1ld5

STRUCTURE OF BPTI MUTANT A16V

Method: SOLUTION NMR Dmax: 44.2 Å Quality: GOOD

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

PANCREATIC TRYPSIN INHIBITOR

Bos taurus

UniProt P00974

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 36–93 Mutation:A16V No other associated polymer SOLUTION NMR NMR measurement conditions:pH 3.1;298 K;Ionic strength (raw mmCIF value) 0;Pressure ambient NMR sample composition:4mM BPTI_A16V | 90% H2O/10% D2O 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.

123 other PDB entries and 265 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name BPT1_BOVIN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–58; UniProt 36–93

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 1ld5

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1ld5
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1ld5
Deposition date deposition_date2002-04-08
Structure title titleSTRUCTURE OF BPTI MUTANT A16V
Keywords keywordsBPTI, Kunitz fold, Hydrolase Inhibitor; Hydrolase Inhibitor
Experimental Method methodSOLUTION NMR

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

Radius of gyration Rg (Guinier) rg_guinier11.29
Radius of gyration Rg (electron density) rg_electron11.18
Forward intensity I(0) i068411800.00
Molecular weight molecular_weight65616.0 kDa
Excluded volume excluded_volume80920 ų
Envelope volume envelope_volume13867 ų
Hydration-shell volume shell_volume9521 ų
Envelope diameter envelope_diameter47.3
Shell Rg shell_rg18.03
Envelope Rg envelope_rg13.38
Shape Rg shape_rg11.09
Total Rg total_rg11.76
Total atoms total_atoms9020
Residues n_residues580
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 dmax44.2
Rg (real space) rg_real11.34
Rg uncertainty (real space) rg_real_error0.42
I(0) (real space) i0_real6.8410e+07
I(0) uncertainty (real space) i0_real_error8.0190e+05
Rg (reciprocal space) rg_reciprocal11.34
I(0) (reciprocal space) i0_reciprocal68410000.0000
Solution quality estimate total_estimate0.7903
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary12.9
Skewness Skewness skewness0.480
Kurtosis Kurtosis kurtosis0.048
Angular range angular_range— – 0.5000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha82620.0000
Real-space data points n_real_points80
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.567; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.587; Smooth: 0.982

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_idd1ld5a_
Class classg — Small proteins
Fold Fold foldg.8 — BPTI-like
Superfamily Superfamily superfamilyg.8.1 — BPTI-like
Family Family familyg.8.1.1 — Small Kunitz-type inhibitors & BPTI-like toxins

CATH v4.4 (1 domains)

Domain ID domain_id1ld5A00
Class class4 — Few Secondary Structures
Architecture architecture10 — Irregular
Topology topology410 — Factor Xa Inhibitor
Homologous superfamily homologous superfamily10 — Pancreatic trypsin inhibitor Kunitz domain

8. Citations (2)

9. Files and Curves (10)