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HSF1 heat stress transcription factor A-1a

HsfA1a, AtHSFA1a
native protein is a trimer, interacts with HSP70, also with TBP, DNA interaction is modulated by phosphorylation and is heat-shock inducible (from NCBI)
Top mentioned proteins: HSP70, V1a, CAN, HAD, SET
Papers on HsfA1a
Tomato HsfA1a plays a critical role in plant drought tolerance by activating ATG genes and inducing autophagy.
New
Zhou et al., Hangzhou, China. In Autophagy, Dec 2015
In this study, we demonstrated that transcription factor HsfA1a played a critical role in tomato tolerance to drought stress, in part through its positive role in induction of autophagy under drought stress.
HEAT-INDUCED TAS1 TARGET1 Mediates Thermotolerance via HEAT STRESS TRANSCRIPTION FACTOR A1a-Directed Pathways in Arabidopsis.
He et al., Shanghai, China. In Plant Cell, 2014
In heat-tolerant plants overexpressing HsfA1a, the HTT genes were upregulated, especially at high temperatures.
Overexpression of Arabidopsis HsfA1a enhances diverse stress tolerance by promoting stress-induced Hsp expression.
Zhang et al., Kunming, China. In Genet Mol Res, 2013
Arabidopsis (Arabidopsis thaliana) group A1 heat shock factors (Hsfs), including HsfA1a, are important regulators in the heat shock response.
Arabidopsis heat shock factor HsfA1a directly senses heat stress, pH changes, and hydrogen peroxide via the engagement of redox state.
Zhang et al., Kunming, China. In Plant Physiol Biochem, 2013
Arabidopsis heat shock factor HsfA1a is present in a latent, monomeric state under normal conditions; its activation involves heat stress-induced trimerization, binding to heat shock element in target promoters, and the acquisition of transcriptional competence.
Acquired thermotolerance independent of heat shock factor A1 (HsfA1), the master regulator of the heat stress response.
Charng et al., Taipei, Taiwan. In Plant Signal Behav, 2012
Previously, we showed that Arabidopsis HsfA1a, HsfA1b, and HsfA1d act as master regulators in the HS response.
Arabidopsis HsfA1 transcription factors function as the main positive regulators in heat shock-responsive gene expression.
Yamaguchi-Shinozaki et al., Tokyo, Japan. In Mol Genet Genomics, 2011
Among the 21 Arabidopsis heat shock factors, we chose 4 HsfA1-type proteins as candidate transcriptional activators (HsfA1a, HsfA1b, HsfA1d, and HsfA1e) based on transactivation activity and expression patterns.
Promoter specificity and interactions between early and late Arabidopsis heat shock factors.
Schöffl et al., Tübingen, Germany. In Plant Mol Biol, 2010
The class A heat shock factors HsfA1a and HsfA1b are highly conserved, interacting regulators, responsible for the immediate-early transcription of a subset of heat shock genes in Arabidopsis.
Cytosol-localized heat shock factor-binding protein, AtHSBP, functions as a negative regulator of heat shock response by translocation to the nucleus and is required for seed development in Arabidopsis.
Jinn et al., Taipei, Taiwan. In Plant Physiol, 2010
On the attenuation of HSR, HSP70 and HSF Binding Protein1 (HSBP1) interact with HSF1 and thus dissociate trimeric HSF1 into an inert monomeric form in humans.
The heat-inducible transcription factor HsfA2 enhances anoxia tolerance in Arabidopsis.
Perata et al., Pisa, Italy. In Plant Physiol, 2010
Among the transcription factors induced by both heat and anoxia, the heat shock factor A2 (HsfA2), known to be involved in Arabidopsis acclimation to heat and to other abiotic stresses, was strongly induced by anoxia.
Detection of in vivo interactions between Arabidopsis class A-HSFs, using a novel BiFC fragment, and identification of novel class B-HSF interacting proteins.
Schöffl et al., Tübingen, Germany. In Eur J Cell Biol, 2010
Genetic and functional analysis suggests that HsfA1a and HsfA1b are central regulators required in the early phase of the heat shock response, which have the capacity to functionally replace each other.
Isolation of heat shock factor HsfA1a-binding sites in vivo revealed variations of heat shock elements in Arabidopsis thaliana.
Zhang et al., Kunming, China. In Plant Cell Physiol, 2008
In this report we integrated chromatin immunoprecipitation with DNA cloning to isolate genomic sites bound in vivo by heat shock factor HsfA1a in Arabidopsis thaliana.
The calmodulin-binding protein kinase 3 is part of heat-shock signal transduction in Arabidopsis thaliana.
Zhou et al., Shijiazhuang, China. In Plant J, 2008
In this study, using a yeast two-hybrid assay, we found that AtCBK3 interacts with AtHSFA1a.
Identification of novel heat shock factor-dependent genes and biochemical pathways in Arabidopsis thaliana.
Schöffl et al., Tübingen, Germany. In Plant J, 2005
In order to assess specific functional roles of plant heat shock transcription factors (HSF) we conducted a transcriptome analysis of Arabidopsis thaliana hsfA1a/hsfA1b double knock out mutants and wild-type plants.
Heat stress response in plants: a complex game with chaperones and more than twenty heat stress transcription factors.
Review
von Koskull-Döring et al., Frankfurt am Main, Germany. In J Biosci, 2004
This is best illustrated for the tomato Hsf system: (i) HsfA1a is the master regulator responsible for hs-induced gene expression including synthesis of HsfA2 and HsfB1.
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