The enzyme responsible for adding acetyl groups to histone proteins is called:
A)histone acetylase (HA).
B)histone deacetylase (HDAC).
C)histone acetylmethyltransferase (HAT).
D)histone acetyltransferase (HAT).
E)histone methyltransferase (HMT).

Question

Quizplus · Accepted Answer

The enzyme responsible for adding acetyl groups to histone proteins is called histone acetyltransferase (HAT). Choice A (histone acetylase) is a common abbreviation for HAT, but it is not the enzyme's official name. Choice B (histone deacetylase) is the enzyme responsible for removing acetyl groups from histone proteins. Choice C (histone acetylmethyltransferase) is not a real enzyme, and choice E (histone methyltransferase) is the enzyme responsible for adding methyl groups to histone proteins, not acetyl groups.

The Enzyme Responsible for Adding Acetyl Groups to Histone Proteins