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- ***************************
- * XPAC protein signatures *
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-
- Xeroderma pigmentosum (XP) [1] is a human autosomal recessive disease,
- characterized by a high incidence of sunlight-induced skin cancer. People's
- skin cells with this condition are hypersensitive to ultraviolet light, due
- to defects in the incision step of DNA excision repair. There are a minimum of
- seven genetic complementation groups involved in this pathway: XP-A to XP-G.
- XP-A is the most severe form of the disease and is due to defects in a 30 Kd
- nuclear protein called XPAC [2].
-
- The sequence of the XPAC protein is conserved from higher eukaryotes [3] to
- yeast (gene RAD14) [4]. XPAC is a hydrophilic protein of 247 to 296 amino-acid
- residues which has a C4-type zinc finger motif in its central section.
-
- We have developed two signature patterns for XPAC proteins. The first
- corresponds to the zinc finger region, the second to a highly conserved region
- located some 12 residues after the zinc finger region.
-
- -Consensus pattern: C-x-[DE]-C-x(3)-[LIVMF]-x(1,2)-D-x(2)-L-x(3)-F-x(4)-C-
- x(2)-C
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
-
- -Consensus pattern: [LIVM](2)-T-[KR]-T-E-x-K-x-[DE]-Y-[LIVMF](2)-x-D-x-[DE]
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
-
- -Last update: October 1993 / Text revised.
-
- [ 1] Wood R.D., Coverley D.
- BioEssays 13:447-453(1991).
- [ 2] Miura N., Miyamoto I., Asahina H., Satokata I., Tanaka K., Okada Y.
- J. Biol. Chem. 266:19786-19789(1991).
- [ 3] Shimamoto T., Kohno K., Tanaka K., Okada Y.
- Biochem. Biophys. Res. Commun. 181:1231-1237(1991).
- [ 4] Bankmann M., Prakash L., Prakash S.
- Nature 355:555-558(1992).
-