Protein
Methylthioalkylmalate synthase 3, chloroplastic
Organism
Arabidopsis thaliana
Function
Determines the side chain length of aliphatic glucosinolate structures. Accepts all the omega-methylthio-2-oxoalkanoic acids needed to form the known C3 to C8 glucosinolates. Also able to convert pyruvate to citramalate, 2-oxoisovalerate to isopropylmalate, 4-methyl-2-oxopentanoate and 5-methyl-2-oxohexanoate for Leu-derived glucosinolates, 3-methyl-2-oxopentanoate for Ile-derived glucosinolates and phenylpyruvate to phenylethylglucosinolate.
Similarity
Belongs to the alpha-IPM synthase/homocitrate synthase family.
Sequence
MASLLLTSSSMITTSCRSMVLRSGLPIGSSFPSLRLTRPYDKATLFVSCCSAESKKVATSATDLKPIMERRPEYIPNKLPHKNYVRVLDTTLRDGEQSPGAALTPPQKLEIARQLAKLRVDIMEVGFPVSSEEEFEAIKTIAKTVGNEVDEETGYVPVICGIARCKKRDIEATWEALKYAKRPRVMLFTSTSEIHMKYKLKKTKEEVIEMAVNSVKYAKSLGFKDIQFGCEDGGRTEKDFICKILGESIKAGATTVGFADTVGINMPQEFGELVAYVIENTPGADDIVFAIHCHNDLGVATANTISGICAGARQVEVTINGIGERSGNAPLEEVVMALKCRGESLMDGVYTKIDSRQIMATSKMVQEHTGMYVQPHKPIVGDNCFVHESGIHQDGILKNRSTYEILSPEDVGIVKSENSGIVLGKLSGRHAVKDRLKELGYEISDEKFNDIFSRYRELTKDKKRITDADLKALVVNGAEISSEKLNSKGINDLMSSPQISAVV