NCBI Accession #
NP_192865.1
NCBI GenBank Nucleotide #
NM_117197.4
NCBI Official Full Name
phosphatase-like protein
NCBI Official Symbol
SGT1B
NCBI Official Synonym Symbols
ATSGT1B; EDM1; ENHANCED DOWNY MILDEW 1; ENHANCER OF TIR1-1 AUXIN RESISTANCE 3; ETA3; F8L21.50; F8L21_50; RPR1
NCBI Protein Information
phosphatase-like protein
NCBI Summary
Functions in plant disease resistance signaling, SCF(TIR1) mediated degradation of Aux/IAA proteins and HSP90 mediated degradation of R resistance proteins. AtSGT1a and AtSGT1b are functionally redundant in the resistance to pathogenes. AtSGT1b was more highly expressed than AtSGT1. The N-terminal TPR domain of AtSGT1a reduces the steady-state level of Arabidopsis SGT1 proteins whereas the same domain from AtSGT1b enhances SGT1 accumulation. The TPR domain is dispensable for SGT1 resistance.
UniProt Synonym Gene Names
EDM1; ETA3; RPR1; AtSGT1b
UniProt Protein Name
Protein SGT1 homolog B
UniProt Synonym Protein Names
Protein ENHANCED DOWNY MILDEW 1; Protein ENHANCER OF TIR1-1 AUXIN RESISTANCE 3; Suppressor of G2 allele of SKP1 homolog B
UniProt Primary Accession #
Q9SUT5
UniProt Related Accession #
Q9SUT5
UniProt Comments
Involved in plant innate immunity. Is essential for resistance conferred by multiple R genes recognizing different oomycete pathogen isolates like avirulent H.parasitica (downy mildew). Contributes additively with RAR1 to RPP5-dependent resistance. Not required for RPM1, RPS2, RPS4 and RPS5-mediated resistance. Functions as negative regulator of RPS5 accumulation by assisting its degradation. May be involved in heat shock response by associating with HSC70-1 chaperone. Required for the SCF(TIR1)-mediated degradation of Aux/IAA proteins, but maybe not for SCF(TIR1) assembly or binding to its Aux/IAA substrates. Probably required for SCF-mediated ubiquitination, by coupling HSP90 to SCF complex for ubiquitination of HSP90 client proteins. Required for the coronatine/jasmonic acid-mediated signal transduction pathway.