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- *****************************************
- * HSF-type DNA-binding domain signature *
- *****************************************
-
- Heat shock factor (HSF) is a DNA-binding protein that specifically binds heat
- shock promoter elements (HSE). HSE is a palindromic element rich with
- repetitive purine and pyrimidine motifs: 5'-nGAAnnTTCnnGAAnnTTCn-3'. HSF is
- expressed at normal temperatures but is activated by heat shock or chemical
- stressors [1,2].
-
- The sequences of HSF from various species show extensive similarity in a
- region of about 90 amino acids, which has been shown, in yeast HSF, to bind
- DNA.
-
- SFL1, a yeast protein involved in cell surface assembly and regulation of the
- gene related to flocculation (asexual cell aggregation) also contains a domain
- highly similar to that of HSF's [3].
-
- We have derived a pattern from the most conserved part of the HSF DNA-binding
- domain, its central region.
-
- -Consensus pattern: L-x(3)-[FY]-K-H-x-N-x-[STA]-S-F-[LIVM]-R-Q-L-N-x-Y-G-
- [FYW]-[RKH]-K-[LIVM]
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
- -Last update: June 1994 / Text revised.
-
- [ 1] Sorger P.K.
- Cell 65:363-366(1991).
- [ 2] Mager W.H., Moradas Ferreira P.
- Biochem. J. 290:1-13(1993).
- [ 3] Fujita A., Kikuchi Y., Kuhara S., Misumi Y., Matsumoto S., Kobayashi H.
- Gene 85:321-328(1989).
-