SAXSdb — 1hpi

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

HIGH POTENTIAL IRON SULFUR PROTEIN

Ectothiorhodospira shaposhnikovii

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	IRON/SULFUR CLUSTER × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	HIP2_ECTVA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–71； UniProt 1–71

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	1hpi
Deposition date deposition_date	1993-12-09
Structure title title	MOLECULAR STRUCTURE OF THE OXIDIZED HIGH-POTENTIAL IRON-SULFUR PROTEIN ISOLATED FROM ECTOTHIORHODOSPIRA VACUOLATA
Keywords keywords	ELECTRON TRANSFER(IRON-SULFUR PROTEIN); ELECTRON TRANSFER(IRON-SULFUR PROTEIN)
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.

1hpi__assembly_1__model_1

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

Download this curve (.dat)

1hpi__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1hpi__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	11.79 Å
Rg (electron density)	10.75 Å
Total Rg	11.82 Å
Atom count	556
Residues	71
Excluded volume	9716 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1hpi__assembly_1__model_1`	monomeric （1）	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	HIGH POTENTIAL IRON SULFUR PROTEIN
Molecular weight formula_weight	7824.6 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	613

MERLSEDDPAAQALEYRHDASSVQHPAYEEGQTCLNCLLYTDASAQDWGPCSVFPGKLVSANGWCTAWVAR

Source Source

Source organism organism	Ectothiorhodospira shaposhnikovii
NCBI taxonomy ID ncbi_taxonomy_id	1054

Entity 2 Entity 2 non-polymer

Description description	IRON/SULFUR CLUSTER
Molecular weight formula_weight	351.6 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	57

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1hpia_
Class class	g — Small proteins
Fold Fold fold	g.35 — HIPIP (high potential iron protein)
Superfamily Superfamily superfamily	g.35.1 — HIPIP (high potential iron protein)
Family Family family	g.35.1.1 — HIPIP (high potential iron protein)

CATH v4.4 (1 domains)

Domain ID domain_id	1hpiA00
Class class	4 — Few Secondary Structures
Architecture architecture	10 — Irregular
Topology topology	490 — High-Potential Iron-Sulfur Protein; Chain A
Homologous superfamily homologous superfamily	10 — High potential iron-sulphur protein

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Unit-cell length a length_a	58.400 Å
Unit-cell length b length_b	64.700 Å
Unit-cell length c length_c	39.300 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	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	1.800 Å
Low-resolution limit resolution_low	— Å
R factor r_factor	0.1630
R_work r_work	—
R_free r_free	—

MOLECULAR STRUCTURE OF THE OXIDIZED HIGH-POTENTIAL IRON-SULFUR PROTEIN ISOLATED FROM ECTOTHIORHODOSPIRA VACUOLATA

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

HIGH POTENTIAL IRON SULFUR PROTEIN

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

1hpi__assembly_1__model_1

1hpi__assembly_1__model_1 | I(q)

1hpi__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)

MOLECULAR STRUCTURE OF THE OXIDIZED HIGH-POTENTIAL IRON-SULFUR PROTEIN ISOLATED FROM ECTOTHIORHODOSPIRA VACUOLATA

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

HIGH POTENTIAL IRON SULFUR PROTEIN

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

1hpi__assembly_1__model_1

1hpi__assembly_1__model_1 | I(q)

1hpi__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)