1KOI

CRYSTAL STRUCTURE OF NITROPHORIN 4 FROM RHODNIUS PROLIXUS COMPLEXED WITH NITRIC OXIDE AT 1.08 A RESOLUTION

Structural Biology Knowledgebase: 1KOI SBKB.org


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.08 Å
  • R-Value Free: 0.147
  • R-Value Work: 0.115

Literature

Macromolecules
Sequence Display for 1KOI

Classification: TRANSPORT PROTEIN

Total Structure Weight: 20939.32

Macromolecule Entities
Molecule Chains Length Organism Details
NITROPHORIN 4 A 184 Rhodnius prolixus EC#: 1.7.6.1 IUBMB
Details: NITRIC OXIDE OCCUPIES THE SIXTH COORDINATION POSITION OF THE IRON. THE HEME IS DISORDERED BY A ROTATION OF 180 DEGREES AROUND THE CHA-FE-CHC AXIS. THE ONLY EVIDENCE OF THIS DISORDER IS THE APPEARANCE OF METHYL GROUPS CMB AND CMC AS VINYLS. THESE EXTRA ATOMS ARE CALLED CBBB AND CBCB.
Gene Name(s):
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG

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

A PROTOPORPHYRIN IX CONTAINING FE
HEME (Synonym)
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
NO
Query on NO

A NITRIC OXIDE
Nitrogen monoxide (Synonym)
N O
ODUCDPQEXGNKDN-UHFFFAOYAM
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.08 Å
  • R-Value Free: 0.147
  • R-Value Work: 0.115
  • Space Group: C 1 2 1
  • Electron Density Server: EDS EDS

Unit Cell:

Length (Å) Angle (°)
a = 70.15 α = 90.00
b = 42.42 β = 94.22
c = 52.94 γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 2001-05-03
  • Released Date: 2002-01-09
  • Deposition author(s): Roberts, S.A., Weichsel, A., Qiu, Y., Shelnutt, J.A., Walker, F.A., Montfort, W.R.
  • Previous versions: 1IKH

Revision History

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