Reaction: propanal + CoA + NAD+ = propanoyl-CoA + NADH + H+
Other name(s): BphJ
Systematic name: propanal:NAD+ oxidoreductase (CoA-propanoylating)
Comments: The enzyme forms a bifunctional complex with EC 22.214.171.124, 4-hydroxy-2-oxohexanoate aldolase, with a tight channel connecting the two subunits [1,2,3]. Also acts, more slowly, on glycolaldehyde and butanal. In Pseudomonas species the enzyme forms a bifunctional complex with EC 126.96.36.199, 4-hydroxy-2-oxovalerate aldolase. The enzymes from the bacteria Burkholderia xenovorans and Thermus thermophilus also perform the reaction of EC 188.8.131.52, acetaldehyde dehydrogenase (acetylating). NADP+ can replace NAD+ with a much slower rate .
Links to other databases: BRENDA, EXPASY, KEGG Metacyc, CAS registry number:
1. Baker, P., Pan, D., Carere, J., Rossi, A., Wang, W. and Seah, S.Y.K. Characterization of an aldolase-dehydrogenase complex that exhibits substrate channeling in the polychlorinated biphenyls degradation pathway. Biochemistry 48 (2009) 6551-6558. [PMID: 19476337]
2. Carere, J., Baker, P. and Seah, S.Y.K. Investigating the molecular determinants for substrate channeling in BphI-BphJ, an aldolase-dehydrogenase complex from the polychlorinated biphenyls degradation pathway. Biochemistry 50 (2011) 8407-8416. [PMID: 21838275]
3. Baker, P., Hillis, C., Carere, J. and Seah, S.Y.K. Protein-protein interactions and substrate channeling in orthologous and chimeric aldolase-dehydrogenase complexes. Biochemistry 51 (2012) 1942-1952. [PMID: 22316175]