Protein
Probable GTP diphosphokinase CRSH, chloroplastic
Organism
Arabidopsis thaliana
Function
Possesses calcium-dependent ppGpp (guanosine 3'-diphosphate 5'-diphosphate) synthetase activity in vitro and is able to functionally complement E.coli relA mutants. Plays an important role in the timing adjustment of pistil and pollen maturation required for successful pollination. May be involved in a rapid plant ppGpp-mediated response to pathogens and other stresses.
Similarity
Belongs to the RelA/SpoT family.
Sequence
MSVIRPSPIPIPRCRSQVLHRRLYSIQLIQRRRRRWNPRSEVEDTAIESTARSPEAAGGKMVVELVGAFNEVTERMNSVWLSTSSSRLLFKALKLSIPILQSLPLASDGRSPLSKALSLSIILADLQMDAEVISASILSEVVDANAISIYEVRDHIGTGTAHLLHEIFRVKNIPFKVDVLDDETAASLRKFYLTYYDIRAVIMDLVSKLDEMRHLDHLPRYRQQILSLEVLKIYSPLAHAVGANHLSLELEDISFRYLFPCSYIYLDSWLRGHENGSKPLIDVYKEQLHRSLKDDLVLAEMVNDVYIKGRYKSRYSMMKKLLRDGRKPEEVNDVLGLRVILMPNSVVNDVEVGEKACYRTSEIIRSLWKEIPHRTKDYIARPKENGYRSLHMAVDVSDSDQIRPLMEIQIRTMDMDGSANAGTASHSLYKGGLTDPKEAKRLKAIMLAAADLAAIRLKDISSNKHQSFKTTTNQRDRVFCLLDKNGDGMISIEELMEVMEELGAPGEDAEEMMQLLDSNSDGSLSSDEFDTFQKQVEFMRKWEDRDNEYKSLLDEKLHDLPHQDTTGLIQLYNKELEDRLSTH