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- ************************
- * Rhodanese signatures *
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-
- Rhodanese (thiosulfate sulfurtransferase) (EC 2.8.1.1) [1,2] is an enzyme
- which catalyzes the transfer of the sulfane atom of thiosulfate to cyanide, to
- form sulfite and thiocyanate. In vertebrates, rhodanese is a mitochondrial
- enzyme of about 300 amino-acid residues involved in forming iron-sulfur
- complexes and cyanide detoxification. A cysteine residue takes part in the
- catalytic mechanism.
-
- Three bacterial proteins closely related to rhodanese are also thought to
- express a sulfotransferase activity. These are:
-
- - Escherichia coli sseA [3].
- - Saccharopolyspora erythraea cysA [4].
- - Synechococcus strain PCC 7942 rhdA [5]. RhdA is a periplasmic protein
- probably involved in the transport of sulfur compounds.
-
- We developed two patterns for the rhodanese family. The first includes the
- active site residue, the second is based on a highly conserved region at the
- C-terminal extremity of the enzyme.
-
- -Consensus pattern: K-x(3)-E-[LIVM]-x(2)-[LIVMFY](2)-x(4)-[LIVM]-x(9)-C-x(2)-
- G-x(2)-[GSA]
- [C is the active site residue]
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
-
- -Consensus pattern: Y-[DE]-G-[SA]-W-x-E-[FYW]
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
-
- -Last update: October 1993 / Patterns and text revised.
-
- [ 1] Westley J.
- Meth. Enzymol. 77:285-291(1981).
- [ 2] Weiland K.L., Dooley T.P.
- Biochem. J. 275:227-231(1991).
- [ 3] Rudd K.E.
- Unpublished observations (1993).
- [ 4] Donadio S., Shafiee A., Hutchinson C.R.
- J. Bacteriol. 172:350-360(1990).
- [ 5] Laudenbach D.E., Ehrhardt D., Green L., Grossman A.R.
- J. Bacteriol. 173:2751-2760(1991).
-