1fe1

CRYSTAL STRUCTURE PHOTOSYSTEM II

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	18 / 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	1fe1
Deposition date deposition_date	2000-07-20
Structure title title	CRYSTAL STRUCTURE PHOTOSYSTEM II
Keywords keywords	;PHOTOSYNTHESIS, PHOTOSYNTHETIC REACTION CENTER, CORE- ANTEN A LIGHT-HARVESTING SYSTEM, THERMOPHILIC CYANOBACTERIUM, MEMBRANE PROTEIN, PHOTOSYNTHESIS-ELECTRON TRANSPORT COMPLEX ;; PHOTOSYNTHESIS/ELECTRON TRANSPORT
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.

1fe1__assembly_1__model_1

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

Download this curve (.dat)

1fe1__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1fe1__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	58.49 Å
Rg (electron density)	58.84 Å
Total Rg	59.45 Å
Atom count	1852
Residues	0
Excluded volume	573910 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1fe1__assembly_1__model_1`	octadecameric （18）	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 (17)

Entity 1 Entity 1 polymer

Description description	PROTEIN (PHOTOSYSTEM II: SUBUNIT PSBA)
Molecular weight formula_weight	14400.7 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,J
Atom count atom_count	4328

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 2 Entity 2 polymer

Description description	PROTEIN (PHOTOSYSTEM II: SUBUNIT PSBD)
Molecular weight formula_weight	14826.3 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

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

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 3 Entity 3 polymer

Description description	PROTEIN (PHOTOSYSTEM II: SUBUNIT PSBC)
Molecular weight formula_weight	13294.4 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

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

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 4 Entity 4 polymer

Description description	PROTEIN (PHOTOSYSTEM II: SUBUNIT PSBB)
Molecular weight formula_weight	13209.3 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

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

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 5 Entity 5 polymer

Description description	PROTEIN (PHOTOSYSTEM II: SUBUNIT PSBE)
Molecular weight formula_weight	3422.2 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

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

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 6 Entity 6 polymer

Description description	PROTEIN (PHOTOSYSTEM II: SUBUNIT PSBF)
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	F,O

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 7 Entity 7 polymer

Description description	PROTEIN (PHOTOSYSTEM II: SUBUNIT UNKNOWN)
Molecular weight formula_weight	26570.6 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

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

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 8 Entity 8 polymer

Description description	PROTEIN (PHOTOSYSTEM II: SUBUNIT PSBO)
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	H,Q

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 9 Entity 9 polymer

Description description	PROTEIN (PHOTOSYSTEM II: SUBUNIT PSBV)
Molecular weight formula_weight	7422.1 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

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

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 10 Entity 10 non-polymer

Description description	MANGANESE (II) ION
Molecular weight formula_weight	54.9 kDa
Source method src_method	syn
Copy count entity_count	8

Entity 11 Entity 11 non-polymer

Description description	TYROSINE
Molecular weight formula_weight	181.2 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 12 Entity 12 non-polymer

Description description	CHLOROPHYLL A
Molecular weight formula_weight	893.5 kDa
Source method src_method	syn
Copy count entity_count	64

Entity 13 Entity 13 non-polymer

Description description	PHEOPHYTIN A
Molecular weight formula_weight	871.2 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 14 Entity 14 non-polymer

Description description	FE (III) ION
Molecular weight formula_weight	55.8 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 15 Entity 15 non-polymer

Description description	2-[(3-HYDROXY-2-METHYL-5-PHOSPHONOOXYMETHYL-PYRIDIN-4-YLMETHYL)-AMINO]-2-METHYL-SUCCINIC ACID
Molecular weight formula_weight	378.3 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 16 Entity 16 non-polymer

Description description	PROTOPORPHYRIN IX CONTAINING FE
Molecular weight formula_weight	616.5 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 17 Entity 17 non-polymer

Description description	CADMIUM ION
Molecular weight formula_weight	112.4 kDa
Source method src_method	syn
Copy count entity_count	2

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6. Fold Classification (SCOP + CATH) 18 domains

SCOP 2.08 (18 domains)

Domain ID domain_id	d1fe1a_
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	d1fe1b_
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	d1fe1c_
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	d1fe1d_
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	d1fe1e_
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	d1fe1f_
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	d1fe1g_
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	d1fe1h_
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	d1fe1i_
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	d1fe1j_
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	d1fe1k_
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	d1fe1l_
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	d1fe1m_
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	d1fe1n_
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	d1fe1o_
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	d1fe1p_
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	d1fe1q_
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	d1fe1r_
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	130.010 Å
Unit-cell length b length_b	226.720 Å
Unit-cell length c length_c	308.290 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	8

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	3.800 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	—
R_work r_work	—
R_free r_free	—

CRYSTAL STRUCTURE PHOTOSYSTEM II

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

1fe1__assembly_1__model_1

1fe1__assembly_1__model_1 | I(q)

1fe1__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 (17)

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 non-polymer

Entity 11 Entity 11 non-polymer

Entity 12 Entity 12 non-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

6. Fold Classification (SCOP + CATH) 18 domains

SCOP 2.08 (18 domains)

7. Citations (1)