2igg

DETERMINATION OF THE SOLUTION STRUCTURES OF DOMAINS II AND III OF PROTEIN G FROM STREPTOCOCCUS BY 1H NMR

Method: SOLUTION NMR Dmax: 29.2 Å Quality: REASONABLE

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

PROTEIN G

Streptococcus sp. GX7805

UniProt P19909

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 367–430 Not recorded No other associated polymer SOLUTION NMR mmCIF provides none of the parsed experimental conditions Resolution not provided

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.

76 other PDB entries and 116 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name SPG2_STRSG
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–64; UniProt 367–430

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.

SAXS scattering curve SAXS Profile

SAXS profile for 2igg

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 2igg
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2. Structure Basics 2. Structure Basics

Entry ID entry_id2igg
Deposition date deposition_date1992-08-26
Structure title titleDETERMINATION OF THE SOLUTION STRUCTURES OF DOMAINS II AND III OF PROTEIN G FROM STREPTOCOCCUS BY 1H NMR
Keywords keywordsIMMUNOGLOBULIN-BINDING PROTEIN; IMMUNOGLOBULIN-BINDING PROTEIN
Experimental Method methodSOLUTION NMR

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

Radius of gyration Rg (Guinier) rg_guinier11.56
Radius of gyration Rg (electron density) rg_electron11.86
Forward intensity I(0) i0489303000.00
Molecular weight molecular_weight188560.0 kDa
Excluded volume excluded_volume236080 ų
Envelope volume envelope_volume21177 ų
Hydration-shell volume shell_volume12067 ų
Envelope diameter envelope_diameter58.2
Shell Rg shell_rg20.79
Envelope Rg envelope_rg16.33
Shape Rg shape_rg11.79
Total Rg total_rg12.31
Total atoms total_atoms26271
Residues n_residues1728
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

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

Maximum dimension Dmax dmax29.2
Rg (real space) rg_real10.94
Rg uncertainty (real space) rg_real_error0.03
I(0) (real space) i0_real4.6660e+08
I(0) uncertainty (real space) i0_real_error2.9080e+06
Rg (reciprocal space) rg_reciprocal11.59
I(0) (reciprocal space) i0_reciprocal489300000.0000
Solution quality estimate total_estimate0.6836
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary14.4
Skewness Skewness skewness0.085
Kurtosis Kurtosis kurtosis-0.427
Angular range angular_range— – 0.5000 −1
Current regularization parameter α current_alpha4.0920
Highest regularization parameter α highest_alpha47170.0000
Real-space data points n_real_points80
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.001; Oscil: 0.990; Stabil: 0.972; Sysdev: 0.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (1)

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd2igga_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.15 — beta-Grasp (ubiquitin-like)
Superfamily Superfamily superfamilyd.15.7 — Immunoglobulin-binding domains
Family Family familyd.15.7.1 — Immunoglobulin-binding domains

CATH v4.4 (1 domains)

Domain ID domain_id2iggA00
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily10

8. Citations (2)

9. Files and Curves (10)