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PDOC00603
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1995-07-26
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* S-adenosyl-L-homocysteine hydrolase signatures *
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S-adenosyl-L-homocysteine hydrolase (EC 3.3.1.1) (AdoHcyase) is an enzyme of
the activated methyl cycle, responsible for the reversible hydratation of S-
adenosyl-L-homocysteine into adenosine and homocysteine. AdoHcyase is an
ubiquitous enzyme which binds and requires NAD+ as a cofactor.
AdoHcyase is a highly conserved protein [1] of about 430 to 470 amino acids.
As signature patterns, we selected two highly conserved regions. The first
pattern is located in the N-terminal section and contains the only conserved
cysteine of AdoHcyase. The second is derived from a glycine-rich region in the
central part of AdoHcyase; a region thought to be involved in NAD-binding.
-Consensus pattern: C-N-I-F-S-[ST]-Q-[DEN]-x-A-A-A-A-I-A
-Sequences known to belong to this class detected by the pattern: ALL.
-Other sequence(s) detected in SWISS-PROT: NONE.
-Consensus pattern: G-K-x(3)-[LIV]-x-G-Y-G-D-V-G-K-G
-Sequences known to belong to this class detected by the pattern: ALL.
-Other sequence(s) detected in SWISS-PROT: NONE.
-Last update: June 1994 / Patterns and text revised.
[ 1] Sganga M.W., Aksamit R.R., Cantoni G.L., Bauer C.E.
Proc. Natl. Acad. Sci. U.S.A. 89:6328-6332(1992).