Biological Assembly 1  

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Global Symmetry: Dihedral - D2  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 204456.66 
• Atom Count: 12071 
• Residue Count: 1868 
• Unique protein chains: 1

1HWK

COMPLEX OF THE CATALYTIC PORTION OF HUMAN HMG-COA REDUCTASE WITH ATORVASTATIN

• DOI: 10.2210/pdb1HWK/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): 1 


• Deposited: 2001-01-09 Released: 2001-05-11 
• Deposition Author(s): Istvan, E.S., Deisenhofer, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.22 Å
• R-Value Free: 0.235 
• R-Value Work: 0.212 

Literature

Structural mechanism for statin inhibition of HMG-CoA reductase.

Istvan, E.S., Deisenhofer, J.

(2001) Science 292: 1160-1164

• PubMed: 11349148 
• DOI: 10.1126/science.1059344
• Primary Citation of Related Structures:  
  1HWL, 1HWJ, 1HWI, 1HW9, 1HW8


• PubMed Abstract: 
  

HMG-CoA (3-hydroxy-3-methylglutaryl-coenzyme A) reductase (HMGR) catalyzes the committed step in cholesterol biosynthesis. Statins are HMGR inhibitors with inhibition constant values in the nanomolar range that effectively lower serum cholesterol levels and are widely prescribed in the treatment of hypercholesterolemia. We have determined structures of the catalytic portion of human HMGR complexed with six different statins. The statins occupy a portion of the binding site of HMG-CoA, thus blocking access of this substrate to the active site. Near the carboxyl terminus of HMGR, several catalytically relevant residues are disordered in the enzyme-statin complexes. If these residues were not flexible, they would sterically hinder statin binding.

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Organizational Affiliation: 

Department of Biochemistry, Howard Hughes Medical Institute, University of Texas Southwestern Medical Center at Dallas, TX 75390-9050, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
HMG-COA REDUCTASE	A, B, C, D	467	Homo sapiens	Mutation(s): 1  Gene Names: HMGCR EC: 1.1.1.34
Find proteins for P04035 (Homo sapiens) Go to Gene View: HMGCR Go to UniProtKB:  P04035

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
ADP	A, B, D	ADENOSINE-5'-DIPHOSPHATE C10 H15 N5 O10 P2 XTWYTFMLZFPYCI-KQYNXXCUSA-N
117	A, B, C, D	7-[2-(4-FLUORO-PHENYL)-5-ISOPROPYL-3-PHENYL-4-PHENYLCARBAMOYL-PYRROL-1-YL]- 3,5-DIHYDROXY-HEPTANOIC ACID ATORVASTATIN C33 H35 F N2 O5 XUKUURHRXDUEBC-KAYWLYCHSA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
117	EC50: 2.5 nM (91) BINDINGDB
117	IC50: 3.8 - 32100 nM (91) BINDINGDB
117	IC50: 8 nM BINDINGMOAD

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.22 Å
• R-Value Free: 0.235 
• R-Value Work: 0.212 
• Space Group: P 1 2₁ 1

Unit Cell:

Length (Å)	Angle (°)
a = 74.596	α = 90.00
b = 172.724	β = 117.73
c = 80.008	γ = 90.00

Software Package:

Software Name	Purpose
SCALEPACK	data scaling
CNS	phasing
DENZO	data reduction
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2001-01-09 
• Released Date: 2001-05-11 
• Deposition Author(s): Istvan, E.S., Deisenhofer, J.

Revision History 

• Version 1.0: 2001-05-11
  Type: Initial release
• Version 1.1: 2008-04-27
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance