NCBI Accession #
NP_187204.1
NCBI GenBank Nucleotide #
NM_111426.4
NCBI Official Full Name
regulatory particle triple-A ATPase 5A
NCBI Official Symbol
RPT5A
NCBI Official Synonym Symbols
19S PROTEASOME REGULATORY COMPLEX SUBUNIT S6A; 26S PROTEASOME AAA-ATPASE SUBUNIT; ATS6A.2; F22F7.1; F22F7_1; regulatory particle triple-A ATPase 5A
NCBI Protein Information
regulatory particle triple-A ATPase 5A
NCBI Summary
Encodes RPT5a (Regulatory Particle 5a), one of the six AAA-ATPases of the proteasome regulatory particle. Essential for gametophyte development. In Arabidopsis, the RPT5 subunit is encoded by two highly homologous genes, RPT5a and RPT5b. RPT5a and RPT5b show accession-dependent functional redundancy. In Wassilewskija (Ws) accession: mutant alleles of RPT5a displayed 50% pollen lethality, indicating that RPT5a is essential for male gametophyte development. In the Columbia (Col) accession, a rpt5a mutant allele did not display such a phenotype because the RPT5b Col allele complements the rpt5a defect in the male gametophyte, whereas the RPT5b Ws allele does not. Double rpt5a rpt5b mutants in Col background showed a complete male and female gametophyte lethal phenotype.
UniProt Synonym Gene Names
ATS6A.2; TBP1; TBP-1 homolog A
UniProt Protein Name
26S proteasome regulatory subunit 6A homolog A
UniProt Synonym Protein Names
26S proteasome AAA-ATPase subunit RPT5a; Proteasome 26S subunit 6A homolog A; Regulatory particle triple-A ATPase subunit 5a; Tat-binding protein 1 homolog A; TBP-1 homolog A
UniProt Primary Accession #
Q9SEI2
UniProt Secondary Accession #
Q8H195; Q9SWY7
UniProt Related Accession #
Q9SEI2
UniProt Comments
The 26S proteasome is involved in the ATP-dependent degradation of ubiquitinated proteins. The regulatory (or ATPase) complex confers ATP dependency and substrate specificity to the 26S complex. Plays a essential role in the gametophyte development.