NCBI Accession #
NP_200412.1
NCBI GenBank Nucleotide #
NM_124983.4
NCBI Official Full Name
heat shock protein 81-3
NCBI Official Symbol
HSP81-3
NCBI Official Synonym Symbols
AtHsp90-3; AtHsp90.3; heat shock protein 81-3; HEAT SHOCK PROTEIN 81.3; HEAT SHOCK PROTEIN 90-3; HEAT SHOCK PROTEIN 90.3; HSP81.2; Hsp81.3; MDA7.5; MDA7_5
NCBI Protein Information
heat shock protein 81-3
NCBI Summary
A member of heat shock protein 90 (HSP90) gene family. Expressed in all tissues and abundant in root apical meristem, pollen and tapetum. Expression is NOT heat-induced but induced by IAA and NaCl. Overexpression reduced tolerance to heat and conferred higher tolerance to calcium.
UniProt Gene Name
HSP90-3
UniProt Synonym Gene Names
Hsp81-3
UniProt Protein Name
Heat shock protein 90-3
UniProt Synonym Protein Names
HSP81.2; Heat shock protein 81-3
UniProt Primary Accession #
P51818
UniProt Secondary Accession #
O03985; Q8VYT8; Q94A60; Q9FKU5
UniProt Related Accession #
P51818
UniProt Comments
Functions as a holding molecular chaperone (holdase) which stabilizes unfolding protein intermediates and rapidly releases them in an active form once stress has abated. Functions as a folding molecular chaperone (foldase) that assists the non-covalent folding of proteins in an ATP-dependent manner (PubMed:23827697). Regulates RPP4-mediated temperature-dependent cell death and defense responses (PubMed:24611624). May assist SGT1B in the formation of SCF E3 ubiquitin ligase complexes that target the immune receptors SNC1, RPS2 and RPS4 for degradation, to regulate receptor levels and avoid autoimmunity (PubMed:24889324).