SAXSdb — 2mhr

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

MYOHEMERYTHRIN

Themiste zostericola

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	AZIDE ION × 1 SULFATE ION × 3 MU-OXO-DIIRON × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	HEMTM_THEZO
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–118； UniProt 1–118

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	2mhr
Deposition date deposition_date	1987-04-20
Structure title title	STRUCTURE OF MYOHEMERYTHRIN IN THE AZIDOMET STATE AT 1.7(SLASH)1.3 ANGSTROMS RESOLUTION
Keywords keywords	OXYGEN BINDING; OXYGEN BINDING
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.

2mhr__assembly_1__model_1

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

Download this curve (.dat)

2mhr__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2mhr__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	14.94 Å
Rg (electron density)	13.80 Å
Total Rg	15.04 Å
Atom count	1947
Residues	118
Excluded volume	17618 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2mhr__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 (5)

Entity 1 Entity 1 polymer

Description description	MYOHEMERYTHRIN
Molecular weight formula_weight	13800.7 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	2177

GWEIPEPYVWDESFRVFYEQLDEEHKKIFKGIFDCIRDNSAPNLATLVKVTTNHFTHEEAMMDAAKYSEVVPHKKMHKDFLEKIGGLSAPVDAKNVDYCKEWLVNHIKGTDFKYKGKL

Source Source

Source organism organism	Themiste zostericola
NCBI taxonomy ID ncbi_taxonomy_id	6437

Entity 2 Entity 2 non-polymer

Description description	AZIDE ION
Molecular weight formula_weight	42.0 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 4 Entity 4 non-polymer

Description description	MU-OXO-DIIRON
Molecular weight formula_weight	127.7 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	157

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d2mhra_
Class class	a — All alpha proteins
Fold Fold fold	a.24 — Four-helical up-and-down bundle
Superfamily Superfamily superfamily	a.24.4 — Hemerythrin-like
Family Family family	a.24.4.1 — Hemerythrin-like

CATH v4.4 (1 domains)

Domain ID domain_id	2mhrA00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	120 — Four Helix Bundle (Hemerythrin (Met), subunit A)
Homologous superfamily homologous superfamily	50 — Hemerythrin-like

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7. Citations (10)

Structure of myohemerythrin in the azidomet state at 1.7/1.3 A resolution.

J.Mol.Biol. (1987)

PMID: 3681996 · DOI: 10.1016/0022-2836(87)90124-0 PRIMARY

Location of Iron and Sulfur Atoms in Myohemerythrin from Anomalous-Scattering Measurements

Acta Crystallogr.,Sect.B (1987)

General Density Function Corresponding to X-Ray Diffraction with Anomalous Scattering Included

Acta Crystallogr.,Sect.A (1987)

Description of Overall Anisotropy in Diffraction from Macromolecular Crystals

Acta Crystallogr.,Sect.A (1987)

Structural Heterogeneity in Protein Crystals

Biochemistry (1986)

Mobility and Heterogeneity in Protein Structure as Seen by Diffraction

Biomolecular Stereodynamics III. Proceedings of the Fourth Conversation in the Discipline of Biomolecular Stereodynamics (1986)

Influence of Solvent Accessibility and Intermolecular Contacts on Atomic Mobilities in Hemerythrins

Proc.Natl.Acad.Sci.USA (1985)

Structure and Function of Hemerythrins

Respiratory Pigments in Animals (1985)

Structure of the Active Center of Hemerythrins

Life Chem.Rep.,Suppl.Ser. (1983)

Tertiary Structure of Myohemerythrin at Low Resolution

Proc.Natl.Acad.Sci.USA (1975)

Unit-cell length a length_a	41.660 Å
Unit-cell length b length_b	80.170 Å
Unit-cell length c length_c	37.820 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	4

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

Resolution resolution	1.300 Å
Low-resolution limit resolution_low	10.000 Å
R factor r_factor	0.1580
R_work r_work	—
R_free r_free	—

STRUCTURE OF MYOHEMERYTHRIN IN THE AZIDOMET STATE AT 1.7(SLASH)1.3 ANGSTROMS RESOLUTION

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

MYOHEMERYTHRIN

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

2mhr__assembly_1__model_1

2mhr__assembly_1__model_1 | I(q)

2mhr__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (10)

STRUCTURE OF MYOHEMERYTHRIN IN THE AZIDOMET STATE AT 1.7(SLASH)1.3 ANGSTROMS RESOLUTION

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

MYOHEMERYTHRIN

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

2mhr__assembly_1__model_1

2mhr__assembly_1__model_1 | I(q)

2mhr__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (10)