1qzv

Crystal structure of plant photosystem I

Method: X-RAY DIFFRACTION

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

No usable UniProt protein identity is available for this entry.

The relationship tables retain this entry's assembly and composition data, but cross-PDB links for the same protein cannot be established reliably without a unified protein identity.

Assembly Composition of the Current Entry

Assembly	Physical composition	Protein state	蛋白 / DNA / RNA / 其他Polymer	Data consistency
1	Protein heterocomplex	Heteromer	16 / 0 / 0 / 0	Consistent with protein count
2	Protein heterocomplex	Heteromer	16 / 0 / 0 / 0	Consistent with protein count

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	1qzv
Deposition date deposition_date	2003-09-18
Structure title title	Crystal structure of plant photosystem I
Keywords keywords	PHOTOSYNTHESIS, PLANT PHOTOSYNTHETIC REACTION CENTER, PERIPHERAL ANTENNA, LIGHT-HARVESTING SYSTEM, PLANT MEMBRANE PROTEIN COMPLEX; PHOTOSYNTHESIS
Experimental Method method	X-RAY DIFFRACTION

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3. Official assembly/model SAXS Official SAXS Profiles

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

1qzv__assembly_1__model_1

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

Download this curve (.dat)

1qzv__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1qzv__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	48.83 Å
Rg (electron density)	48.71 Å
Total Rg	48.48 Å
Atom count	4225
Residues	0
Excluded volume	667010 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1qzv__assembly_1__model_1`	hexadecameric （16）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1qzv__assembly_2__model_1`	hexadecameric （16）	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 (19)

Entity 1 Entity 1 polymer

Description description	PLANT PHOTOSYSTEM I: SUBUNIT PSAA
Molecular weight formula_weight	61804.1 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,P
Atom count atom_count	13938

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 2 Entity 2 polymer

Description description	PLANT PHOTOSYSTEM I: SUBUNIT PSAB
Molecular weight formula_weight	62314.7 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,Q

Entity 3 Entity 3 polymer

Description description	PLANT PHOTOSYSTEM I: SUBUNIT PSAC
Molecular weight formula_weight	6826.4 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C,R

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 4 Entity 4 polymer

Description description	PLANT PHOTOSYSTEM I: SUBUNIT PSAD
Molecular weight formula_weight	13124.2 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D,S

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 5 Entity 5 polymer

Description description	PLANT PHOTOSYSTEM I: SUBUNIT PSAE
Molecular weight formula_weight	5464.7 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E,T

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 6 Entity 6 polymer

Description description	PLANT PHOTOSYSTEM I: SUBUNIT PSAF
Molecular weight formula_weight	13804.8 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	F,U

XXXXXXXXXXXXXXXXXEKQALKKLQASLKLYADDSAPALAIKATMEXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 7 Entity 7 polymer

Description description	PLANT PHOTOSYSTEM I: SUBUNIT PSAG
Molecular weight formula_weight	6315.8 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

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

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 8 Entity 8 polymer

Description description	PLANT PHOTOSYSTEM I: SUBUNIT PSAH
Molecular weight formula_weight	4443.5 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	H,W

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 9 Entity 9 polymer

Description description	PLANT PHOTOSYSTEM I: SUBUNIT PSAI
Molecular weight formula_weight	2571.2 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	I,Y

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 10 Entity 10 polymer

Description description	PLANT PHOTOSYSTEM I: SUBUNIT PSAJ
Molecular weight formula_weight	3507.3 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	J,Z

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 11 Entity 11 polymer

Description description	PLANT PHOTOSYSTEM I: SUBUNIT PSAK
Molecular weight formula_weight	3592.4 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	K,5

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 12 Entity 12 polymer

Description description	PLANT PHOTOSYSTEM I: SUBUNIT PSAL
Molecular weight formula_weight	11507.2 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

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

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 13 Entity 13 polymer

Description description	PLANT LIGHT HARVESTING COMPLEX I(LHCI): SUBUNIT LHCA1
Molecular weight formula_weight	9294.4 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	1,7

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 14 Entity 14 polymer

Description description	PLANT LIGHT HARVESTING COMPLEX I(LHCI): SUBUNIT LHCA2
Molecular weight formula_weight	9805.1 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	2,8

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 15 Entity 15 polymer

Description description	PLANT LIGHT HARVESTING COMPLEX I(LHCI): SUBUNIT LHCA3
Molecular weight formula_weight	9975.3 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	3,9

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 16 Entity 16 polymer

Description description	PLANT LIGHT HARVESTING COMPLEX I(LHCI): SUBUNIT LHCA4
Molecular weight formula_weight	10145.5 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	4,0

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 17 Entity 17 non-polymer

Description description	CHLOROPHYLL A
Molecular weight formula_weight	893.5 kDa
Source method src_method	syn
Copy count entity_count	334

Entity 18 Entity 18 non-polymer

Description description	PHYLLOQUINONE
Molecular weight formula_weight	450.7 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 19 Entity 19 non-polymer

Description description	IRON/SULFUR CLUSTER
Molecular weight formula_weight	351.6 kDa
Source method src_method	syn
Copy count entity_count	6

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6. Fold Classification (SCOP + CATH) 32 domains

SCOP 2.08 (32 domains)

Domain ID domain_id	d1qzv0_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzv1_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzv2_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzv3_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzv4_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzv5_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzv6_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzv7_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzv8_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzv9_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzva_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvb_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvc_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvd_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzve_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvf_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvg_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvh_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvi_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvj_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvk_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvl_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvp_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvq_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvr_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvs_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvt_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvu_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvv_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvw_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvy_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

Domain ID domain_id	d1qzvz_
Class class	i — Low resolution protein structures
Fold Fold fold	i.5 — Photosystems
Superfamily Superfamily superfamily	i.5.1 — Photosystems
Family Family family	i.5.1.1 — Photosystems

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Unit-cell length a length_a	182.283 Å
Unit-cell length b length_b	190.376 Å
Unit-cell length c length_c	220.253 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.48 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	4.440 Å
Low-resolution limit resolution_low	50.000 Å
R factor r_factor	0.4100
R_work r_work	0.4100
R_free r_free	0.4200

Crystal structure of plant photosystem I

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

Assembly Composition of the Current Entry

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

1qzv__assembly_1__model_1

1qzv__assembly_1__model_1 | I(q)

1qzv__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (19)

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 polymer

Polymer Polymer

Entity 14 Entity 14 polymer

Polymer Polymer

Entity 15 Entity 15 polymer

Polymer Polymer

Entity 16 Entity 16 polymer

Polymer Polymer

Entity 17 Entity 17 non-polymer

Entity 18 Entity 18 non-polymer

Entity 19 Entity 19 non-polymer

6. Fold Classification (SCOP + CATH) 32 domains

SCOP 2.08 (32 domains)

7. Citations (1)