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- ********************************
- * Caseins alpha/beta signature *
- ********************************
-
- Caseins [1] are the major protein constituent of milk. Caseins can be
- classified into two families; the first consists of the kappa-caseins, and the
- second groups the alpha-s1, alpha-s2, and beta-caseins. The alpha/beta caseins
- are a rapidly diverging family of proteins. However two regions are conserved:
- a cluster of phosphorylated serine residues and the signal sequence. The
- signature pattern we selected for this family of proteins is based on the last
- eight residues of the signal sequence.
-
- -Consensus pattern: C-L-[LV]-A-x-A-[LVF]-A
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: mammalian 47 Kd heat shock protein;
- in these proteins the pattern also corresponds to the signal peptide.
-
- -Note: alpha-s2 casein is known as epsilon-casein in mouse, gamma-casein in
- rat and casein-A in guinea pig. Alpha-s1 casein is known as alpha-casein in
- rat and rabbit and as casein-B in guinea-pig.
-
- -Last update: December 1992 / Text revised.
-
- [ 1] Holt C., Sawyer L.
- Protein Eng. 2:251-259(1988).
-