1QAX

TERNARY COMPLEX OF PSEUDOMONAS MEVALONII HMG-COA REDUCTASE WITH HMG-COA AND NAD+


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.215 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Substrate-induced closure of the flap domain in the ternary complex structures provides insights into the mechanism of catalysis by 3-hydroxy-3-methylglutaryl-CoA reductase.

Tabernero, L.Bochar, D.A.Rodwell, V.W.Stauffacher, C.V.

(1999) Proc.Natl.Acad.Sci.USA 96: 7167-7171

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • 3-hydroxy-3-methylglutaryl-CoA (HMG-CoA) reductase is the rate-limiting enzyme and the first committed step in the biosynthesis of cholesterol in mammals. We have determined the crystal structures of two nonproductive ternary complexes of HMG-CoA red ...

    3-hydroxy-3-methylglutaryl-CoA (HMG-CoA) reductase is the rate-limiting enzyme and the first committed step in the biosynthesis of cholesterol in mammals. We have determined the crystal structures of two nonproductive ternary complexes of HMG-CoA reductase, HMG-CoA/NAD+ and mevalonate/NADH, at 2.8 A resolution. In the structure of the Pseudomonas mevalonii apoenzyme, the last 50 residues of the C terminus (the flap domain), including the catalytic residue His381, were not visible. The structures of the ternary complexes reported here reveal a substrate-induced closing of the flap domain that completes the active site and aligns the catalytic histidine proximal to the thioester of HMG-CoA. The structures also present evidence that Lys267 is critically involved in catalysis and provide insights into the catalytic mechanism.


    Organizational Affiliation

    Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (3-HYDROXY-3-METHYLGLUTARYL-COENZYME A REDUCTASE)
A, B
428Pseudomonas mevaloniiMutation(s): 0 
Gene Names: mvaA
EC: 1.1.1.88
Find proteins for P13702 (Pseudomonas mevalonii)
Go to UniProtKB:  P13702
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HMG
Query on HMG

Download SDF File 
Download CCD File 
A
3-HYDROXY-3-METHYLGLUTARYL-COENZYME A
(S)-HMG-COA
C27 H39 N7 O20 P3 S
CABVTRNMFUVUDM-VRHQGPGLSA-I
 Ligand Interaction
NAD
Query on NAD

Download SDF File 
Download CCD File 
B
NICOTINAMIDE-ADENINE-DINUCLEOTIDE
C21 H27 N7 O14 P2
BAWFJGJZGIEFAR-NNYOXOHSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.215 
  • Space Group: I 41 3 2
Unit Cell:
Length (Å)Angle (°)
a = 228.700α = 90.00
b = 228.700β = 90.00
c = 228.700γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DENZOdata reduction
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-06-18
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-04
    Type: Refinement description