What's the plural form of malonyltransferase? Here's the word you're looking for.
Answer
The noun malonyltransferase can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be malonyltransferase.
However, in more specific contexts, the plural form can also be malonyltransferases e.g. in reference to various types of malonyltransferases
or a collection of malonyltransferases.