1kmh

Crystal Structure of spinach chloroplast F1-ATPase complexed with tentoxin

Method: X-RAY DIFFRACTION

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

ATPase alpha subunit

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	ATPase beta subunit × 1 （P00825） TENTOXIN × 1	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 6	ATPase beta subunit × 3 （P00825） TENTOXIN × 3	Consistent with protein count
3	Protein heterocomplex	Heteromer	Protein 2	ATPase beta subunit × 1 （P00825） TENTOXIN × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ATPA_SPIOL
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–507； UniProt 1–507

ATPase beta subunit

OrganismNot specified

UniProt P00825

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	ATPase alpha subunit × 1 （P06450） TENTOXIN × 1	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 6	ATPase alpha subunit × 3 （P06450） TENTOXIN × 3	Consistent with protein count
3	Protein heterocomplex	Heteromer	Protein 2	ATPase alpha subunit × 1 （P06450） TENTOXIN × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ATPB_SPIOL
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–498； UniProt 1–498

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	1kmh
Deposition date deposition_date	2001-12-16
Structure title title	Crystal Structure of spinach chloroplast F1-ATPase complexed with tentoxin
Keywords keywords	Protein-Inhibitor Complex, HYDROLASE; HYDROLASE
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.

1kmh__assembly_1__model_1

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

Download this curve (.dat)

1kmh__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1kmh__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	30.64 Å
Rg (electron density)	29.59 Å
Total Rg	30.33 Å
Atom count	7217
Residues	944
Excluded volume	129100 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1kmh__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1kmh__assembly_2__model_1`	hexameric （6）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`1kmh__assembly_3__model_1`	dimeric （2）	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 (3)

Entity 1 Entity 1 polymer

Description description	ATPase alpha subunit
Molecular weight formula_weight	55505.2 kDa
EC 编号 ec_number	3.6.1.34
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	7217

MATIRADEISKIIRERIEGYNREVKVVNTGTVLQVGDGIARIHGLDEVMAGELVEFEEGTIGIALNLESNNVGVVLMGDGLMIQEGSSVKATGRIAQIPVSEAYLGRVINALAKPIDGRGEITASESRLIESPAPGIMSRRSVYEPLQTGLIAIDAMIPVGRGQRELIIGDRQTGKTAVATDTILNQQGQNVICVYVAIGQKASSVAQVVTNFQERGAMEYTIVVAETADSPATLQYLAPYTGAALAEYFMYRERHTLIIYDDLSKQAQAYRQMSLLLRRPPGREAYPGDVFYLHSRLLERAAKLSSLLGEGSMTALPIVETQAGDVSAYIPTNVISITDGQIFLSADLFNAGIRPAINVGISVSRVGSAAQIKAMKKVAGKLKLELAQFAELEAFAQFASDLDKATQNQLARGQRLRELLKQPQSAPLTVEEQVMTIYTGTNGYLDSLELDQVRKYLVELRTYVKTNKPEFQEIISSTKTFTEEAEALLKEAIQEQMERFLLQEQA

Entity 2 Entity 2 polymer

Description description	ATPase beta subunit
Molecular weight formula_weight	53921.6 kDa
EC 编号 ec_number	3.6.1.34
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

MRINPTTSDPGVSTLEKKNLGRIAQIIGPVLNVAFPPGKMPNIYNALIVKGRDTAGQPMNVTCEVQQLLGNNRVRAVAMSATDGLTRGMEVIDTGAPLSVPVGGPTLGRIFNVLGEPVDNLRPVDTRTTSPIHRSAPAFTQLDTKLSIFETGIKVVNLLAPYRRGGKIGLFGGAGVGKTVLIMELINNIAKAHGGVSVFGGVGERTREGNDLYMEMKESGVINEQNIAESKVALVYGQMNEPPGARMRVGLTALTMAEYFRDVNEQDVLLFIDNIFRFVQAGSEVSALLGRMPSAVGYQPTLSTEMGSLQERITSTKEGSITSIQAVYVPADDLTDPAPATTFAHLDATTVLSRGLAAKGIYPAVDPLDSTSTMLQPRIVGEEHYEIAQRVKETLQRYKELQDIIAILGLDELSEEDRLTVARARKIERFLSQPFFVAEVFTGSPGKYVGLAETIRGFQLILSGELDSLPEQAFYLVGNIDEATAKAMNLEMESKLKK

Entity 3 Entity 3 non-polymer

Description description	TENTOXIN
Molecular weight formula_weight	414.5 kDa
Source method src_method	syn
Copy count entity_count	1

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6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

Domain ID domain_id	d1kmha1
Class class	a — All alpha proteins
Fold Fold fold	a.69 — Left-handed superhelix
Superfamily Superfamily superfamily	a.69.1 — C-terminal domain of alpha and beta (or A/B) subunits of rotary ATPases
Family Family family	a.69.1.1 — C-terminal domain of alpha and beta subunits of F1 ATP synthase

Domain ID domain_id	d1kmha2
Class class	b — All beta proteins
Fold Fold fold	b.49 — Domain of alpha and beta subunits of F1 ATP synthase-like
Superfamily Superfamily superfamily	b.49.1 — N-terminal domain of alpha and beta (or A/B) subunits of rotary ATPases
Family Family family	b.49.1.1 — N-terminal domain of alpha and beta subunits of F1 ATP synthase

Domain ID domain_id	d1kmha3
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.11 — RecA protein-like (ATPase-domain)

Domain ID domain_id	d1kmhb1
Class class	a — All alpha proteins
Fold Fold fold	a.69 — Left-handed superhelix
Superfamily Superfamily superfamily	a.69.1 — C-terminal domain of alpha and beta (or A/B) subunits of rotary ATPases
Family Family family	a.69.1.1 — C-terminal domain of alpha and beta subunits of F1 ATP synthase

Domain ID domain_id	d1kmhb2
Class class	b — All beta proteins
Fold Fold fold	b.49 — Domain of alpha and beta subunits of F1 ATP synthase-like
Superfamily Superfamily superfamily	b.49.1 — N-terminal domain of alpha and beta (or A/B) subunits of rotary ATPases
Family Family family	b.49.1.1 — N-terminal domain of alpha and beta subunits of F1 ATP synthase

Domain ID domain_id	d1kmhb3
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.11 — RecA protein-like (ATPase-domain)

CATH v4.4 (6 domains)

Domain ID domain_id	1kmhA01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	30 — Elongation Factor Tu (Ef-tu); domain 3
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1kmhA02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	1kmhA03
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	150 — Lysin
Homologous superfamily homologous superfamily	20 — ATP synthase alpha/beta chain, C-terminal domain

Domain ID domain_id	1kmhB01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	10 — Thrombin, subunit H
Homologous superfamily homologous superfamily	170 —

Domain ID domain_id	1kmhB02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	1kmhB03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	1140 — Bovine Mitochondrial F1-ATPase, ATP Synthase Beta Chain; Chain D, domain3
Homologous superfamily homologous superfamily	10 — Bovine Mitochondrial F1-atpase; Atp Synthase Beta Chain; Chain D, domain 3

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Unit-cell length a length_a	146.887 Å
Unit-cell length b length_b	146.887 Å
Unit-cell length c length_c	381.679 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	18

Space group space_group	H 3 2
Space-group number int_tables_number	155
Crystal system crystal_system	—

Resolution resolution	3.400 Å
Low-resolution limit resolution_low	6.000 Å
R factor r_factor	0.2979
R_work r_work	0.2968
R_free r_free	0.3190

Crystal Structure of spinach chloroplast F1-ATPase complexed with tentoxin

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

ATPase alpha subunit

State in the Current Structure

Other States of the Same Protein in the Database

ATPase beta subunit

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

1kmh__assembly_1__model_1

1kmh__assembly_1__model_1 | I(q)

1kmh__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 non-polymer

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (2)

Crystal Structure of spinach chloroplast F1-ATPase complexed with tentoxin

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

ATPase alpha subunit

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

ATPase beta subunit

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

1kmh__assembly_1__model_1

1kmh__assembly_1__model_1 | I(q)

1kmh__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 non-polymer

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (2)