1ESA

DIRECT STRUCTURE OBSERVATION OF AN ACYL-ENZYME INTERMEDIATE IN THE HYDROLYSIS OF AN ESTER SUBSTRATE BY ELASTASE

Structural Biology Knowledgebase: 1ESA SBKB.org


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Observed: 0.190

Literature

Macromolecules
Sequence Display for 1ESA

Classification: HYDROLASE(SERINE PROTEINASE)

Total Structure Weight: 26160.39

Macromolecule Entities
Molecule Chains Length Organism Details
PORCINE PANCREATIC ELASTASE A 240 Sus scrofa EC#: 3.4.21.36 IUBMB
Mutation: D81N
Gene Name(s): CELA1 Gene View ELA1
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG

Small Molecules
Ligands 2 Unique
ID Chains Name / Formula / InChI Key 2D Diagram 3D Interactions
SO4
Query on SO4

A SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
CA
Query on CA

A CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Observed: 0.190
  • Space Group: P 21 21 21

Unit Cell:

Length (Å) Angle (°)
a = 51.37 α = 90.00
b = 58.21 β = 90.00
c = 74.83 γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 1994-02-04
  • Released Date: 1994-04-30
  • Deposition author(s): Ding, X., Rasmussen, B., Petsko, G.A., Ringe, D.

Revision History

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