*Source: E Coli or Yeast or Baculovirus or Mammalian Cell; *Purity: >90%; *Tag Information: His tagged; *Notes: Repeated freezing and thawing is not recommended. Store working aliquots at 4 degree C for up to one week.; *Seq: SQQVIIFDT TLRDGEQALQ ASLSVKEKLQ IALALERMGV DVMEVGFPVS SPGDFESVQT IARQVKNSRV CALARCVEKD IDVAAESLKV AEAFRIHTFI ATSPMHIATK LRSTLDEVIE RAIYMVKRAR NYTDDVEFSC EDAGRTPIAD LARVVEAAIN AGATTINIPD TVGYTMPFEF AGIISGLYER VPNIDKAIIS VHTHDDLGLA VGNSLAAVHA GARQVEGAMN GIGERAGNCS LEEVIMAIKV RKDILNVHTA INHQEIWRTS QLVSQICNMP IPANKAIVGS GAFAHSSGIH QDGVLKNREN YEIMTPESIG LNQIQLNLTS RSGRAAVKHR MDEMGYKESE YNLDNLYDAF LKLADKKGQV FDYDLEALAF IGKQQEEPEH FRLDYFSVQS GSNDIATAAV KLACGEEVKA EAANGNGPVD AVYQAINRIT EYNVELVKYS LTAKGHGKDA LGQVDIVANY NGRRFHGVGL ATDIVESSAK AMVHVLNNIW RAAEVEKELQ RKAQHNENNK ETV; *Accession#: NP_414616.1; NC_000913.3; P09151; *NCBI Summary: 2-isopropylmalate synthase (LeuA) carries out the first step in leucine biosynthesis. [More information is available at EcoCyc: EG11226].