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- * 14-3-3 proteins signatures *
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-
- The 14-3-3 proteins [1] are a family of closely related acidic homodimeric
- proteins of about 30 Kd which are abundantly present in mammalian brain
- tissues and located preferentially in neurons. The 14-3-3 proteins seem to
- have multiple biological activities. They function as protein-kinase
- dependent activators of tyrosine and tryptophan hydroxylases, which are key
- enzymes in the biosynthetic pathway of neurotransmitters, such as dopamine
- and serotonin, in the brain. Some of them act as inhibitors of protein
- kinase C while others have been shown to have a phospholipase A2 activity on
- choline and ethanolamine glycerophospholipids. In yeast a 14-3-3-like protein
- (gene BMH1) is involved in growth regulation.
-
- The 14-3-3 family of proteins are ubiquitously found in all eukaryotic species
- studied and have been sequenced in fungi, plants, Drosophila, and vertebrates.
- The sequences of the 14-3-3 proteins are extremely well conserved. As
- signature patterns we have selected two perfectly conserved regions: the first
- is a peptide of 11 residues located in the N-terminal section; the second, a
- 21 amino acid region located in the C-terminal section.
-
- -Consensus pattern: R-N-L-L-S-V-A-Y-K-N-V
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
-
- -Consensus pattern: S-Y-K-D-S-T-L-I-M-Q-L-L-[RH]-D-N-L-T-L-W-T-[SA]
- -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] Aitken A., Collinge D.B., van Heusden B.P.H., Isobe T., Roseboom P.H.,
- Rosenfeld G., Soll J.
- Trends Biochem. Sci. 17:498-501(1992).
-