3ib4

The double mutant of Beta-2 microglobulin K58P-W60G

Method: X-RAY DIFFRACTION Dmax: 54.4 Å Quality: REASONABLE

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

Beta-2-microglobulin

Homo sapiens

UniProt P61769

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 21–119 Mutation:K58P, W60G Non-standard monomer:Yes (specific site not provided by mmCIF) PE4 2-{2-[2-(2-{2-[2-(2-ETHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHOXY]-ETHOXY}-ETHANOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 5.5;293 K;0.1M NaAcetate, 0.2M CH3COONH4, 20% Glycerol, 22% PEG 4000, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K Resolution 1.25 Å R-free 0.181

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.

1313 other PDB entries and 1998 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name B2MG_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 2–100; UniProt 21–119

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 3ib4

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3ib4
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3ib4
Deposition date deposition_date2009-07-15
Structure title titleThe double mutant of Beta-2 microglobulin K58P-W60G
Keywords keywords;amyloidosis, Beta-sandwich, Glycine, Proline, mutation, dialysis related amyloidosis, DE loop, Disease mutation, Disulfide bond, Glycation, Glycoprotein, Immune response, Immunoglobulin domain, MHC I, Pyrrolidone carboxylic acid, Secreted, IMMUNE SYSTEM ;; IMMUNE SYSTEM
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier15.37
Radius of gyration Rg (electron density) rg_electron14.13
Forward intensity I(0) i02978260.00
Molecular weight molecular_weight11865.0 kDa
Excluded volume excluded_volume14777 ų
Envelope volume envelope_volume17054 ų
Hydration-shell volume shell_volume10746 ų
Envelope diameter envelope_diameter53.6
Shell Rg shell_rg19.17
Envelope Rg envelope_rg14.53
Shape Rg shape_rg14.09
Total Rg total_rg15.33
Total atoms total_atoms836
Residues n_residues99
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 dmax54.4
Rg (real space) rg_real15.34
Rg uncertainty (real space) rg_real_error0.33
I(0) (real space) i0_real2.9780e+06
I(0) uncertainty (real space) i0_real_error3.5840e+04
Rg (reciprocal space) rg_reciprocal15.35
I(0) (reciprocal space) i0_reciprocal2978000.0000
Solution quality estimate total_estimate0.7108
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary53.7
Skewness Skewness skewness0.315
Kurtosis Kurtosis kurtosis-0.240
Angular range angular_range— – 0.5000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha546600.0000
Real-space data points n_real_points80
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.732; Stabil: 1.000; Sysdev: 0.368; Positv: 1.000; Valcen: 0.941; Smooth: 0.995

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd3ib4a_
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.2 — C1 set domains (antibody constant domain-like)

CATH v4.4 (1 domains)

Domain ID domain_id3ib4A00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins

8. Citations (1)

9. Files and Curves (10)