1DQA

COMPLEX OF THE CATALYTIC PORTION OF HUMAN HMG-COA REDUCTASE WITH HMG, COA, AND NADP+


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.168 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Crystal structure of the catalytic portion of human HMG-CoA reductase: insights into regulation of activity and catalysis.

Istvan, E.S.Palnitkar, M.Buchanan, S.K.Deisenhofer, J.

(2000) EMBO J 19: 819-830

  • DOI: 10.1093/emboj/19.5.819
  • Primary Citation of Related Structures:  
    1DQ9, 1DQ8, 1DQA

  • PubMed Abstract: 
  • 3-hydroxy-3-methylglutaryl-CoA reductase (HMGR) catalyzes the formation of mevalonate, the committed step in the biosynthesis of sterols and isoprenoids. The activity of HMGR is controlled through synthesis, degradation and phosphorylation to maintain the concentration of mevalonate-derived products ...

    3-hydroxy-3-methylglutaryl-CoA reductase (HMGR) catalyzes the formation of mevalonate, the committed step in the biosynthesis of sterols and isoprenoids. The activity of HMGR is controlled through synthesis, degradation and phosphorylation to maintain the concentration of mevalonate-derived products. In addition to the physiological regulation of HMGR, the human enzyme has been targeted successfully by drugs in the clinical treatment of high serum cholesterol levels. Three crystal structures of the catalytic portion of human HMGR in complexes with HMG-CoA, with HMG and CoA, and with HMG, CoA and NADP(+), provide a detailed view of the enzyme active site. Catalytic portions of human HMGR form tight tetramers. The crystal structure explains the influence of the enzyme's oligomeric state on the activity and suggests a mechanism for cholesterol sensing. The active site architecture of human HMGR is different from that of bacterial HMGR; this may explain why binding of HMGR inhibitors to bacterial HMGRs has not been reported.


    Organizational Affiliation

    Howard Hughes Medical Institute, Department of Biochemistry, University of Texas Southwestern Medical Center at Dallas, TX 75235-9050, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (HMG-COA REDUCTASE)ABCD467Homo sapiensMutation(s): 1 
Gene Names: HMGCR
EC: 1.1.1.34
Find proteins for P04035 (Homo sapiens)
Explore P04035 
Go to UniProtKB:  P04035
NIH Common Fund Data Resources
PHAROS  P04035
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
COA
Query on COA

Download CCD File 
A, B, C, D
COENZYME A
C21 H36 N7 O16 P3 S
RGJOEKWQDUBAIZ-IBOSZNHHSA-N
 Ligand Interaction
NAP
Query on NAP

Download CCD File 
A, B, C, D
NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
C21 H28 N7 O17 P3
XJLXINKUBYWONI-NNYOXOHSSA-N
 Ligand Interaction
MAH
Query on MAH

Download CCD File 
A, B, C, D
3-HYDROXY-3-METHYL-GLUTARIC ACID
C6 H10 O5
NPOAOTPXWNWTSH-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
MAHKi:  23.5   nM  BindingDB
MAHIC50:  4000   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.168 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 73.918α = 90
b = 172.63β = 117.5
c = 73.991γ = 90
Software Package:
Software NamePurpose
EPMRphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-03-08
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-03-14
    Changes: Database references