[molecular_function] 4-trimethylammoniobutyraldehyde dehydrogenase activity <sep> aldehyde dehydrogenase (NAD+) activity <sep> amine binding <sep> aminobutyraldehyde dehydrogenase activity <sep> formaldehyde dehydrogenase activity <sep> glyceraldehyde-3-phosphate dehydrogenase (NAD+) (non-phosphorylating) activity <sep> identical protein binding <sep> NAD binding <sep> oxidoreductase activity, acting on the aldehyde or oxo group of donors, NAD or NADP as acceptor