Professional.

plural of pro

A surname from Spanish.

agreeing with; supporting; favouring / substituting for

forward movement

earlier; prior / rudimentary / in front of

someone who earns money doing something they are particularly good at

In favour of a military solution to a political problem

(biochemistry) Any inactive protein that can be activated by posttranslational modification

(biochemistry) Any inactive peptide that can be activated by posttranslational modification