UniprotKB/SwissProt ID: Q66GP9 (Q66GP9)
Gene Name:
NOA1
Organism: Arabidopsis thaliana (Mouse-ear cress)
Function: Exhibits cGTPase activity; binds and hydrolyzes specifically GTP (PubMed:18801746). May participate in ribosome assembly and stability and thus regulates protein synthesis in chloroplasts. The GTPase activity requires MgCl(2)and the presence of either KCl or (NH(4))(2)SO(4). Involved in the post-transcriptional regulation of the methylerythritol phosphate (MEP) pathway. Involved in chlorophyll-a fluorescence regulation May mediate the production or accumulation of nitric oxide (NO) which is a messenger molecule involved in hormonal signaling and defense responses in plant (PubMed:14526079, PubMed:16272429, PubMed:16690168, PubMed:17351048). Acts as an antisenescence agent. Plays a crucial role in both extracellular calmodulin (ExtCaM)-triggered and salicylic acid (SA)-mediated H(2)O(2)-dependent stomatal closure
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Mitochondrion. Plastid, chloroplast
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