How to name polypeptides...?

Question

I realize the general rules for naming small polypeptides i.e. drop the -ine and add -yl. leucyl-prolyl-tryptophan... what to you do when one of the middle ones is glutamic acid?

Answer 1

You have everthing correct about the way to name the peptides.

In the case where you have a complex one like glutamic acid, you'd do exactly the same thing, substitute glutamic acid with glutamyl - and keep going.

I'm assumming that this thing is in the chain of the peptide itself and not as a substituent group on any adjacent carbon.

If that were the case the WHOLE peptide would be proceed with a (x-iupacname of glutamic acid)-peptide name.

where x is the carbon atom it was attached to.