1N4A

The Ligand Bound Structure of E.coli BtuF, the Periplasmic Binding Protein for Vitamin B12

Structural Biology Knowledgebase: 1N4A SBKB.org


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.0 Å
  • R-Value Free: 0.261
  • R-Value Work: 0.234

Literature

Macromolecules
Sequence Display for 1N4A

Classification: TRANSPORT PROTEIN

Total Structure Weight: 58992.63

Macromolecule Entities
Molecule Chains Length Organism Details
Vitamin B12 transport protein btuF A, B 252 Escherichia coli Mutation: M47M, M83M
Gene Name(s): btuF yadT b0158 JW0154
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG

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

A, B CO-CYANOCOBALAMIN
C63 H88 Co N14 O14 P
OEEKSCBDGPRZJZ-BYLSPCLQSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
Modified Residues 1 Unique
ID Chains Type Formula 2D Diagram Parent
MSE
Query on MSE
A, B L-PEPTIDE LINKING C5 H11 N O2 Se MET

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.0 Å
  • R-Value Free: 0.261
  • R-Value Work: 0.234
  • Space Group: P 21 21 2
  • Electron Density Server: EDS EDS

Unit Cell:

Length (Å) Angle (°)
a = 131.73 α = 90.00
b = 92.02 β = 90.00
c = 44.69 γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 2002-10-30
  • Released Date: 2003-03-11
  • Deposition author(s): Karpowich, N.K, Smith, P.C., Hunt, J.F., Northeast Structural Genomics Consortium (NESG)

Revision History

  • 2011-07-13
    Type: Version format compliance | Details: compliance with PDB Exchange Dictionary V4