NCBI Accession #
NP_568314.1
NCBI GenBank Nucleotide #
NM_121549.3
NCBI Official Full Name
casein lytic proteinase B3
NCBI Official Symbol
CLPB3
NCBI Official Synonym Symbols
ALBINO AND PALE GREEN 6; APG6; AtCLPB3; CASEIN LYTIC PROTEINASE B-P; casein lytic proteinase B3; CLPB-P; T20K14.60; T20K14_60
NCBI Protein Information
casein lytic proteinase B3
NCBI Summary
Encodes a chloroplast-targeted Hsp101 homologue. Functions as a molecular chaperone involved in plastid differentiation mediating internal thylakoid membrane formation and conferring thermotolerance to chloroplasts during heat stress. APG6 is constitutively expressed in the root tips, the organ boundary region, the reproductive tissues of mature plants where plastids exist as proplastids, and slightly in the stems and leaves. APG6 expression is upregulated in response to heat shock in various organs, but not in response to other abiotic stresses. Apg6 mutants have a pale-green phenotype.
UniProt Synonym Gene Names
APG6; CLPB-P
UniProt Protein Name
Chaperone protein ClpB3, chloroplastic
UniProt Synonym Protein Names
ATP-dependent Clp protease ATP-binding subunit ClpB homolog 3; Casein lytic proteinase B3; Protein ALBINO OR PALE GREEN 6
UniProt Primary Accession #
Q9LF37
UniProt Secondary Accession #
Q8GRN9
UniProt Related Accession #
Q9LF37
UniProt Comments
Molecular chaperone essential for chloroplast development and seedling viability. Mediates internal thylakoid membrane formation and confers thermotolerance to chloroplasts during heat stress.