SAXSdb — 9pt0

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

Retinol-binding protein 2

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	(2E)-3-[5'-(dimethylamino)[2,2'-bithiophen]-5-yl]but-2-enal × 1 ACETATE ION × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RET2_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–133； UniProt 2–134

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	9pt0
Deposition date deposition_date	2025-07-27
Last revision last_revision	2025-10-01
Structure title title	Q108K:K40L:T51V:T53S:R58W:Y19W:L117E mutant of hCRBPII bound to fluorophore TD-1V-8
Keywords keywords	human cellular retinol binding protein II, hCRBPII, fluorescent protein, engineered protein, RETINOL BINDING PROTEIN; RETINOL 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.

9pt0__assembly_1__model_1

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

Download this curve (.dat)

9pt0__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9pt0__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	15.36 Å
Rg (electron density)	14.08 Å
Total Rg	15.31 Å
Atom count	1135
Residues	133
Excluded volume	19729 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9pt0__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 (4)

Entity 1 Entity 1 polymer

Description description	Retinol-binding protein 2
Molecular weight formula_weight	15634.5 kDa
Mutation mutation	Q108K:K40L:T51V:T53S:R58W:Y19W:L117E
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	1202

TRDQNGTWEMESNENFEGWMKALDIDFATRKIAVRLTQTLVIDQDGDNFKVKSTSTFWNYDVDFTVGVEFDEYTKSLDNRHVKALVTWEGDVLVCVQKGEKENRGWKKWIEGDKLYEELTCGDQVCRQVFKKK

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	(2E)-3-[5'-(dimethylamino)[2,2'-bithiophen]-5-yl]but-2-enal
Molecular weight formula_weight	277.4 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	ACETATE ION
Molecular weight formula_weight	59.0 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	62

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Unit-cell length a length_a	29.303 Å
Unit-cell length b length_b	66.469 Å
Unit-cell length c length_c	64.285 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.38 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	monoclinic

Resolution resolution	1.640 Å
Low-resolution limit resolution_low	33.230 Å
R factor r_factor	0.1791
R_work r_work	0.1745
R_free r_free	0.2225

Q108K:K40L:T51V:T53S:R58W:Y19W:L117E mutant of hCRBPII bound to fluorophore TD-1V-8

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

Retinol-binding protein 2

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

9pt0__assembly_1__model_1

9pt0__assembly_1__model_1 | I(q)

9pt0__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 (4)

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 water

7. Citations (1)

Q108K:K40L:T51V:T53S:R58W:Y19W:L117E mutant of hCRBPII bound to fluorophore TD-1V-8

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

Retinol-binding protein 2

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

9pt0__assembly_1__model_1

9pt0__assembly_1__model_1 | I(q)

9pt0__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 (4)

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 water

7. Citations (1)