IUBMB Enzyme Nomenclature


Accepted name: lysine—8-amino-7-oxononanoate transaminase

Reaction: L-lysine + 8-amino-7-oxononanoate = (S)-2-amino-6-oxohexanoate + 7,8-diaminononanoate

Glossary: (S)-2-amino-6-oxohexanoate = L-2-aminoadipate 6-semialdehyde = L-allysine

Other name(s): DAPA aminotransferase (ambiguous); bioA (gene name) (ambiguous); bioK (gene name)

Systematic name: L-lysine:8-amino-7-oxononanoate aminotransferase

Comments: A pyridoxal 5'-phosphate enzyme [2]. Participates in the pathway for biotin biosynthesis. The enzyme from the bacterium Bacillus subtilis cannot use S-adenosyl-L-methionine as amino donor and catalyses an alternative reaction for the conversion of 8-amino-7-oxononanoate to 7,8-diaminononanoate (cf. EC, adenosylmethionine—8-amino-7-oxononanoate transaminase).

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number:


1. Van Arsdell, S.W., Perkins, J.B., Yocum, R.R., Luan, L., Howitt, C.L., Chatterjee, N.P. and Pero, J.G. Removing a bottleneck in the Bacillus subtilis biotin pathway: bioA utilizes lysine rather than S-adenosylmethionine as the amino donor in the KAPA-to-DAPA reaction. Biotechnol. Bioeng. 91 (2005) 75-83. [PMID: 15880481]

2. Dey, S., Lane, J.M., Lee, R.E., Rubin, E.J. and Sacchettini, J.C. Structural characterization of the Mycobacterium tuberculosis biotin biosynthesis enzymes 7,8-diaminopelargonic acid synthase and dethiobiotin synthetase. Biochemistry 49 (2010) 6746-6760. [PMID: 20565114]

[EC created 2014]

Return to EC 2.6.1 home page
Return to EC 2.6 home page
Return to EC 2 home page
Return to Enzymes home page
Return to IUBMB Biochemical Nomenclature home page