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- *********************************************************
- * Tau and MAP proteins tubulin-binding domain signature *
- *********************************************************
-
- Microtubules consist of tubulins as well as a group of additional proteins
- collectively known as the Microtubule Associated Proteins (MAP). MAP's have
- been classified into two classes: high molecular weight MAP's and Tau
- protein. These proteins promote microtubule assembly and stabilize
- microtubules. The C-terminal region of a subset of these proteins contains
- three or four tandem repeats of a conserved domain of about thirty amino acid
- residues which is implicated in tubulin-binding and which seems to have a
- stiffening effect on microtubules. The proteins currently known to contain
- such repeats are:
-
- - Tau [1], from neurones.
- - MAP2 [2], a neuronal member of the high molecular weight MAP's.
- - MAP4 [3], a non-neuronal member of the high molecular weight MAP's. MAP4 is
- is also expressed in some neurons.
-
- The pattern we developed to detect this repeated region spans the last
- thirteen residues of the repeated region.
-
- -Consensus pattern: G-S-x(2)-N-x(2)-H-x-[PA]-[AG]-G(2)
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
-
- -Note: the first repeat of MAP2 is not picked up by the pattern because it has
- Tyr instead of His in position 8, and Lys instead of Gly in position 11.
-
- -Expert(s) to contact by email: Matus A.
- matus@fmi.ch
-
- -Last update: June 1994 / Pattern and text revised.
-
- [ 1] Kosik K.S., Orecchio L.D., Bakalis S., Neve R.L.
- Neuron 2:1389-1397(1989).
- [ 2] Matus A.
- Trends Neurosci. 17:19-22(1994).
- [ 3] Chapin S.J., Bulinski J.C.
- J. Cell Sci. 98:27-36(1991).
-