| Description | Methylmalonate-semialdehyde dehydrogenase (MMSDH, ) catalyses the irreversible NAD+- and CoA-dependent oxidative decarboxylation of methylmalonate semialdehyde to propionyl-CoA. Methylmalonate-semialdehyde dehydrogenase has been characterised in both prokaryotes [ , ] and eukaryotes [], functioning as a mammalian tetramer and a bacterial homodimer. Although similar in monomeric molecular mass and enzymatic activity, the N-terminal sequence in Pseudomonas aeruginosa does not correspond with the N-terminal sequence predicted for rat liver. Sequence homology to a variety of prokaryotic and eukaryotic aldehyde dehydrogenases places MMSDH in the aldehyde dehydrogenase (NAD+) superfamily making MMSDH's CoA requirement unique among known ALDHs. Methylmalonate semialdehyde dehydrogenase is closely related to betaine aldehyde dehydrogenase, 2-hydroxymuconic semialdehyde dehydrogenase, and class 1 and 2 aldehyde dehydrogenase [].This entry represents the Gram-positive proteins involved in inositol metabolism [ ]. | Name | Methylmalonate-semialdehyde dehydrogenase, Gram-positive bacteria |
| Short Name | MSDH_GmP_bac | Type | Family |
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