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- ************************************************
- * Actinin-type actin-binding domain signatures *
- ************************************************
-
- Alpha-actinin is a F-actin cross-linking protein which is thought to anchor
- actin to a variety of intracellular structures [1]. The actin-binding domain
- of alpha-actinin seems to reside in the first 250 residues of the protein. A
- similar actin-binding domain has been found in the N-terminal region of many
- different actin-binding proteins [2,3]:
-
- - In the beta chain of spectrin (or fodrin).
- - In dystrophin, the protein defective in Duchenne muscular dystrophy (DMD)
- and which may play a role in anchoring the cytoskeleton to the plasma
- membrane.
- - In the slime mold gelation factor (or ABP-120).
- - In actin-binding protein ABP-280 (or filamin), a protein that link actin
- filaments to membrane glycoproteins.
- - In fimbrin (or plastin), an actin-bundling protein. Fimbrin differs from
- the above proteins in that it contains two tandem copies of the actin-
- binding domain and that these copies are located in the C-terminal part of
- the protein.
-
- We selected two conserved regions as signature patterns for this type of
- domain. The first of this region is located at the beginning of the domain,
- while the second one is located in the central section and has been shown to
- be essential for the binding of actin.
-
- -Consensus pattern: [EQ]-x(2)-[ATV]-F-x(2)-W-x-N
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: 5.
-
- -Consensus pattern: [LIVM]-x-[SGN]-[LIVM]-[DAGHE]-[SAG]-x-[DEAG]-[LIVM]-x-
- [DEAG]-x(4)-[LIVM]-x-L-[SAG]-[LIVM](2)-W-x-[LIVM](2)
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
-
- -Last update: June 1994 / Patterns and text revised.
-
- [ 1] Schleicher M., Andre E., Harmann A., Noegel A.A.
- Dev. Genet. 9:521-530(1988).
- [ 2] Matsudaira P.
- Trends Biochem. Sci. 16:87-92(1991).
- [ 3] Dubreuil R.R.
- BioEssays 13:219-226(1991).
-