SAXSdb — 1hlq

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

HIGH-POTENTIAL IRON-SULFUR PROTEIN

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	SULFATE ION × 5 IRON/SULFUR CLUSTER × 3 water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	HIP_RHOFE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–75； UniProt 1–75 Author chain B； PDBConstruct 1–75； UniProt 1–75 Author chain C； PDBConstruct 1–75； UniProt 1–75

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	1hlq
Deposition date deposition_date	2000-12-01
Structure title title	CRYSTAL STRUCTURE OF RHODOFERAX FERMENTANS HIGH POTENTIAL IRON-SULFUR PROTEIN REFINED TO 1.45 A
Keywords keywords	Iron sulfur cluster, electron transport; 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.

1hlq__assembly_1__model_1

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

Download this curve (.dat)

1hlq__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1hlq__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	18.95 Å
Rg (electron density)	18.46 Å
Total Rg	19.07 Å
Atom count	1680
Residues	222
Excluded volume	30207 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1hlq__assembly_1__model_1`	trimeric （3）	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 (4)

Entity 1 Entity 1 polymer

Description description	HIGH-POTENTIAL IRON-SULFUR PROTEIN
Molecular weight formula_weight	7861.0 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C
Atom count atom_count	2023

AAPLVAETDANAKSLGYVADTTKADKTKYPKHTKDQSCSTCALYQGKTAPQGACPLFAGKEVVAKGWCSAWAKKA

Entity 2 Entity 2 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	5

Entity 3 Entity 3 non-polymer

Description description	IRON/SULFUR CLUSTER
Molecular weight formula_weight	351.6 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	260

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d1hlqa_
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)

Domain ID domain_id	d1hlqb_
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)

Domain ID domain_id	d1hlqc_
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 (3 domains)

Domain ID domain_id	1hlqA00
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

Domain ID domain_id	1hlqB00
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

Domain ID domain_id	1hlqC00
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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7. Citations (6)

Structure of Rhodoferax fermentans high-potential iron-sulfur protein solved by MAD.

Acta Crystallogr.,Sect.D (2003)

PMID: 12925788 · DOI: 10.1107/S0907444903014604 PRIMARY

;The primary structure of Rhodoferax fermentans high potential iron-sulfur protein, an electron donor to the photosynthetic reaction center ;

Eur.J.Biochem. (1997)

1H NMR of high potential iron-sulfur protein from the purple non-sulfur bacterium Rhodoferax fermentans

Eur.J.Biochem. (1996)

;Kinetics of photoinduced electron transfer from high potential iron-sulfur protein (HIPIP) to the photosynthetic reaction center of the purple phototroph Rhodoferax fermentans ;

Proc.Natl.Acad.Sci.USA (1996)

DOI: 10.1073/pnas.93.14.6998

The high-potential iron-sulfur protein (HIPIP) from Rhodoferax fermentans is competent in photosynthetic electron transfer

FEBS Lett. (1995)

DOI: 10.1016/0014-5793(94)01334-W

Isolation, characterization, and functional role of the high potentialiron-sulfur protein (HIPIP) from Rhodopherax fermentans

Arch.Biochem.Biophys. (1995)

DOI: 10.1006/abbi.1995.1469

Unit-cell length a length_a	88.312 Å
Unit-cell length b length_b	88.312 Å
Unit-cell length c length_c	61.340 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	24

Space group space_group	P 43 21 2
Space-group number int_tables_number	96
Crystal system crystal_system	—

Resolution resolution	1.450 Å
Low-resolution limit resolution_low	22.000 Å
R factor r_factor	0.1860
R_work r_work	0.1870
R_free r_free	0.2180

CRYSTAL STRUCTURE OF RHODOFERAX FERMENTANS HIGH POTENTIAL IRON-SULFUR PROTEIN REFINED TO 1.45 A

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

1hlq__assembly_1__model_1

1hlq__assembly_1__model_1 | I(q)

1hlq__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (6)

CRYSTAL STRUCTURE OF RHODOFERAX FERMENTANS HIGH POTENTIAL IRON-SULFUR PROTEIN REFINED TO 1.45 A

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

1hlq__assembly_1__model_1

1hlq__assembly_1__model_1 | I(q)

1hlq__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (6)