SAXSdb — 1qhu

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

PROTEIN (HEMOPEXIN)

OrganismNot specified

UniProt P20058

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	CHLORIDE ION × 2 SODIUM ION × 4 PHOSPHATE ION × 1 PROTOPORPHYRIN IX CONTAINING FE × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	HEMO_RABIT
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–460； UniProt 1–460

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	1qhu
Deposition date deposition_date	1999-05-27
Structure title title	MAMMALIAN BLOOD SERUM HAEMOPEXIN DEGLYCOSYLATED AND IN COMPLEX WITH ITS LIGAND HAEM
Keywords keywords	BETA PROPELLER, HAEM BINDING AND TRANSPORT, IRON METABOLISM, BINDING PROTEIN; BINDING 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.

1qhu__assembly_1__model_1

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

Download this curve (.dat)

1qhu__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1qhu__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	23.93 Å
Rg (electron density)	23.21 Å
Total Rg	24.07 Å
Atom count	3253
Residues	398
Excluded volume	57454 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1qhu__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 (6)

Entity 1 Entity 1 polymer

Description description	PROTEIN (HEMOPEXIN)
Molecular weight formula_weight	51832.3 kDa
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	3463

MVKASGIPIALGVWGLCWSLATVNSVPLTSAHGNVTEGESGTKPEADVIEQCSDGWSFDATTLDDNGTMLFFKDEFVWKSHRGIRELISERWKNFIGPVDAAFRHGHTSVYLIKGDKVWVYTSEKNEKVYPKSLQDEFPGIPFPLDAAVECHRGECQDEGILFFQGNRKWFWDLTTGTKKERSWPAVGNCTSALRWLGRYYCFQGNQFLRFNPVSGEVPPGYPLDVRDYFLSCPGRGHRSSHRNSTQHGHESTRCDPDLVLSAMVSDNHGATYVFSGSHYWRLDTNRDGWHSWPIAHQWPQGPSTVDAAFSWEDKLYLIQDTKVYVFLTKGGYTLVNGYPKRLEKELGSPPVISLEAVDAAFVCPGSSRLHIMAGRRLWWLDLKSGAQATWTELPWPHEKVDGALCMEKPLGPNSCSTSGPNLYLIHGPNLYCYRHVDKLNAAKNLPQPQRVSRLLGCTH

Entity 2 Entity 2 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	SODIUM ION
Molecular weight formula_weight	23.0 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 4 Entity 4 non-polymer

Description description	PHOSPHATE ION
Molecular weight formula_weight	95.0 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 non-polymer

Description description	PROTOPORPHYRIN IX CONTAINING FE
Molecular weight formula_weight	616.5 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 6 Entity 6 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	210

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1qhua1
Class class	b — All beta proteins
Fold Fold fold	b.66 — 4-bladed beta-propeller
Superfamily Superfamily superfamily	b.66.1 — Hemopexin-like domain
Family Family family	b.66.1.1 — Hemopexin-like domain

Domain ID domain_id	d1qhua2
Class class	b — All beta proteins
Fold Fold fold	b.66 — 4-bladed beta-propeller
Superfamily Superfamily superfamily	b.66.1 — Hemopexin-like domain
Family Family family	b.66.1.1 — Hemopexin-like domain

CATH v4.4 (2 domains)

Domain ID domain_id	1qhuA01
Class class	2 — Mainly Beta
Architecture architecture	110 — 4 Propeller
Topology topology	10 — Hemopexin
Homologous superfamily homologous superfamily	10 — Hemopexin-like domain

Domain ID domain_id	1qhuA02
Class class	2 — Mainly Beta
Architecture architecture	110 — 4 Propeller
Topology topology	10 — Hemopexin
Homologous superfamily homologous superfamily	10 — Hemopexin-like domain

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Unit-cell length a length_a	44.680 Å
Unit-cell length b length_b	61.950 Å
Unit-cell length c length_c	83.290 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	93.21 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	2

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

Resolution resolution	2.300 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.2010
R_work r_work	0.2070
R_free r_free	0.2890

MAMMALIAN BLOOD SERUM HAEMOPEXIN DEGLYCOSYLATED AND IN COMPLEX WITH ITS LIGAND HAEM

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

PROTEIN (HEMOPEXIN)

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

1qhu__assembly_1__model_1

1qhu__assembly_1__model_1 | I(q)

1qhu__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 (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

MAMMALIAN BLOOD SERUM HAEMOPEXIN DEGLYCOSYLATED AND IN COMPLEX WITH ITS LIGAND HAEM

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

PROTEIN (HEMOPEXIN)

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

1qhu__assembly_1__model_1

1qhu__assembly_1__model_1 | I(q)

1qhu__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 (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)