Protein
Acetolactate synthase large subunit IlvB1
Organism
Mycobacterium tuberculosis (strain CDC 1551 / Oshkosh)
Function
Catalyzes the conversion of 2 pyruvate molecules into acetolactate in the first common step of the biosynthetic pathway of the branched-amino acids such as leucine, isoleucine, and valine. Also involved in condensing pyruvate and 2-ketobutyrate to form 2-aceto-2-hydroxybutyrate (By similarity).
Similarity
Belongs to the TPP enzyme family.
Sequence
MSAPTKPHSPTFKPEPHSAANEPKHPAARPKHVALQQLTGAQAVIRSLEELGVDVIFGIPGGAVLPVYDPLFDSKKLRHVLVRHEQGAGHAASGYAHVTGRVGVCMATSGPGATNLVTPLADAQMDSIPVVAITGQVGRGLIGTDAFQEADISGITMPITKHNFLVRSGDDIPRVLAEAFHIAASGRPGAVLVDIPKDVLQGQCTFSWPPRMELPGYKPNTKPHSRQVREAAKLIAAARKPVLYVGGGVIRGEATEQLRELAELTGIPVVTTLMARGAFPDSHRQNLGMPGMHGTVAAVAALQRSDLLIALGTRFDDRVTGKLDSFAPEAKVIHADIDPAEIGKNRHADVPIVGDVKAVITELIAMLRHHHIPGTIEMADWWAYLNGVRKTYPLSYGPQSDGSLSPEYVIEKLGEIAGPDAVFVAGVGQHQMWAAQFIRYEKPRSWLNSGGLGTMGFAIPAAMGAKIALPGTEVWAIDGDGCFQMTNQELATCAVEGIPVKVALINNGNLGMVRQWQSLFYAERYSQTDLATHSHRIPDFVKLAEALGCVGLRCEREEDVVDVINQARAINDCPVVIDFIVGADAQVWPMVAAGTSNDEIQAARGIRPLFDDITEGHA