home *** CD-ROM | disk | FTP | other *** search
- ************************
- * Rubredoxin signature *
- ************************
-
- Rubredoxins [1] are small electron-transfer prokaryotic proteins. They contain
- an iron atom which is ligated by four cysteine residues. Rubredoxins are, in
- some cases, functionally interchangeable with ferredoxins. As a pattern for
- these proteins we have selected a conserved region that includes two of the
- cysteine residues that bind the iron atom.
-
- -Consensus pattern: [LIVM]-x(3)-W-x-C-P-x-C-[AGD]
- [The two C's bind the iron atom]
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
-
- -Note: in Pseudomonas oleovorans rubredoxin 2 (alkG) [2] this pattern is found
- twice (that protein has two rubredoxin domains).
- -Note: rubrerythrin [3], a protein with inorganic pyrophosphatase activity
- from Desulfovibrio vulgaris possesses a C-terminal rubredoxin-like domain.
- But this domain is too divergent to be detected by the above pattern.
-
- -Last update: October 1993 / Pattern and text revised.
-
- [ 1] Berg J.M., Holm R.H.
- (In) Iron-sulfur proteins, Spiro T.G., Ed., pp1-66, Wiley, New-York,
- (1982).
- [ 2] Kok M., Oldenhuis R., der Linden M.P.G., Meulenberg C.H.C., Kingma J.,
- Witholt B.
- J. Biol. Chem. 264:5442-5451(1989).
- [ 3] van Beeumen J.J., van Driessche G., Liu M.-Y., Le Gall J.
- J. Biol. Chem. 266:20645-20653(1991).
-