SAXSdb — 1cqa

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

PROFILIN

Betula pendula

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count	Chain A； UniProt 1–133	Not recorded	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：pH 6；pH 6.0	Resolution 2.40 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

No other PDB entry for the same UniProt protein was found.

View Construct and Data Evidence

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

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	1cqa
Deposition date deposition_date	1996-07-26
Structure title title	BIRCH POLLEN PROFILIN
Keywords keywords	ACTIN-BINDING PROTEIN, ALLERGEN, CONTRACTILE PROTEIN; CONTRACTILE PROTEIN
Experimental Method method	X-RAY DIFFRACTION

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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier	14.85 Å
Radius of gyration Rg (electron density) rg_electron	13.40 Å
Forward intensity I(0) i0	3435930.00
Molecular weight molecular_weight	13198.0 kDa
Excluded volume excluded_volume	16596 Å³
Envelope volume envelope_volume	18221 Å³
Hydration-shell volume shell_volume	11645 Å³
Envelope diameter envelope_diameter	45.2 Å
Shell Rg shell_rg	19.03 Å
Envelope Rg envelope_rg	13.58 Å
Shape Rg shape_rg	13.40 Å
Total Rg total_rg	14.62 Å
Total atoms total_atoms	929
Residues n_residues	123
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	47.3 Å
Rg (real space) rg_real	14.73 Å
Rg uncertainty (real space) rg_real_error	0.31 Å
I(0) (real space) i0_real	3.4360e+06
I(0) uncertainty (real space) i0_real_error	4.1580e+04
Rg (reciprocal space) rg_reciprocal	14.74 Å
I(0) (reciprocal space) i0_reciprocal	3436000.0000
Solution quality estimate total_estimate	0.8787
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	2
Primary peak position r_peak_primary	20.4 Å
Skewness Skewness skewness	0.046
Kurtosis Kurtosis kurtosis	-0.336
Angular range angular_range	— – 0.5000 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	584300.0000
Real-space data points n_real_points	80
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.813; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.988; Smooth: 0.992

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (2)

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7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1cqaa_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.110 — Profilin-like
Superfamily Superfamily superfamily	d.110.1 — Profilin (actin-binding protein)
Family Family family	d.110.1.1 — Profilin (actin-binding protein)

CATH v4.4 (1 domains)

Domain ID domain_id	1cqaA00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	450 — Beta-Lactamase
Homologous superfamily homologous superfamily	30 — Dynein light chain 2a, cytoplasmic

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8. Citations (1)

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Unit-cell length a length_a	59.900 Å
Unit-cell length b length_b	59.900 Å
Unit-cell length c length_c	85.370 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	P 41 21 2
Space-group number int_tables_number	92
Crystal system crystal_system	—

Resolution resolution	2.400 Å
Low-resolution limit resolution_low	8.000 Å
R factor r_factor	—
R_work r_work	0.1780
R_free r_free	—

Description description	PROFILIN
Molecular weight formula_weight	14293.2 kDa
Source method src_method	man
Copy count entity_count	1

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	977

BIRCH POLLEN PROFILIN

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

PROFILIN

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

5. Crystallography and Experiment 5. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

6. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

来源 Source

Entity 2 Entity 2 water

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)

来源生物 organism	Betula pendula
通用名 common_name	European white birch
NCBI Class编号 ncbi_taxonomy_id	3505
宿主生物 host_organism	Escherichia coli

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	48

fit	/app/data/saxs_computation/cq/1cqa/1cqa.fit
pddf	/app/data/pr_computation/cq/1cqa/1cqa.pr.out
profile	/app/data/saxs_computation/cq/1cqa/1cqa.dat