SAXSdb — 1h9v

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

LOW AFFINITY IMMUNOGLOBULIN GAMMA FC RECEPTOR II-A

HOMO SAPIENS

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 37–208	Fragment：IMMUNOGLOBULIN G BINDING DOMAIN RESIDUE 5-177	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：pH 5.5；0.2M NAOAC PH 4.6, 26% PEG 8000	Resolution 3.00 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.

Other PDB	Difference from Current Entry 1H9V	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
1FCG ECTODOMAIN OF HUMAN FC GAMMA RECEPTOR, FCGRIIA Deposited 1999-04-07	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 34–207（174 aa） Fragment：EXTRACELLULAR DOMAINS	Mutation：S88F, R134H	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 5.6；HANGING DROP VAPOUR DIFFUSION WITH EQUAL VOLUMES OF FC(GAMMA)RIIA AT 6 MG/ML AND MOTHER LIQUOR (0.2 M AMMONIUM ACETATE, 30% W/V PEG 4000, 0.1 M SODIUM CITRATE PH 5.6) MIXED IN 3 MICRO L DROPLETS AND ALLOWED TO EQUILIBRATE AT 22 C FOR 3-9 DAYS.	Resolution 2.00 Å R-free 0.242
3D5O Structural recognition and functional activation of FcrR by innate pentraxins Deposited 2008-05-16	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain F 37–207（171 aa）	Not recorded	SO4 SULFATE ION × 16 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 5 GOL GLYCEROL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；293 K；2.0 M NH4SO4, 5% iso-propanol, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 2.80 Å R-free 0.279
3RY4 1.5 Angstrom resolution structure of glycosylated fcgammariia (low-responder polymorphism) Deposited 2011-05-11	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 37–206（170 aa） Fragment：EXTRACELLULAR DOMAIN, residues 37-206	Mutation：S88P	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 GOL GLYCEROL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION；pH 5.6；30% (W/V) PEG 4000, 0.2M AMMONIUM ACETATE, 0.1M SODIUM CITRATE, PH 5.60, VAPOR DIFFUSION, TEMPERATURE 291.0K	Resolution 1.50 Å R-free 0.230
3RY5 Three-dimensional structure of glycosylated fcgammariia (high-responder polymorphism) Deposited 2011-05-11	Different construct Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 37–206（170 aa） Fragment：EXTRACELLULAR DOMAIN, residues 114-327	Mutation：H134R	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION；pH 7.5；30% (W/V) PEG 4000, 0.2M AMMONIUM SULFATE, PH 7.50, VAPOR DIFFUSION, TEMPERATURE 291.0K	Resolution 2.30 Å R-free 0.275
3RY6 Complex of fcgammariia (CD32) and the FC of human IGG1 Deposited 2011-05-11	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 40–206（167 aa） Fragment：UNP residues 40-206	Not recorded	GOL GLYCEROL × 4 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION；pH 7.4；20% (W/V) PEG 3350, 5MM TRIS, 0.15M NACL, 2MM MOPS, 0.2M TRI-POTASSIUM ACETATE, PH 7.40, VAPOR DIFFUSION, TEMPERATURE 291.0K	Resolution 3.80 Å R-free 0.426
8CHA Fc gamma RIIa 27W/131H variant ectodomain Deposited 2023-02-07	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–209（209 aa）	Mutation：Q27W	FLC CITRATE ANION × 1 PO4 PHOSPHATE ION × 3 16P 3,6,9,12,15,18-HEXAOXAICOSANE × 1 PGE TRIETHYLENE GLYCOL × 1 DXE 1,2-DIMETHOXYETHANE × 1 FWN 2-[2-(2-ethoxyethoxy)ethoxy]ethanol × 1 NA SODIUM ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.2；293.15 K；0.1M sodium phosphate citrate, pH4.2, 41% (v/v) PEG 300	Resolution 1.81 Å R-free 0.225
9MCX CRYSTAL STRUCTURE OF HUMAN IGG1 FC FRAGMENT-FC-GAMMA RECEPTOR IIA COMPLEX H131 VARIANT Deposited 2024-12-05	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 37–209（173 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；294 K；25% PEG 2000 MME, 0.1 M HEPES pH 7.5	Resolution 2.38 Å R-free 0.234
9N5P CRYSTAL STRUCTURE OF HUMAN IGG2 FC FRAGMENT-FC-GAMMA RECEPTOR IIA COMPLEX H131 VARIANT Deposited 2025-02-04	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 37–209（173 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；294 K；0.1 M HEPES pH 7.5, 25% PEG 2000 MME	Resolution 2.01 Å R-free 0.232

8 other PDB entries and 8 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	FCGA_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–172； UniProt 37–208

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	1h9v
Deposition date deposition_date	2001-03-21
Structure title title	Human Fc-gamma-Receptor IIa (FcgRIIa), monoclinic
Keywords keywords	IMMUNE SYSTEM, MEMBRANE PROTEIN, FCR, FC-RECEPTOR, IMMUNOGLOBULIN, FCGR, FC-GAMMA-R; IMMUNE SYSTEM, MEMBRANE 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	19.05 Å
Radius of gyration Rg (electron density) rg_electron	18.23 Å
Forward intensity I(0) i0	7099960.00
Molecular weight molecular_weight	19320.0 kDa
Excluded volume excluded_volume	24072 Å³
Envelope volume envelope_volume	29369 Å³
Hydration-shell volume shell_volume	14267 Å³
Envelope diameter envelope_diameter	65.0 Å
Shell Rg shell_rg	23.19 Å
Envelope Rg envelope_rg	18.43 Å
Shape Rg shape_rg	18.21 Å
Total Rg total_rg	19.10 Å
Total atoms total_atoms	1364
Residues n_residues	172
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	64.8 Å
Rg (real space) rg_real	19.06 Å
Rg uncertainty (real space) rg_real_error	0.34 Å
I(0) (real space) i0_real	7.1000e+06
I(0) uncertainty (real space) i0_real_error	8.1610e+04
Rg (reciprocal space) rg_reciprocal	19.06 Å
I(0) (reciprocal space) i0_reciprocal	7100000.0000
Solution quality estimate total_estimate	0.8816
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	2
Primary peak position r_peak_primary	18.9 Å
Skewness Skewness skewness	0.298
Kurtosis Kurtosis kurtosis	-0.483
Angular range angular_range	— – 0.4150 Å⁻¹
Current regularization parameter α current_alpha	0.0001
Highest regularization parameter α highest_alpha	1938000.0000
Real-space data points n_real_points	73
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.851; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.905; Smooth: 0.999

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (1)

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7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1h9va1
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.1 — Immunoglobulin
Family Family family	b.1.1.4 — I set domains

Domain ID domain_id	d1h9va2
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.1 — Immunoglobulin
Family Family family	b.1.1.4 — I set domains

CATH v4.4 (2 domains)

Domain ID domain_id	1h9vA01
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

Domain ID domain_id	1h9vA02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

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8. Citations (1)

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Unit-cell length a length_a	81.310 Å
Unit-cell length b length_b	50.000 Å
Unit-cell length c length_c	55.450 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	128.30 °
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	—

Resolution resolution	3.000 Å
Low-resolution limit resolution_low	— Å
R factor r_factor	—
R_work r_work	—
R_free r_free	—

Description description	LOW AFFINITY IMMUNOGLOBULIN GAMMA FC RECEPTOR II-A
Molecular weight formula_weight	19342.6 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	1364

Human Fc-gamma-Receptor IIa (FcgRIIa), monoclinic

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

LOW AFFINITY IMMUNOGLOBULIN GAMMA FC RECEPTOR II-A

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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

来源 Source

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)

来源生物 organism	HOMO SAPIENS
通用名 common_name	HUMAN
NCBI Class编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	ESCHERICHIA COLI

fit	/app/data/saxs_computation/h9/1h9v/1h9v.fit
pddf	/app/data/pr_computation/h9/1h9v/1h9v.pr.out
profile	/app/data/saxs_computation/h9/1h9v/1h9v.dat