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SGR2

Gene
SGR2
Protein
Phospholipase SGR2
Organism
Arabidopsis thaliana
Length
933 amino acids
Function
Involved in vacuolar formation or function (e.g. formation of vacuolar membrane 'bulbs'). Required for amyloplast sedimentation in the endodermis during shoot gravitropism, which are thus acting as statoliths. Particularly important for the negative gravitropism leading to leaf movement observed in darkness.
Mass
106.316 kDa
Sequence
MEDRETHLGTREVNETSPDLLKNTPSNIARLEDVIEQCHGRQKYLAQTRSPSDGSDVRWYFCKVPLAENELAASVPRTDVVGKSEYFRFGMRDSLAIEASFLQREDELLSLWWKEYAECSEGPKLQVNSKKKSIETPSEASVSSSLYEVEEERVGVPVKGGLYEVDLVRRHCFPVYWNGDNRRVLRGHWFARKGGLDWLPIPETVSEQLEVAYRNKVWRRRSFQPSGLFAARIDLQGSSLGLHALFTGEDDTWEAWLNVDPSGFSGIVGYTGNGIKLRRGYAGSYSPKPTQEELRQQKEEEMDDYCSQVPVRHLVFMVHGIGQKGEKSNLVDDVGNFRQITAALAERHLTSHQLSTQRVLFIPCQWRKGLKLSGEAAVDKCTLDGVRRFREMLSATVHDVLYYMSPIYCQAIIDSVSKQLNRLYLKFLKRNPDYVGKISIYGHSLGSVLSYDILCHQHNLSSPFPMDSVYKKFFPDEESPPTPAKADKPCSSHPSSNFEPEKSDQLNNPEKITGQDNNTMAKEPTVLEHHDVIQEDPSLISDSVVANVGLERRGGQEDDHHDSSGAISSQDVPDGADCRTPDSPSCSQEQSWDKESVNSNNEERIKLLQDEVNSLRSKVAQLLSENARILSDEKAKTSVAPKELNNEKVQTEDADAPTSFTPFIKYQKLEFKVDTFFAVGSPLGVFLALRNIRLGIGKGKDYWEEENAIEEMPACRRMFNIFHPYDPVAYRVEPLVCKEYLPERPVIIPYHRGGKRLHIGLQDFREDFAARSQRIMNHFDSVRTRVLTICQSKSADNLDEMEETDDEKDDRSYGSLMIERLTGTRDGRIDHMLQEKTFEHPYLQAIGAHTNYWRDQDTALFIIKHLYRELPDGPNSPTESTEGDDSPKDSSRPHSWIDRREADYDDEELPLTFSDKQITRSFSAEAKKYLKKP

Gene
SGR2
Protein
Magnesium dechelatase SGR2, chloroplastic
Organism
Arabidopsis thaliana
Length
271 amino acids
Function
Magnesium chelatase involved in chlorophyll a degradation in the chlorophyll-protein complexes of photosystem I (PSI) and photosystem II (PSII) (PubMed:26732493, PubMed:27604697). Contributes to the degradation of PSI and PSII in the thylakoid membranes (PubMed:26732493, PubMed:27604697). Required to trigger chlorophyll degradation during natural and dark-induced leaf senescence (Probable) (PubMed:26732493). Mediates chlorophyll degradation during embryo degreening (PubMed:24043799, PubMed:26732493, PubMed:28873256). Recombinant SGR2 possesses high dechelating activity against chlorophyll a, very low activity against chlorophyllide a, and no activity against chlorophyll b (PubMed:27604697).
Similarity
Belongs to the staygreen family.
Mass
30.753 kDa
Sequence
MCSLATNLLLPSKMKPVFPEKLSTSSLCVTTRRSKMKNRSIVPVARLFGPAIFEASKLKVLFLGVDEKKHPAKLPRTYTLTHSDITAKLTLAISQSINNSQLQGWANKLFRDEVVGEWKKVKGKMSLHVHCHISGGHFFLNLIAKLRYYIFCKELPVVLEAFAHGDEYLLNNHPELQESPVWVYFHSNIPEYNKVECWGPLWEAMSQHQHDGRTHKKSETLPELPCPDECKCCFPTVSTIPWSHRHYQHTAADENVADGLLEIPNPGKSKG