Catalyzes two activities which are involved in the biotine biosynthesis: the conversion of dethiobiotin (DTB) to biotin by the insertion of a sulfur atom into dethiobiotin via a radical-based mechanism, and the transfer of the alpha-amino group from S-adenosyl-L-methionine (SAM) to 7-keto-8-aminopelargonic acid (KAPA) to form 7,8-diaminopelargonic acid (DAPA). Full length recombinant protein corresponding to aa1-748 from Bacteroides fragilis (strain ATCC 25285/DSM 2151/CCUG 4856/JCM 11019/NCTC 9343/Onslow) Biotin biosynthesis bifunctional protein BioAB, fused to 10X His-Tag at N-terminal and Myc-Tag at C-terminal, expressed in E. coli. Swiss/Uniprot: Q5LEY1 Molecular Weight: ~90.6kD Amino Acid Sequence: MTIEEIKNQVLQGTAISREQAEWLALYPRKEELYDAAHDITTACASQEFDMCSIINARSGRCPENCKWCAQSSHYKTKADVYDLVSADECLRQAKYNEAQGVNRFSLVTSGRKPSPKNMKELCVAARRMRRHSSIRLCASLGLLDEEELQALYDAGVTRYHCNLETAPSHFDSLCTTHTQEQKLKTLHAARRVGMDLCCGGIIGMGETVEQRIEFAFTLRDLNIQSIPINLLQPIPGTPLEHQSPLSEEEILTTVALFRFINPAAYLRFAGGRSQLTPEAVRKSLYIGINSAIVGDLLTTLGSKVSDDKEMILSEGYHFADSQFDREHLWHPYTSTSNPLPVYKVKRADGATITLESGQTLIEGMSSWWCAVHGYNHPILNQAVQDQLSRMSHVMFGGLTHDPAIELGKLLLPLVPPSMQKIFYADSGSVAVEVALKMAVQYWYAAGKPEKNNFVTIRNGYHGDTWNAMSVCDPVTGMHSIFGSALPIRHFLPAPSSRFGDEWNPEDIRPLEYLLEKHADELAAFILEPIVQGAGGMRFYHPEYLKEAARLCHRYGVLLIFDEIATGFGRTGKLFAWEHAGVEPDIMCIGKALTGGYMTLSAVLTTNEVADCISNHAPGAFMHGPTFMGNPLACAVACASVRLLLTSGWQENVKRIEAQLNRELAPARELPQVADVRVLGAIGVIEMKEPVNMAYLQRRFVEEGIWLRPFGKLIYVMPPFIITPEQLTKLTEGMIRIISNGLPGSQTK Storage and Stability: Lyophilized and reconstituted products are stable for 6 months after receipt at -20C. Reconstitute with sterile ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Supplied as a lyophilized powder from 20mM Tris-HCl, 0.5M sodium chloride, pH 8.0, 6% trehalose. Reconstitute with sterile ddH2O to a concentration of 0.1-1mg/ml.
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