDWGFFSGVIPFFTFNWAAYSDFLTFNGGLNPVTGGLWLSDTAHHHLAIAVLFIIAGHMYRTNWGIGHSLKEILEAHKGPFTGAGHKGLYEVLTTSWHAQLAINLAMMGSLSIIVAQHMYAMPPYPYLATDYPTQLSLFTHHMWIGGFLVVGGAAHGAIFMVRDYDPAMNQNNVLDRVLRHRDAIISHLNWVCIFLGFHSFGLYVHNDTMRAFGRPQDMFSDTGIQLQPVFAQWVQNLHTLAPGGTAPNAAATASVAFGGDVVAVGGKVAMMPIVLGTADFMVHHIHAFTIHVTVLILLKGVLFARSSRLIPDKANLGFRFPCDGPGRGGTCQVSGWDHVFLGLFWMYNCISVVIFHFSWKMQSDVWGTVAPDGTVSHITGGNFAQSAITINGWLRDFLWAQASQVIGSYGSALSAYGLLFLGAHFIWAFSLMFLFSGRGYWQELIESIVWAHNKLKVAPAIQPRALSIIQGRAVGVAHYLLGGIATTWAFFLARIISVG

Entity 2 Entity 2 polymer

Description description	Photosystem I P700 chlorophyll a apoprotein A2
Molecular weight formula_weight	83123.6 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	aB,bB,cB

MATKFPKFSQDLAQDPTTRRIWYAIAMAHDFESHDGMTEENLYQKIFASHFGHLAIIFLWVSGSLFHVAWQGNFEQWVQDPVNTRPIAHAIWDPQFGKAAVDAFTQAGASNPVDIAYSGVYHWWYTIGMRTNGDLYQGAIFLLILASLALFAGWLHLQPKFRPSLSWFKNAESRLNHHLAGLFGVSSLAWAGHLIHVAIPESRGQHVGWDNFLSTMPHPAGLAPFFTGNWGVYAQNPDTASHVFGTAQGAGTAILTFLGGFHPQTESLWLTDMAHHHLAIAVLFIVAGHMYRTQFGIGHSIKEMMDAKDFFGTKVEGPFNMPHQGIYETYNNSLHFQLGWHLACLGVITSLVAQHMYSLPPYAFIAQDHTTMAALYTHHQYIAGFLMVGAFAHGAIFLVRDYDPAQNKGNVLDRVLQHKEAIISHLSWVSLFLGFHTLGLYVHNDVVVAFGTPEKQILIEPVFAQFIQAAHGKLLYGFDTLLSNPDSIASTAWPNYGNVWLPGWLDAINSGTNSLFLTIGPGDFLVHHAIALGLHTTTLILVKGALDARGSKLMPDKKDFGYAFPCDGPGRGGTCDISAWDAFYLAMFWMLNTIGWVTFYWHWKHLGVWEGNVAQFNESSTYLMGWLRDYLWLNSSQLINGYNPFGTNNLSVWAWMFLFGHLVWATGFMFLISWRGYWQELIETLVWAHERTPLANLVRWKDKPVALSIVQARLVGLAHFSVGYILTYAAFLIASTAAKFG

Entity 3 Entity 3 polymer

Description description	Photosystem I iron-sulfur center
Molecular weight formula_weight	8809.2 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	aC,bC,cC

MAHTVKIYDTCIGCTQCVRACPTDVLEMVPWDGCKAGQIASSPRTEDCVGCKRCETACPTDFLSIRVYLGAETTRSMGLAY

Entity 4 Entity 4 polymer

Description description	Photosystem I reaction center subunit II
Molecular weight formula_weight	15389.5 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	aD,bD,cD

MTTLTGQPPLYGGSTGGLLSAADTEEKYAITWTSPKEQVFEMPTAGAAVMREGENLVYFARKEQCLALAAQQLRPRKINDYKIYRIFPDGETVLIHPKDGVFPEKVNKGREAVNSVPRSIGQNPNPSQLKFTGKKPYDP

Entity 5 Entity 5 polymer

Description description	Photosystem I reaction center subunit IV
Molecular weight formula_weight	8399.5 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	aE,bE,cE

MVQRGSKVKILRPESYWYNEVGTVASVDQTPGVKYPVIVRFDKVNYTGYSGSASGVNTNNFALHEVQEVAPPKKGK

Entity 6 Entity 6 polymer

Description description	Photosystem I reaction center subunit III
Molecular weight formula_weight	17716.6 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	aF,bF,cF

MRRFLALLLVLTLWLGFTPLASADVAGLVPCKDSPAFQKRAAAAVNTTADPASGQKRFERYSQALCGEDGLPHLVVDGRLSRAGDFLIPSVLFLYIAGWIGWVGRAYLIAVRNSGEANEKEIIIDVPLAIKCMLTGFAWPLAALKELASGELTAKDNEITVSPR

Entity 7 Entity 7 polymer

Description description	Photosystem I reaction center subunit VIII
Molecular weight formula_weight	4297.2 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	aI,bI,cI

MMGSYAASFLPWIFIPVVCWLMPTVVMGLLFLYIEGEA

Entity 8 Entity 8 polymer

Description description	Photosystem I reaction center subunit IX
Molecular weight formula_weight	4770.7 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	aJ,bJ,cJ

MKHFLTYLSTAPVLAAIWMTITAGILIEFNRFYPDLLFHPL

Entity 9 Entity 9 polymer

Description description	Photosystem I reaction center subunit PsaK
Molecular weight formula_weight	8484.0 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	aK,bK,cK

MVLATLPDTTWTPSVGLVVILCNLFAIALGRYAIQSRGKGPGLPIALPALFEGFGLPELLATTSFGHLLAAGVVSGLQYAGAL

Entity 10 Entity 10 polymer

Description description	Photosystem I reaction center subunit XI
Molecular weight formula_weight	16261.7 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	aL,bL,cL

MAEELVKPYNGDPFVGHLSTPISDSGLVKTFIGNLPAYRQGLSPILRGLEVGMAHGYFLIGPWVKLGPLRDSDVANLGGLISGIALILVATACLAAYGLVSFQKGGSSSDPLKTSEGWSQFTAGFFVGAMGSAFVAFFLLENFSVVDGIMTGLFN

Entity 11 Entity 11 polymer

Description description	Photosystem I reaction center subunit XII
Molecular weight formula_weight	3426.1 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	aM,bM,cM

MALTDTQVYVALVIALLPAVLAFRLSTELYK

Entity 12 Entity 12 polymer

Description description	Photosystem I 4.8K protein
Molecular weight formula_weight	4424.3 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	aX,bX,cX

MSTMATKSAKPTYAFRTFWAVLLLAINFLVAAYYFGILK

Entity 13 Entity 13 polymer

Description description	Iron stress-induced chlorophyll-binding protein
Molecular weight formula_weight	39284.3 kDa
Source method src_method	nat
Copy count entity_count	43

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	a1,a2,a3,a4,a5,a6,b1,b2,b3,b4,b5,b6,c1,c2,c3,c4,c5,c6,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q

MAIASESPTTVTSAGLQTYGQTNVKYDWWAGNARFVNLSGLFIAAHVAQAALSVFWAGAFTLYEISQYKPDLPMGEQGLILLPHLATLGFGIGEGGKVVDLYPYFVIGAVHLISSAVLGAGALFHTFRAPHDLSTATGRARRFHFRWDDPKQLGIILGHHLLFLGFGALLLVLKATIWGGLYDANLQTVRLITQPTLDPFVIYGYQTHFASINSLEDLVGGHIYIAILLIAGGIWHILVPPLTWARKLLMFNAEAILSYSLGGIALAGFVAAYFCAVNTLAYPVEFYGPPLEVKLGIAPYFADTIELPLGQHTSRAWLANAHFFLAFFFLQGHLWHALRAMGFNFKQLETFLNPAIEN

Entity 14 Entity 14 non-polymer

Description description	CHLOROPHYLL A
Molecular weight formula_weight	893.5 kDa
Source method src_method	syn
Copy count entity_count	1016

Entity 15 Entity 15 non-polymer

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

Entity 16 Entity 16 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 17 Entity 17 non-polymer

Description description	BETA-CAROTENE
Molecular weight formula_weight	536.9 kDa
Source method src_method	syn
Copy count entity_count	238

Entity 18 Entity 18 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	18

Entity 19 Entity 19 non-polymer

Description description	DODECYL-ALPHA-D-MALTOSIDE
Molecular weight formula_weight	510.6 kDa
Source method src_method	syn
Copy count entity_count	12

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	40

Entity 21 Entity 21 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	12

Entity 22 Entity 22 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	3

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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	triclinic

Resolution resolution	3.40 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	95950

The PSI3-IsiA43 complex with a closed double ring of IsiA proteins bound to a trimeric PSI core

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

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Photosystem I P700 chlorophyll a apoprotein A2

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Photosystem I iron-sulfur center

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Photosystem I reaction center subunit II

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Photosystem I reaction center subunit IV

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Photosystem I reaction center subunit III

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Photosystem I reaction center subunit VIII

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Photosystem I reaction center subunit IX

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Photosystem I reaction center subunit PsaK

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Photosystem I reaction center subunit XI

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer