1N43

Streptavidin Mutant N23A with biotin at 1.89A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.301
  • R-Value Work: 0.192

Literature

Macromolecules
Sequence Display for 1N43

Classification: Biotin-binding protein

Total Structure Weight: 53930.49

Macromolecule Entities
Molecule Chains Length Organism Details
Streptavidin A, B, C, D 127 Streptomyces avidinii Fragment: core streptavidin, residues 13-139
Mutation: N23A
Gene Name(s):
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG

Small Molecules
Ligands 1 Unique
ID Chains Name / Formula / InChI Key 2D Diagram 3D Interactions
BTN
Query on BTN

A, B, C, D BIOTIN
C10 H16 N2 O3 S
YBJHBAHKTGYVGT-ZKWXMUAHSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
External Ligand Annotations
ID Binding Affinity (Sequence Identity %)
BTN Kd: 1 nM (99) BindingDB
ΔH: -123 - -66.9 kJ/mol (98 - 100) BindingDB

N/A in BindingMoad
Kd: ~0.028 nM  PDBbind

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.301
  • R-Value Work: 0.192
  • Space Group: P 1 21 1

Unit Cell:

Length (Å) Angle (°)
a = 52.18 α = 90.00
b = 97.20 β = 112.60
c = 51.58 γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 2002-10-30
  • Released Date: 2003-09-02
  • Deposition author(s): Le Trong, I., Freitag, S., Klumb, L.A., Chu, V., Stayton, P.S., Stenkamp, R.E.

Revision History

  • 2008-04-28
    Type: Version format compliance
  • 2011-07-13
    Type: Version format compliance