IPA: //ˈkæl.məˌdjuː.lɪn//
KK: /kælˈmoʊdʒʊlɪn/
A protein that binds calcium and helps control various cellular processes, including muscle contraction, by influencing the activity of certain enzymes that depend on calcium.
Calmodulin plays a crucial role in muscle contraction by activating enzymes that respond to calcium levels.
Calmodulin is formed from "calcium" (from Latin "calx", meaning lime or calcium) and "modulin" (derived from the word "modulate", meaning to adjust or regulate). The word refers to a protein that regulates various cellular processes in response to calcium levels.
Think of 'calcium' as the key element that 'regulates' ('modulin') many functions in the body, which helps you remember that calmodulin is a protein that adjusts cellular activities based on calcium.