PMID- 10700284
OWN - NLM
STAT- MEDLINE
DCOM- 20000407
LR  - 20131121
IS  - 1072-8368 (Print)
IS  - 1072-8368 (Linking)
VI  - 7
IP  - 3
DP  - 2000 Mar
TI  - Crystal structures of homoserine dehydrogenase suggest a novel catalytic
      mechanism for oxidoreductases.
PG  - 238-44
AB  - The structure of the antifungal drug target homoserine dehydrogenase (HSD) was
      determined from Saccharomyces cerevisiae in apo and holo forms, and as a ternary 
      complex with bound products, by X-ray diffraction. The three forms show that the 
      enzyme is a dimer, with each monomer composed of three regions, the
      nucleotide-binding region, the dimerization region and the catalytic region. The 
      dimerization and catalytic regions have novel folds, whereas the fold of the
      nucleotide-binding region is a variation on the Rossmann fold. The novel folds
      impose a novel composition and arrangement of active site residues when compared 
      to all other currently known oxidoreductases. This observation, in conjunction
      with site-directed mutagenesis of active site residues and steady-state kinetic
      measurements, suggest that HSD exhibits a new variation on dehydrogenase
      chemistry.
FAU - DeLaBarre, B
AU  - DeLaBarre B
AD  - Antimicrobial Research Centre and Department of Biochemistry, McMaster
      University, 1200 Main Street West, Hamilton, Ontario, Canada L8N 3Z5.
FAU - Thompson, P R
AU  - Thompson PR
FAU - Wright, G D
AU  - Wright GD
FAU - Berghuis, A M
AU  - Berghuis AM
LA  - eng
SI  - PDB/1EBF
SI  - PDB/1EBU
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Nat Struct Biol
JT  - Nature structural biology
JID - 9421566
RN  - 0 (Apoenzymes)
RN  - 0 (Cations)
RN  - 0 (Holoenzymes)
RN  - 0 (Metals)
RN  - 0U46U6E8UK (NAD)
RN  - 6KA95X0IVO (Homoserine)
RN  - 7YNJ3PO35Z (Hydrogen)
RN  - EC 1.1.1.3 (Homoserine Dehydrogenase)
SB  - IM
MH  - Apoenzymes/chemistry/genetics/metabolism
MH  - Binding Sites
MH  - Catalysis
MH  - Catalytic Domain
MH  - Cations/metabolism
MH  - Crystallography, X-Ray
MH  - Dimerization
MH  - Holoenzymes/chemistry/genetics/metabolism
MH  - Homoserine/metabolism
MH  - Homoserine Dehydrogenase/*chemistry/genetics/*metabolism
MH  - Hydrogen/metabolism
MH  - Metals/metabolism
MH  - *Models, Chemical
MH  - Models, Molecular
MH  - Molecular Sequence Data
MH  - Mutation/genetics
MH  - NAD/analogs & derivatives/metabolism
MH  - Protein Conformation
MH  - Protein Folding
MH  - Saccharomyces cerevisiae/*enzymology/genetics
MH  - Structure-Activity Relationship
EDAT- 2000/03/04 09:00
MHDA- 2001/03/23 10:01
CRDT- 2000/03/04 09:00
PHST- 2000/03/04 09:00 [pubmed]
PHST- 2001/03/23 10:01 [medline]
PHST- 2000/03/04 09:00 [entrez]
AID - 10.1038/73359 [doi]
PST - ppublish
SO  - Nat Struct Biol. 2000 Mar;7(3):238-44. doi: 10.1038/73359.