Involved in the catabolism of short chain fatty acids (SCFA) via the tricarboxylic acid (TCA)(acetyl degradation route) and probably the 2-methylcitrate cycle I (propionate degradation route). Catalyzes the reversible isomerization of citrate to isocitrate via cis-aconitate. Also able to catalyze the hydration of cis-homoaconitate to yield (R)-homocitrate, but with a lower efficiency (PubMed:23106124). Could catalyze the hydration of 2-methyl-cis-aconitate to yield (2R,3S)-2-methylisocitrate. The apo form of AcnA functions as a RNA-binding regulatory protein (By similarity).

Belongs to the aconitase/IPM isomerase family.

902 amino acids

MKNSFQTLKTLTTKSGTYGYYDLQELERKGVAEVSRLPFSIRVMLESLLRNEDGYQVTREDIEALARWRPDPGEINVPLKLARVILQDFTGVPAVVDLAAMRDAIKAKGGDPKRINPVVPADLVIDHSVQVDAFGTAYAFFYNVEKEYERNRERYLLLKWAQNALENFRVVPPGTGIVHQVNIEYLTKVVMTGKRDGLTLAFPDSLVGTDSHTTMVNGLGVLGWGVGGIEAEAVMLGQPYYMLAPRVVGFKLYGELPEGATATDLVLTVTEMLRKHGVVGKFVEFYGPGVAKLSTPDRATIANMAPEYGATMGFFPVDEETLNYLRQTGRPEELVELVEAYTKAVGLFRTPEAEEKVQYSEYLELDLSAVEPSLAGPKRPQDRVPLKEVKKSFLAHLTKPVKERGFGLSEDQLQRKVLVKRRDEEFELTHGSVVIAAITSCTNTSNPSVMLGAGLLAKKAVEAGLDRKPWVKTSLAPGSKVVTDYLEMSGLMPFLEALGFHLVGYGCTTCIGNSGPLPEDIAKAVEEGNLVVAAVLSGNRNFEGRINPHVKANYLASPMLVVAYALAGRMDIDFTTEPLGFDPNGKPIYLKDIWPSMEEIREAIRKTLDPELFKKEYSKVFEGDERWQALPAPTGELYQWDPESTYIQNPPFFEDLGERKVEDIRGARVLLVLGDSVTTDHISPAGAIPVKSPAGQYLISKGVKPEDFNSYGSRRGNHEVMMRGTFANIRIKNLMLDGIEGGYAKKLPEGDVDFVYNVAMRYKAEGTPLLVIAGKEYGTGSSRDWAAKGTYLLGIRAVLAESFERIHRSNLVGMGVLPLEFLPGENRETLGLTGYEVYDILGLEDLKPRKLVDIVARREDGSEVRFQAIARLDTPVEVDYYKNGGILQTVLLNMLKEAKATE

99.8 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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