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- ****************************************************
- * Bacterial quinoprotein dehydrogenases signatures *
- ****************************************************
-
- Pyrrolo-quinoline quinone (PQQ) is redox coenzyme, which serves as a cofactor
- for a number of enzymes (quinoproteins) and particularly for some bacterial
- dehydrogenases [1,2]. A number of these bacterial quinoproteins are clearly
- evolutionary related. These proteins are listed below.
-
- - Methanol dehydrogenases (MDH) (EC 1.1.99.8), from methylotrophs.
- - Ethanol dehydrogenases from Acetobacter aceti [3].
- - Glucose dehydrogenase (EC 1.1.99.17) from Acinetobacter calcoaceticus,
- Escherichia coli, and Gluconobacter oxydans [4].
-
- These dehydrogenases all have from 600 to 800 amino acids. We developed two
- signature patterns for these proteins using sequence data from well conserved
- regions: the first one is located in the N-terminal half while the second one
- is from the C-terminal half.
-
- -Consensus pattern: [DEN]-W-x(3)-G-[RK]-x(6)-[FYW]-S-x(4)-[LIVM]-N-x(2)-N-V-
- x(2)-L-[RK]
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
-
- -Consensus pattern: W-x(4)-Y-D-x(3)-[DN]-[LIVMFY](4)-x(2)-G-x(2)-[STA]-P
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
-
- -Last update: December 1992 / Patterns and text revised.
-
- [ 1] Duine J.A., Jongenan J.A.
- Annu. Rev. Biochem. 58:403-426(1989).
- [ 2] Gallop P.M., Paz M.A., Flueckiger R., Kagan H.M.
- Trends Biochem. Sci. 14:343-346(1989).
- [ 3] Inoue T., Sunagawa M., Mori A., Imai C., Fukuda M., Takagi M., Yano K.
- J. Bacteriol. 171:3115-3122(1989).
- [ 4] Cleton-Jansen A.-M., Dekker S., van de Putte P., Goosen N.
- Mol. Gen. Genet. 229:206-212(1991).
-