6uzv

The structure of a red shifted photosystem I complex

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 33	Photosystem I P700 chlorophyll a apoprotein A2 × 3 Photosystem I iron-sulfur center × 3 （P32422） Photosystem I reaction center subunit II × 3 （P19569） Photosystem I reaction center subunit IV × 3 （P12975） Photosystem I reaction center subunit III × 3 （P29256） Photosystem I reaction center subunit VIII × 3 （Q55330） Photosystem I reaction center subunit IX × 3 （Q55329） Photosystem I reaction center subunit XI × 3 （P37277） Photosystem I reaction center subunit XII × 3 （P72986） Photosystem I reaction center subunit PsaK 2 × 3 （P74564） 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 12 CHLOROPHYLL A ISOMER × 3 CHLOROPHYLL A × 288 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 69 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 DODECYL-BETA-D-MALTOSIDE × 6 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAA_SYNY3
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain 1； PDBConstruct 1–751； UniProt 1–751 Author chain A； PDBConstruct 1–751； UniProt 1–751 Author chain a； PDBConstruct 1–751； UniProt 1–751

Photosystem I iron-sulfur center

OrganismNot specified

UniProt P32422

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 33	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P29254） Photosystem I P700 chlorophyll a apoprotein A2 × 3 Photosystem I reaction center subunit II × 3 （P19569） Photosystem I reaction center subunit IV × 3 （P12975） Photosystem I reaction center subunit III × 3 （P29256） Photosystem I reaction center subunit VIII × 3 （Q55330） Photosystem I reaction center subunit IX × 3 （Q55329） Photosystem I reaction center subunit XI × 3 （P37277） Photosystem I reaction center subunit XII × 3 （P72986） Photosystem I reaction center subunit PsaK 2 × 3 （P74564） 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 12 CHLOROPHYLL A ISOMER × 3 CHLOROPHYLL A × 288 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 69 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 DODECYL-BETA-D-MALTOSIDE × 6 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAC_SYNY3
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain 3； PDBConstruct 1–81； UniProt 1–81 Author chain C； PDBConstruct 1–81； UniProt 1–81 Author chain c； PDBConstruct 1–81； UniProt 1–81

Photosystem I reaction center subunit II

OrganismNot specified

UniProt P19569

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 33	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P29254） Photosystem I P700 chlorophyll a apoprotein A2 × 3 Photosystem I iron-sulfur center × 3 （P32422） Photosystem I reaction center subunit IV × 3 （P12975） Photosystem I reaction center subunit III × 3 （P29256） Photosystem I reaction center subunit VIII × 3 （Q55330） Photosystem I reaction center subunit IX × 3 （Q55329） Photosystem I reaction center subunit XI × 3 （P37277） Photosystem I reaction center subunit XII × 3 （P72986） Photosystem I reaction center subunit PsaK 2 × 3 （P74564） 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 12 CHLOROPHYLL A ISOMER × 3 CHLOROPHYLL A × 288 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 69 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 DODECYL-BETA-D-MALTOSIDE × 6 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAD_SYNY3
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain 4； PDBConstruct 1–141； UniProt 1–141 Author chain D； PDBConstruct 1–141； UniProt 1–141 Author chain d； PDBConstruct 1–141； UniProt 1–141

Photosystem I reaction center subunit IV

OrganismNot specified

UniProt P12975

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 33	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P29254） Photosystem I P700 chlorophyll a apoprotein A2 × 3 Photosystem I iron-sulfur center × 3 （P32422） Photosystem I reaction center subunit II × 3 （P19569） Photosystem I reaction center subunit III × 3 （P29256） Photosystem I reaction center subunit VIII × 3 （Q55330） Photosystem I reaction center subunit IX × 3 （Q55329） Photosystem I reaction center subunit XI × 3 （P37277） Photosystem I reaction center subunit XII × 3 （P72986） Photosystem I reaction center subunit PsaK 2 × 3 （P74564） 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 12 CHLOROPHYLL A ISOMER × 3 CHLOROPHYLL A × 288 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 69 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 DODECYL-BETA-D-MALTOSIDE × 6 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAE_SYNY3
Isoform	—
PDB entities	5
Chains and sequence ranges	Author chain 5； PDBConstruct 1–74； UniProt 1–74 Author chain E； PDBConstruct 1–74； UniProt 1–74 Author chain e； PDBConstruct 1–74； UniProt 1–74

Photosystem I reaction center subunit III

OrganismNot specified

UniProt P29256

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 33	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P29254） Photosystem I P700 chlorophyll a apoprotein A2 × 3 Photosystem I iron-sulfur center × 3 （P32422） Photosystem I reaction center subunit II × 3 （P19569） Photosystem I reaction center subunit IV × 3 （P12975） Photosystem I reaction center subunit VIII × 3 （Q55330） Photosystem I reaction center subunit IX × 3 （Q55329） Photosystem I reaction center subunit XI × 3 （P37277） Photosystem I reaction center subunit XII × 3 （P72986） Photosystem I reaction center subunit PsaK 2 × 3 （P74564） 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 12 CHLOROPHYLL A ISOMER × 3 CHLOROPHYLL A × 288 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 69 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 DODECYL-BETA-D-MALTOSIDE × 6 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAF_SYNY3
Isoform	—
PDB entities	6
Chains and sequence ranges	Author chain 6； PDBConstruct 1–165； UniProt 1–165 Author chain F； PDBConstruct 1–165； UniProt 1–165 Author chain f； PDBConstruct 1–165； UniProt 1–165

Photosystem I reaction center subunit VIII

OrganismNot specified

UniProt Q55330

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 33	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P29254） Photosystem I P700 chlorophyll a apoprotein A2 × 3 Photosystem I iron-sulfur center × 3 （P32422） Photosystem I reaction center subunit II × 3 （P19569） Photosystem I reaction center subunit IV × 3 （P12975） Photosystem I reaction center subunit III × 3 （P29256） Photosystem I reaction center subunit IX × 3 （Q55329） Photosystem I reaction center subunit XI × 3 （P37277） Photosystem I reaction center subunit XII × 3 （P72986） Photosystem I reaction center subunit PsaK 2 × 3 （P74564） 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 12 CHLOROPHYLL A ISOMER × 3 CHLOROPHYLL A × 288 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 69 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 DODECYL-BETA-D-MALTOSIDE × 6 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAI_SYNY3
Isoform	—
PDB entities	7
Chains and sequence ranges	Author chain I； PDBConstruct 1–40； UniProt 1–40 Author chain h； PDBConstruct 1–40； UniProt 1–40 Author chain i； PDBConstruct 1–40； UniProt 1–40

Photosystem I reaction center subunit IX

OrganismNot specified

UniProt Q55329

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 33	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P29254） Photosystem I P700 chlorophyll a apoprotein A2 × 3 Photosystem I iron-sulfur center × 3 （P32422） Photosystem I reaction center subunit II × 3 （P19569） Photosystem I reaction center subunit IV × 3 （P12975） Photosystem I reaction center subunit III × 3 （P29256） Photosystem I reaction center subunit VIII × 3 （Q55330） Photosystem I reaction center subunit XI × 3 （P37277） Photosystem I reaction center subunit XII × 3 （P72986） Photosystem I reaction center subunit PsaK 2 × 3 （P74564） 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 12 CHLOROPHYLL A ISOMER × 3 CHLOROPHYLL A × 288 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 69 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 DODECYL-BETA-D-MALTOSIDE × 6 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAJ_SYNY3
Isoform	—
PDB entities	8
Chains and sequence ranges	Author chain 7； PDBConstruct 1–40； UniProt 1–40 Author chain J； PDBConstruct 1–40； UniProt 1–40 Author chain j； PDBConstruct 1–40； UniProt 1–40

Photosystem I reaction center subunit XI

OrganismNot specified

UniProt P37277

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 33	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P29254） Photosystem I P700 chlorophyll a apoprotein A2 × 3 Photosystem I iron-sulfur center × 3 （P32422） Photosystem I reaction center subunit II × 3 （P19569） Photosystem I reaction center subunit IV × 3 （P12975） Photosystem I reaction center subunit III × 3 （P29256） Photosystem I reaction center subunit VIII × 3 （Q55330） Photosystem I reaction center subunit IX × 3 （Q55329） Photosystem I reaction center subunit XII × 3 （P72986） Photosystem I reaction center subunit PsaK 2 × 3 （P74564） 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 12 CHLOROPHYLL A ISOMER × 3 CHLOROPHYLL A × 288 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 69 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 DODECYL-BETA-D-MALTOSIDE × 6 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAL_SYNY3
Isoform	—
PDB entities	9
Chains and sequence ranges	Author chain 0； PDBConstruct 1–157； UniProt 1–157 Author chain L； PDBConstruct 1–157； UniProt 1–157 Author chain l； PDBConstruct 1–157； UniProt 1–157

Photosystem I reaction center subunit XII

OrganismNot specified

UniProt P72986

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 33	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P29254） Photosystem I P700 chlorophyll a apoprotein A2 × 3 Photosystem I iron-sulfur center × 3 （P32422） Photosystem I reaction center subunit II × 3 （P19569） Photosystem I reaction center subunit IV × 3 （P12975） Photosystem I reaction center subunit III × 3 （P29256） Photosystem I reaction center subunit VIII × 3 （Q55330） Photosystem I reaction center subunit IX × 3 （Q55329） Photosystem I reaction center subunit XI × 3 （P37277） Photosystem I reaction center subunit PsaK 2 × 3 （P74564） 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 12 CHLOROPHYLL A ISOMER × 3 CHLOROPHYLL A × 288 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 69 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 DODECYL-BETA-D-MALTOSIDE × 6 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAM_SYNY3
Isoform	—
PDB entities	10
Chains and sequence ranges	Author chain 9； PDBConstruct 1–31； UniProt 1–31 Author chain M； PDBConstruct 1–31； UniProt 1–31 Author chain m； PDBConstruct 1–31； UniProt 1–31

Photosystem I reaction center subunit PsaK 2

OrganismNot specified

UniProt P74564

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 33	Photosystem I P700 chlorophyll a apoprotein A1 × 3 （P29254） Photosystem I P700 chlorophyll a apoprotein A2 × 3 Photosystem I iron-sulfur center × 3 （P32422） Photosystem I reaction center subunit II × 3 （P19569） Photosystem I reaction center subunit IV × 3 （P12975） Photosystem I reaction center subunit III × 3 （P29256） Photosystem I reaction center subunit VIII × 3 （Q55330） Photosystem I reaction center subunit IX × 3 （Q55329） Photosystem I reaction center subunit XI × 3 （P37277） Photosystem I reaction center subunit XII × 3 （P72986） 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 12 CHLOROPHYLL A ISOMER × 3 CHLOROPHYLL A × 288 PHYLLOQUINONE × 6 IRON/SULFUR CLUSTER × 9 BETA-CAROTENE × 69 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 12 DODECYL-BETA-D-MALTOSIDE × 6 CALCIUM ION × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSAK2_SYNY3
Isoform	—
PDB entities	11
Chains and sequence ranges	Author chain 8； PDBConstruct 1–90； UniProt 1–90 Author chain K； PDBConstruct 1–90； UniProt 1–90 Author chain k； PDBConstruct 1–90； UniProt 1–90

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	6uzv
Deposition date deposition_date	2019-11-15
Structure title title	The structure of a red shifted photosystem I complex
Keywords keywords	Photosystem, Antenna, Chlorophyll, Membrane, 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.

6uzv__assembly_1__model_1

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

Download this curve (.dat)

6uzv__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

6uzv__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	68.17 Å
Rg (electron density)	67.37 Å
Total Rg	67.30 Å
Atom count	72606
Residues	6711
Excluded volume	1353000 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`6uzv__assembly_1__model_1`	33-meric （33）	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 (20)

Entity 1 Entity 1 polymer

Description description	Photosystem I P700 chlorophyll a apoprotein A1
Molecular weight formula_weight	83036.4 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,a,1
Atom count atom_count	72606

MTISPPEREAKAKVSVDNNPVPTSFEKWGKPGHFDRTLARGPKTTTWIWNLHANAHDFDSQTSDLEDVSRKIFSAHFGHLAVVFVWLSGMYFHGAKFSNYEGWLADPTHIKPSAQVVWPIVGQGILNGDVGGGFHGIQITSGLFYLWRASGFTDSYQLYCTAIGGLVMAALMLFAGWFHYHVKAPKLEWFQNVESMMNHHLAGLLGLGSLGWAGHQIHVSMPINKLLDAGVAPKDIPLPHEFILEPSKMAELYPSFAQGLTPFFTLNWGVYSDFLTFKGGLNPVTGGLWLSDTAHHHLAIAVLFIIAGHMYRTNWGIGHSMKEILEAHKGPFTGEGHKGLYEILTTSWHAQLAINLALLGSLTIIVAQHMYAMPPYPYQAIDYATQLSLFTHHMWIGGFLIVGAGAHGAIFMVRDYDPAKNVNNLLDRMLRHRDAIISHLNWVCIFLGFHSFGLYIHNDTMRALGRPQDMFSDTAIQLQPIFAQWVQHLHTLAPGATAPNALATASYAFGGETIAVAGKVAMMPITLGTADFMVHHIHAFTIHVTALILLKGVLYARSSRLVPDKANLGFRFPCDGPGRGGTCQVSGWDHVFLGLFWMYNSLSIVIFHFSWKMQSDVWGTVSPDGSVTHVTLGNFAQSAITINGWLRDFLWAQAANVINSYGSALSAYGIMFLAGHFVFAFSLMFLFSGRGYWQELIESIVWAHNKLNVAPAIQPRALSIIQGRAVGVAHYLLGGIVTTWAFFLARSLSIG

Entity 2 Entity 2 polymer

Description description	Photosystem I P700 chlorophyll a apoprotein A2
Molecular weight formula_weight	81971.2 kDa
Mutation mutation	Red_a
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,b,2

MATKFPKFSQDLAQDPTTRRIWYGIATAHDFETHDGMTEENLYQKIFASHFGHIAIIFLWTSGTLFHVAWQGNFEQWIKDPLNIRPIAHAIWDPHFGEGAVNAFTQAGASNPVNIAYSGVYHWFYTIGMTTNQELYSGAVFLLVLASLFLFAGWLHLQPKFRPSLAWFKNAESRLNHHLAGLFGVSSLAWAGHLVHVAIPEARGQHVGWDNFLSTPPHPAGLMPFFTGNWGVYAADPDTAGHIFGTSEGAGTAILTFLGGFHPQTESLWLTDIAHHHLAIAVIFIIAGHMYRTNWGIGHSIKEILNAHKGPLTGAGHTNLYDTINNSLHFQLGLALASLGVITSLVAQHMYSLPSYAFIAQDHTTQAALYTHHQYIAGFLMVGAFAHGAIFFVRDYDPVANKDNVLARMLEHKEALISHLSWVSLFLGFHTLGLYVHNDVVVAFGTPEKQILIEPVFAQWIQATSGKALYGFDVLLSNPDSIASTAWPNYGNVWLPGWLDAINSGTNSLFLTIGPGDFLVHHAIALGLHTTALILIKGALDARGSKLMPDKKDFGYSFPCDGPGRGGTCDISAWDAFYLAMFWMLNTLGWLTFYWHWKHLGVWSGNVAQFNENSTYLMGWFRDYLWANSAQLINGYNPYGVNNLSVWAWMFLFGHLVWATGFMFLISWRGYWQELIETIVWAHERTPLANLVRWKDKPVALSIVQARLVGLAHFTVGYVLTYAAFLIASTAGKFG

Entity 3 Entity 3 polymer

Description description	Photosystem I iron-sulfur center
Molecular weight formula_weight	8837.3 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	C,c,3

MSHSVKIYDTCIGCTQCVRACPLDVLEMVPWDGCKAAQIASSPRTEDCVGCKRCETACPTDFLSIRVYLGAETTRSMGLAY

Entity 4 Entity 4 polymer

Description description	Photosystem I reaction center subunit II
Molecular weight formula_weight	15663.7 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D,d,4

MTELSGQPPKFGGSTGGLLSKANREEKYAITWTSASEQVFEMPTGGAAIMNEGENLLYLARKEQCLALGTQLRTKFKPKIQDYKIYRVYPSGEVQYLHPADGVFPEKVNEGREAQGTKTRRIGQNPEPVTIKFSGKAPYEV

Entity 5 Entity 5 polymer

Description description	Photosystem I reaction center subunit IV
Molecular weight formula_weight	8154.1 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E,e,5

MALNRGDKVRIKRTESYWYGDVGTVASVEKSGILYPVIVRFDRVNYNGFSGSASGVNTNNFAENELELVQAAAK

Entity 6 Entity 6 polymer

Description description	Photosystem I reaction center subunit III
Molecular weight formula_weight	18267.1 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	F,f,6

MKHLLALLLAFTLWFNFAPSASADDFANLTPCSENPAYLAKSKNFLNTTNDPNSGKIRAERYASALCGPEGYPHLIVDGRFTHAGDFLIPSILFLYIAGWIGWVGRSYLIEIRESKNPEMQEVVINVPLAIKKMLGGFLWPLAAVGEYTSGKLVMKDSEIPTSPR

Entity 7 Entity 7 polymer

Description description	Photosystem I reaction center subunit VIII
Molecular weight formula_weight	4414.1 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	I,i,h

MDGSYAASYLPWILIPMVGWLFPAVTMGLLFIHIESEGEG

Entity 8 Entity 8 polymer

Description description	Photosystem I reaction center subunit IX
Molecular weight formula_weight	4535.4 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	J,j,7

MDGLKSFLSTAPVMIMALLTFTAGILIEFNRFYPDLLFHP

Entity 9 Entity 9 polymer

Description description	Photosystem I reaction center subunit XI
Molecular weight formula_weight	16631.8 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	L,l,0

MAESNQVVQAYNGDPFVGHLSTPISDSAFTRTFIGNLPAYRKGLSPILRGLEVGMAHGYFLIGPWTLLGPLRDSEYQYIGGLIGALALILVATAALSSYGLVTFQGEQGSGDTLQTADGWSQFAAGFFVGGMGGAFVAYFLLENLSVVDGIFRGLFN

Entity 10 Entity 10 polymer

Description description	Photosystem I reaction center subunit XII
Molecular weight formula_weight	3382.1 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	M,m,9

MALSDTQILAALVVALLPAFLAFRLSTELYK

Entity 11 Entity 11 polymer

Description description	Photosystem I reaction center subunit PsaK 2
Molecular weight formula_weight	9312.1 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	K,k,8

MFNTALLLAQASPTTAGWSLSVGIIMCLCNVFAFVIGYFAIQKTGKGKDLALPQLASKKTFGLPELLATMSFGHILGAGMVLGLASSGIL

Entity 12 Entity 12 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	12

Entity 13 Entity 13 non-polymer

Description description	CHLOROPHYLL A ISOMER
Molecular weight formula_weight	893.5 kDa
Source method src_method	syn
Copy count entity_count	3

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	288

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	69

Entity 18 Entity 18 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 19 Entity 19 non-polymer

Description description	DODECYL-BETA-D-MALTOSIDE
Molecular weight formula_weight	510.6 kDa
Source method src_method	syn
Copy count entity_count	6

Entity 20 Entity 20 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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6. Fold Classification (SCOP + CATH) 23 domains

SCOP 2.08 (20 domains)

Domain ID domain_id	d6uzv0_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.31 — Photosystem I reaction center subunit XI, PsaL
Superfamily Superfamily superfamily	f.31.1 — Photosystem I reaction center subunit XI, PsaL
Family Family family	f.31.1.1 — Photosystem I reaction center subunit XI, PsaL

Domain ID domain_id	d6uzv1_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.29 — Photosystem I subunits PsaA/PsaB
Superfamily Superfamily superfamily	f.29.1 — Photosystem I subunits PsaA/PsaB
Family Family family	f.29.1.1 — Photosystem I subunits PsaA/PsaB

Domain ID domain_id	d6uzv2_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.29 — Photosystem I subunits PsaA/PsaB
Superfamily Superfamily superfamily	f.29.1 — Photosystem I subunits PsaA/PsaB
Family Family family	f.29.1.1 — Photosystem I subunits PsaA/PsaB

Domain ID domain_id	d6uzv3_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.1 — 4Fe-4S ferredoxins
Family Family family	d.58.1.2 — 7-Fe ferredoxin

Domain ID domain_id	d6uzv4_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.187 — Photosystem I subunit PsaD
Superfamily Superfamily superfamily	d.187.1 — Photosystem I subunit PsaD
Family Family family	d.187.1.1 — Photosystem I subunit PsaD

Domain ID domain_id	d6uzv5_
Class class	b — All beta proteins
Fold Fold fold	b.34 — SH3-like barrel
Superfamily Superfamily superfamily	b.34.4 — Electron transport accessory proteins
Family Family family	b.34.4.2 — Photosystem I accessory protein E (PsaE)

Domain ID domain_id	d6uzv6_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.23 — Single transmembrane helix
Superfamily Superfamily superfamily	f.23.16 — Subunit III of photosystem I reaction centre, PsaF
Family Family family	f.23.16.1 — Subunit III of photosystem I reaction centre, PsaF

Domain ID domain_id	d6uzv7_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.23 — Single transmembrane helix
Superfamily Superfamily superfamily	f.23.18 — Subunit IX of photosystem I reaction centre, PsaJ
Family Family family	f.23.18.1 — Subunit IX of photosystem I reaction centre, PsaJ

Domain ID domain_id	d6uzv8_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.30 — Photosystem I reaction center subunit X, PsaK
Superfamily Superfamily superfamily	f.30.1 — Photosystem I reaction center subunit X, PsaK
Family Family family	f.30.1.0 — automated matches

Domain ID domain_id	d6uzva_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.29 — Photosystem I subunits PsaA/PsaB
Superfamily Superfamily superfamily	f.29.1 — Photosystem I subunits PsaA/PsaB
Family Family family	f.29.1.1 — Photosystem I subunits PsaA/PsaB

Domain ID domain_id	d6uzvb_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.29 — Photosystem I subunits PsaA/PsaB
Superfamily Superfamily superfamily	f.29.1 — Photosystem I subunits PsaA/PsaB
Family Family family	f.29.1.1 — Photosystem I subunits PsaA/PsaB

Domain ID domain_id	d6uzvc_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.1 — 4Fe-4S ferredoxins
Family Family family	d.58.1.2 — 7-Fe ferredoxin

Domain ID domain_id	d6uzvd_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.187 — Photosystem I subunit PsaD
Superfamily Superfamily superfamily	d.187.1 — Photosystem I subunit PsaD
Family Family family	d.187.1.1 — Photosystem I subunit PsaD

Domain ID domain_id	d6uzve_
Class class	b — All beta proteins
Fold Fold fold	b.34 — SH3-like barrel
Superfamily Superfamily superfamily	b.34.4 — Electron transport accessory proteins
Family Family family	b.34.4.2 — Photosystem I accessory protein E (PsaE)

Domain ID domain_id	d6uzvf_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.23 — Single transmembrane helix
Superfamily Superfamily superfamily	f.23.16 — Subunit III of photosystem I reaction centre, PsaF
Family Family family	f.23.16.1 — Subunit III of photosystem I reaction centre, PsaF

Domain ID domain_id	d6uzvh_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.23 — Single transmembrane helix
Superfamily Superfamily superfamily	f.23.17 — Subunit VIII of photosystem I reaction centre, PsaI
Family Family family	f.23.17.1 — Subunit VIII of photosystem I reaction centre, PsaI

Domain ID domain_id	d6uzvi_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.23 — Single transmembrane helix
Superfamily Superfamily superfamily	f.23.17 — Subunit VIII of photosystem I reaction centre, PsaI
Family Family family	f.23.17.1 — Subunit VIII of photosystem I reaction centre, PsaI

Domain ID domain_id	d6uzvj_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.23 — Single transmembrane helix
Superfamily Superfamily superfamily	f.23.18 — Subunit IX of photosystem I reaction centre, PsaJ
Family Family family	f.23.18.1 — Subunit IX of photosystem I reaction centre, PsaJ

Domain ID domain_id	d6uzvk_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.30 — Photosystem I reaction center subunit X, PsaK
Superfamily Superfamily superfamily	f.30.1 — Photosystem I reaction center subunit X, PsaK
Family Family family	f.30.1.0 — automated matches

Domain ID domain_id	d6uzvl_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.31 — Photosystem I reaction center subunit XI, PsaL
Superfamily Superfamily superfamily	f.31.1 — Photosystem I reaction center subunit XI, PsaL
Family Family family	f.31.1.1 — Photosystem I reaction center subunit XI, PsaL

CATH v4.4 (3 domains)

Domain ID domain_id	6uzv001
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1240 — Photosystem 1 Reaction Centre Subunit Xi; Chain: L;
Homologous superfamily homologous superfamily	10 — Photosystem I PsaL, reaction centre subunit XI

Domain ID domain_id	6uzvL01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1240 — Photosystem 1 Reaction Centre Subunit Xi; Chain: L;
Homologous superfamily homologous superfamily	10 — Photosystem I PsaL, reaction centre subunit XI

Domain ID domain_id	6uzvl01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1240 — Photosystem 1 Reaction Centre Subunit Xi; Chain: L;
Homologous superfamily homologous superfamily	10 — Photosystem I PsaL, reaction centre subunit XI

▶

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	3.10 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	196181

The structure of a red shifted photosystem I complex

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 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 XI

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 XII

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 2

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer