NCBI Accession #
NP_001117215.1
NCBI GenBank Nucleotide #
NM_001123743.2
NCBI Official Full Name
translocon at the outer envelope membrane of chloroplasts 33
NCBI Official Symbol
TOC33
NCBI Official Synonym Symbols
ATTOC33; PLASTID PROTEIN IMPORT 1; PPI1; T6A9.32; translocon at the outer envelope membrane of chloroplasts 33
NCBI Protein Information
translocon at the outer envelope membrane of chloroplasts 33
NCBI Summary
Encodes a GTP-binding GTP-ase. Component of the chloroplast protein import machinery. Required for import of POR B into plastids. Toc33 phosphorylation may not play an important role in vivo.
UniProt Synonym Gene Names
PPI1; AtToc33
UniProt Protein Name
Translocase of chloroplast 33, chloroplastic
UniProt Synonym Protein Names
33 kDa chloroplast outer envelope protein; Plastid protein import 1
UniProt Primary Accession #
O23680
UniProt Secondary Accession #
Q94B42; Q9GDD3
UniProt Related Accession #
O23680
UniProt Comments
GTPase involved in protein precursor import into chloroplasts. Seems to recognize chloroplast-destined precursor proteins and regulate their presentation to the translocation channel through GTP hydrolysis. Binds GTP, GDP, XTP, but not ATP. Probably specialized in the import of nuclear encoded photosynthetic preproteins from the cytoplasm to the chloroplast, especially during early development stages.