Plant Transcription factor database - Universität Potsdam
version: 3.0

Galdieria sulphuraria HSF Family


Wu. 1995: Organisms respond to elevated temperatures and to chemical and physiological stresses by an increase in the synthesis of heat shock proteins. The regulation of heat shock gene expression in eukaryotes is mediated by the conserved heat shock transcription factor (HSF). HSF is present in a latent state under normal conditions; it is activated upon heat stress by induction of trimerization and high-affinity binding to DNA and by exposure of domains for transcriptional activity. Analysis of HSF cDNA clones from many species has defined structural and regulatory regions responsible for the inducible activities. The heat stress signal is thought to be transduced to HSF by changes in the physical environment, in the activity of HSF-modifying enzymes, or by changes in the intracellular level of heat shock proteins.

Members of this family
  SHOULD possess HSF_DNA-bind domain

Domain alignments

This family is also present in:


There are 6 gene models in this family

Gene modelDescriptionDomains
Gs13060.1 gb|ABC47863.1|__Heat shock transcription factor (HSF) [Glycine max] HSF_DNA-bind
Gs16930.1 gb|EDO97264.1|__heat shock transcription factor 2 [Chlamydomonas reinhardtii] 1491|protein heat shock factor protein HSF30, putative, expressed HSF_DNA-bind
Gs27360.1 gb|ABV89640.1|__heat shock factor 4 [Brassica rapa] HSF_DNA-bind
Gs29480.1 ref|NP_193623.1|__AT-HSFA4A (Arabidopsis thaliana heat shock transcription factor A4A) HSF_DNA-bind
Gs41660.1 emb|CAO42382.1|__unnamed protein product [Vitis vinifera] HSF_DNA-bind
Gs51330.1 emb|CAA53761.1|__heat shock factor [Arabidopsis thaliana] | Symbols: HSFA1A, ATHSF1, ATHSFA1A, HSF1 | HSF1 (ARABIDOPSIS HEAT SHOCK FACTOR 1) HSF_DNA-bind

General references

Baniwal, SK; Bharti, K; Chan, KY; Fauth, M; Ganguli, A; Kotak, S; Mishra, SK; Nover, L; Port, M; Scharf, KD; Tripp, J; Weber, C; Zielinski, D; von Koskull-Döring, P. 2004. Heat stress response in plants: a complex game with chaperones and more than twenty heat stress transcription factors. J. Biosci. 29(4):471-87 PUBMEDID:15625403
Fujita, A; Kikuchi, Y; Kuhara, S; Misumi, Y; Matsumoto, S; Kobayashi, H. 1989. Domains of the SFL1 protein of yeasts are homologous to Myc oncoproteins or yeast heat-shock transcription factor. Gene 85(2):321-8 PUBMEDID:2697640
Nover, L; Scharf, KD; Gagliardi, D; Vergne, P; Czarnecka-Verner, E; Gurley, WB. 1996. The Hsf world: classification and properties of plant heat stress transcription factors. Cell Stress Chaperones 1(4):215-23 PUBMEDID:9222607
Wu, C. 1995. Heat shock transcription factors: structure and regulation. Annu. Rev. Cell Dev. Biol. 11:441-69 PUBMEDID:8689565