3qsk

5 Histidine Variant of the anti-RNase A VHH in Complex with RNAse A

Method: X-RAY DIFFRACTION Dmax: 79.0 Å Quality: GOOD

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

Ribonuclease pancreatic

OrganismNot specified

UniProt P61823

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 heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 27–150 Not recorded Engineered 5 Histidine anti-RNase A Camelid VHH Antibody Domain Variant × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 5.5;293 K;25% PEG 3.350, 0.2M lithium sulfate monohydrate, 0.1M bis-tris, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K Resolution 1.75 Å R-free 0.246

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.

333 other PDB entries and 495 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name RNAS1_BOVIN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–124; UniProt 27–150

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 3qsk

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3qsk
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id3qsk
Deposition date deposition_date2011-02-21
Structure title title5 Histidine Variant of the anti-RNase A VHH in Complex with RNAse A
Keywords keywords;Antibody, Single Domain, Camelid, VHH, sdAb, RNase A, Ribonuclease A, pH, Sensitivity, Switch, Dependence, Linked, Equilibria, Equilibrium, Protein Engineering, Combinatorial, Histidine, Scanning, Phage Display, Dual-Function, Protein-Protein Interaction, Proton Binding, HYDROLASE-IMMUNE SYSTEM complex ;; HYDROLASE/IMMUNE SYSTEM
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier21.89
Radius of gyration Rg (electron density) rg_electron21.52
Forward intensity I(0) i014218100.00
Molecular weight molecular_weight26293.0 kDa
Excluded volume excluded_volume32002 ų
Envelope volume envelope_volume39114 ų
Hydration-shell volume shell_volume16590 ų
Envelope diameter envelope_diameter79.5
Shell Rg shell_rg26.50
Envelope Rg envelope_rg21.80
Shape Rg shape_rg21.47
Total Rg total_rg22.31
Total atoms total_atoms1838
Residues n_residues242
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 dmax79.0
Rg (real space) rg_real22.14
Rg uncertainty (real space) rg_real_error0.83
I(0) (real space) i0_real1.4220e+07
I(0) uncertainty (real space) i0_real_error2.1790e+05
Rg (reciprocal space) rg_reciprocal22.10
I(0) (reciprocal space) i0_reciprocal14220000.0000
Solution quality estimate total_estimate0.7868
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary20.1
Skewness Skewness skewness0.558
Kurtosis Kurtosis kurtosis-0.297
Angular range angular_range— – 0.3650 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha3941000.0000
Real-space data points n_real_points68
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.594; Stabil: 0.998; Sysdev: 1.000; Positv: 1.000; Valcen: 0.452; Smooth: 0.996

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd3qska_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.5 — RNase A-like
Superfamily Superfamily superfamilyd.5.1 — RNase A-like
Family Family familyd.5.1.1 — Ribonuclease A-like
Domain ID domain_idd3qskb_
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.1 — V set domains (antibody variable domain-like)

CATH v4.4 (2 domains)

Domain ID domain_id3qskA00
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology130 — P-30 Protein
Homologous superfamily homologous superfamily10 — Ribonuclease A-like domain
Domain ID domain_id3qskB00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins

8. Citations (1)

9. Files and Curves (10)