PMID- 22069470
OWN - NLM
STAT- MEDLINE
DCOM- 20120316
LR  - 20170220
IS  - 1932-6203 (Electronic)
IS  - 1932-6203 (Linking)
VI  - 6
IP  - 11
DP  - 2011
TI  - The molecular basis for the broad substrate specificity of human sulfotransferase
      1A1.
PG  - e26794
LID - 10.1371/journal.pone.0026794 [doi]
AB  - Cytosolic sulfotransferases (SULTs) are mammalian enzymes that detoxify a wide
      variety of chemicals through the addition of a sulfate group. Despite extensive
      research, the molecular basis for the broad specificity of SULTs is still not
      understood. Here, structural, protein engineering and kinetic approaches were
      employed to obtain deep understanding of the molecular basis for the broad
      specificity, catalytic activity and substrate inhibition of SULT1A1. We have
      determined five new structures of SULT1A1 in complex with different acceptors,
      and utilized a directed evolution approach to generate SULT1A1 mutants with
      enhanced thermostability and increased catalytic activity. We found that active
      site plasticity enables binding of different acceptors and identified dramatic
      structural changes in the SULT1A1 active site leading to the binding of a second 
      acceptor molecule in a conserved yet non-productive manner. Our combined approach
      highlights the dominant role of SULT1A1 structural flexibility in controlling the
      specificity and activity of this enzyme.
FAU - Berger, Ilana
AU  - Berger I
AD  - Department of Life Sciences, Ben-Gurion University of the Negev, Be'er Sheva,
      Israel.
FAU - Guttman, Chen
AU  - Guttman C
FAU - Amar, Dotan
AU  - Amar D
FAU - Zarivach, Raz
AU  - Zarivach R
FAU - Aharoni, Amir
AU  - Aharoni A
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20111101
PL  - United States
TA  - PLoS One
JT  - PloS one
JID - 101285081
RN  - 0 (Coumarins)
RN  - 0 (Nitriles)
RN  - 0 (Nitrophenols)
RN  - 19088-73-4 (3-cyano-7-hydroxycoumarin)
RN  - EC 2.8.2.1 (Arylsulfotransferase)
RN  - EC 2.8.2.1 (SULT1A1 protein, human)
RN  - Y92ZL45L4R (4-nitrophenol)
SB  - IM
MH  - Arylsulfotransferase/*chemistry/genetics/*metabolism
MH  - Binding Sites
MH  - Catalysis
MH  - Catalytic Domain
MH  - Coumarins/*metabolism
MH  - Crystallography, X-Ray
MH  - Humans
MH  - Kinetics
MH  - *Models, Molecular
MH  - Mutagenesis, Site-Directed
MH  - Mutation/genetics
MH  - Nitriles/*metabolism
MH  - Nitrophenols/*metabolism
MH  - Protein Binding
MH  - Protein Conformation
MH  - Static Electricity
MH  - Substrate Specificity
PMC - PMC3206062
OID - NLM: PMC3206062
EDAT- 2011/11/10 06:00
MHDA- 2012/03/17 06:00
CRDT- 2011/11/10 06:00
PHST- 2011/08/08 00:00 [received]
PHST- 2011/10/04 00:00 [accepted]
PHST- 2011/11/10 06:00 [entrez]
PHST- 2011/11/10 06:00 [pubmed]
PHST- 2012/03/17 06:00 [medline]
AID - 10.1371/journal.pone.0026794 [doi]
AID - PONE-D-11-15267 [pii]
PST - ppublish
SO  - PLoS One. 2011;6(11):e26794. doi: 10.1371/journal.pone.0026794. Epub 2011 Nov 1.