Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Core enzyme
Introduction
A core enzyme is a RNA polymerase enzyme without the sigma factor (σ). This enzyme consists of only two alpha (2α), one beta (β) and one beta prime (β’).