6nla

Crystal structure of de novo designed metal-controlled dimer of B1 immunoglobulin-binding domain of Streptococcal Protein G (L12H, E15V, T16L, T18I, V29H, Y33H, N37L)-zinc

Method: X-RAY DIFFRACTION Dmax: 39.1 Å Quality: GOOD

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

Immunoglobulin G-binding protein G

Streptococcus

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 homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 303–357 Mutation:L12H, E15V, T16L, T18I, V29H, Y33H, N37L ZN ZINC ION × 4 CL CHLORIDE ION × 6 GOL GLYCEROL × 2 NA SODIUM ION × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;298 K;4M NaCl 0.1M HEPES pH 7.5 50mM MgCl2, 5mM zinc sulfate Resolution 1.34 Å R-free 0.128

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 2–56; UniProt 303–357

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 6nla

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 6nla
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2. Structure Basics 2. Structure Basics

Entry ID entry_id6nla
Deposition date deposition_date2019-01-08
Structure title titleCrystal structure of de novo designed metal-controlled dimer of B1 immunoglobulin-binding domain of Streptococcal Protein G (L12H, E15V, T16L, T18I, V29H, Y33H, N37L)-zinc
Keywords keywordsMetal-mediated dimer, B1 Domain of Streptococcal protein G, Immunoglobulin binding protein, DE NOVO PROTEIN; DE NOVO PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier12.12
Radius of gyration Rg (electron density) rg_electron10.69
Forward intensity I(0) i01062000.00
Molecular weight molecular_weight6597.0 kDa
Excluded volume excluded_volume8124 ų
Envelope volume envelope_volume8757 ų
Hydration-shell volume shell_volume7387 ų
Envelope diameter envelope_diameter37.1
Shell Rg shell_rg15.71
Envelope Rg envelope_rg10.96
Shape Rg shape_rg10.55
Total Rg total_rg12.38
Total atoms total_atoms452
Residues n_residues56
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 dmax39.1
Rg (real space) rg_real12.06
Rg uncertainty (real space) rg_real_error0.23
I(0) (real space) i0_real1.0620e+06
I(0) uncertainty (real space) i0_real_error1.1560e+04
Rg (reciprocal space) rg_reciprocal12.07
I(0) (reciprocal space) i0_reciprocal1062000.0000
Solution quality estimate total_estimate0.8841
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary14.3
Skewness Skewness skewness0.198
Kurtosis Kurtosis kurtosis-0.285
Angular range angular_range— – 0.5000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha167700.0000
Real-space data points n_real_points80
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.839; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.975

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

7. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

Domain ID domain_id6nlaA00
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily10

8. Citations (1)

9. Files and Curves (10)