Stuck on a problem? Get great tutoring at an affordable price with Chegg. Click here to join and get your 1st 30 minutes Free!

Spasmin

From Biology-Online Dictionary
Jump to: navigation, search

spasmin

(Science: protein) protein (20 kD) that forms the spasmoneme. Thought to change its shape when the calcium ion concentration rises and to revert when the calcium concentration falls: the reversible shape change is used as a motor mechanism.

contraction does not require aTP, relaxation does, probably to pump calcium ions back into the smooth endoplasmic reticulum.