1LOK

The 1.20 Angstrom Resolution Crystal Structure of the Aminopeptidase from Aeromonas proteolytica Complexed with Tris: A Tale of Buffer Inhibition

Structural Biology Knowledgebase: 1LOK SBKB.org


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.2 Å
  • R-Value Free: 0.198
  • R-Value Work: 0.158

Literature

Macromolecules
Sequence Display for 1LOK

Classification: HYDROLASE

Total Structure Weight: 31761.58

Macromolecule Entities
Molecule Chains Length Organism Details
Bacterial leucyl aminopeptidase A 291 Vibrio proteolyticus EC#: 3.4.11.10 IUBMB
Gene Name(s):
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG

Small Molecules
Ligands 4 Unique
ID Chains Name / Formula / InChI Key 2D Diagram 3D Interactions
TRS
Query on TRS

A 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
TRIS BUFFER (Synonym)
C4 H12 N O3
LENZDBCJOHFCAS-UHFFFAOYSA-O
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
ZN
Query on ZN

A ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
SCN
Query on SCN

A THIOCYANATE ION
C N S
ZMZDMBWJUHKJPS-UHFFFAOYSA-M
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
NA
Query on NA

A SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.2 Å
  • R-Value Free: 0.198
  • R-Value Work: 0.158
  • Space Group: P 61 2 2

Unit Cell:

Length (Å) Angle (°)
a = 108.34 α = 90.00
b = 108.34 β = 90.00
c = 93.52 γ = 120.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 2002-05-06
  • Released Date: 2002-11-27
  • Deposition author(s): Desmarais, W.T., Bienvenue, D.L., Bzymek, K.P., Holz, R.C., Petsko, G.A., Ringe, D.

Revision History

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