1K2U

Structure of rat brain nNOS heme domain complexed with S-ethyl-N-[4-(trifluoromethyl)phenyl] isothiourea

Structural Biology Knowledgebase: 1K2U SBKB.org


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.261
  • R-Value Work: 0.227

Literature

Macromolecules
Sequence Display for 1K2U

Classification: OXIDOREDUCTASE

Total Structure Weight: 99506.92

Macromolecule Entities
Molecule Chains Length Organism Details
nitric-oxide synthase A, B 419 Rattus norvegicus EC#: 1.14.13.39 IUBMB
Fragment: heme-containing oxygenase domain
Gene Name(s): Nos1 Bnos
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG

Small Molecules
Ligands 5 Unique
ID Chains Name / Formula / InChI Key 2D Diagram 3D Interactions
HEM
Query on HEM

A, B PROTOPORPHYRIN IX CONTAINING FE
HEME (Synonym)
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
TFM
Query on TFM

A, B S-ETHYL-N-[4-(TRIFLUOROMETHYL)PHENYL]ISOTHIOUREA
C10 H11 F3 N2 S
LCMOXIFARISMOH-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
H4B
Query on H4B

A, B 5,6,7,8-TETRAHYDROBIOPTERIN
C9 H15 N5 O3
FNKQXYHWGSIFBK-RPDRRWSUSA-N
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)
ACT
Query on ACT

A, B ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
External Ligand Annotations
ID Binding Affinity (Sequence Identity %)
H4B Kd: 1120 nM (96) BindingDB

N/A in BindingMoad
N/A in PDBbind

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.261
  • R-Value Work: 0.227
  • Space Group: P 21 21 21
  • Electron Density Server: EDS EDS

Unit Cell:

Length (Å) Angle (°)
a = 51.72 α = 90.00
b = 110.66 β = 90.00
c = 164.91 γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 2001-09-28
  • Released Date: 2003-03-04
  • Deposition author(s): Li, H., Martasek, P., Masters, B.S.S., Poulos, T.L., Raman, C.S.

Revision History

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