Here's what rhymes with substrates.

Consider these alternatives

calcareous / ideas cofactors / factors enzymatic / dramatic pyruvate / pyruvat substituents / constituents alkaline / line carbonate / late adenosine / seen residues / whose glycerol / whole phosphorylation / relation ions / science polymerization / information loam / home phosphorylated / related diphosphate / phosphate glycine / lysine aldehyde / side