SAXSdb — 4m2o

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

Recoverin

Bos taurus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	CALCIUM ION × 1 water × 1	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 4	CALCIUM ION × 4 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RECO_BOVIN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–196； UniProt 2–197

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	4m2o
Deposition date deposition_date	2013-08-05
Structure title title	Crystal structure of a non-myristoylated C39A recoverin mutant with one calcium ion bound to EF-hand 3
Keywords keywords	;Calcium binding protein, EF hand, Neuronal Calcium Sensing (NCS) family protein, Inhibits rhodopsin kinase, Rhodopsin kinase, Retina, METAL BINDING PROTEIN ;; METAL 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.

4m2o__assembly_1__model_1

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

Download this curve (.dat)

4m2o__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4m2o__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	18.11 Å
Rg (electron density)	16.97 Å
Total Rg	18.02 Å
Atom count	1561
Residues	191
Excluded volume	27876 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4m2o__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`4m2o__assembly_2__model_1`	tetrameric （4）	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	Recoverin
Molecular weight formula_weight	22573.3 kDa
Mutation mutation	C39A
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	1767

GNSKSGALSKEILEELQLNTKFTEEELSSWYQSFLKEAPSGRITRQEFQTIYSKFFPEADPKAYAQHVFRSFDANSDGTLDFKEYVIALHMTSAGKTNQKLEWAFSLYDVDGNGTISKNEVLEIVTAIFKMISPEDTKHLPEDENTPEKRAEKIWGFFGKKDDDKLTEKEFIEGTLANKEILRLIQFEPQKVKEKL

Source Source

Source organism organism	Bos taurus
Common name common_name	cow
NCBI taxonomy ID ncbi_taxonomy_id	9913
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 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	164

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6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d4m2oa_
Class class	a — All alpha proteins
Fold Fold fold	a.39 — EF Hand-like
Superfamily Superfamily superfamily	a.39.1 — EF-hand
Family Family family	a.39.1.5 — Calmodulin-like

CATH v4.4 (2 domains)

Domain ID domain_id	4m2oA01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	238 — Recoverin; domain 1
Homologous superfamily homologous superfamily	10 — EF-hand

Domain ID domain_id	4m2oA02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	238 — Recoverin; domain 1
Homologous superfamily homologous superfamily	10 — EF-hand

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Unit-cell length a length_a	84.050 Å
Unit-cell length b length_b	84.050 Å
Unit-cell length c length_c	58.990 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	I 4
Space-group number int_tables_number	79
Crystal system crystal_system	—

Resolution resolution	1.500 Å
Low-resolution limit resolution_low	31.700 Å
R factor r_factor	0.1860
R_work r_work	0.1860
R_free r_free	0.1970

Crystal structure of a non-myristoylated C39A recoverin mutant with one calcium ion bound to EF-hand 3

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

Recoverin

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

4m2o__assembly_1__model_1

4m2o__assembly_1__model_1 | I(q)

4m2o__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

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Crystal structure of a non-myristoylated C39A recoverin mutant with one calcium ion bound to EF-hand 3

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

Recoverin

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

4m2o__assembly_1__model_1

4m2o__assembly_1__model_1 | I(q)

4m2o__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

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

CATH v4.4 (2 domains)

7. Citations (1)