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- *********************************************
- * 'Cold-shock' DNA-binding domain signature *
- *********************************************
-
- A conserved domain of about 70 amino acids has been found in prokaryotic and
- eukaryotic DNA-binding proteins [1,2,3]. This domain, which is known as the
- 'cold-shock domain' (CSD) is present in the proteins listed below.
-
- - Escherichia coli protein CS7.4 (gene cspA) which is induced in response to
- low temperature (cold-shock protein) and which binds to and stimulates the
- transcription of the CCAAT-containing promoters of the HN-S protein and of
- gyrA.
- - Human Y box binding protein 1 (YB-1). A protein that binds to the CCAAT-
- containing Y box of mammalian HLA class II genes.
- - Xenopus Y box binding proteins -1 and -2 (Y1 and Y2). Proteins that bind to
- the CCAAT-containing Y box of Xenopus hsp70 genes.
- - Xenopus B box binding protein (YB3). YB3 binds the B box promoter element
- of genes transcribed by RNA polymerase III.
- - Enhancer factor I subunit A (EFI-A) (dbpB). A protein that also bind to
- CCAAT-motif in various gene promoters.
- - DbpA, a Human DNA-binding protein of unknown specificity.
- - Bacillus subtilis cold-shock protein cpsB.
- - Streptomyces clavuligerus protein SC 7.0.
- - Escherichia coli proteins cspB, cspC, cspD and cspE.
- - Unr, a mammalian gene encoded upstream of the N-ras gene. Unr contains nine
- repeats that are similar to the CSD domain. The function of Unr is not yet
- known but it could be a multivalent DNA-binding protein.
-
- As a signature pattern for the CSD domain we selected its most conserved
- region which is located in its N-terminal section. It must be noted that the
- beginning of this region is highly similar [4] to the RNP-1 RNA-binding motif.
-
- -Consensus pattern: [FY]-G-F-I-x(6,7)-[DER]-[LIVM]-F-x-H-x-[ST]-x-[LIVMFY]
- -Sequences known to belong to this class detected by the pattern: ALL. This
- pattern finds 4 out of the 9 repeats of the CSD domain in Unr.
- -Other sequence(s) detected in SWISS-PROT: GRP-2, a glycine-rich protein from
- tobacco, the N-terminal part of this protein is strikingly similar to the CSD
- domain.
-
- -Expert(s) to contact by email: Landsman D.
- landsman@ncbi.nlm.nih.gov
-
- -Last update: June 1994 / Text revised.
-
- [ 1] Doniger J., Landsman D., Gonda M.A., Wistow G.
- New Biol. 4:389-395(1992).
- [ 2] Wistow G.
- Nature 344:823-824(1990).
- [ 3] Jones P.G., Inouye M.
- Mol. Microbiol. 11:811-818(1994).
- [ 4] Landsman D.
- Nucleic Acids Res. 20:2861-2864(1992).
-