Magnesium-Chelatase from Developing Pea Leaves1 Characterization of a Soluble Extract from Chloroplasts and Resolution into Three Required Protein Fractions

• Published in: Plant physiology (Bethesda) Vol. 116; no. 2; pp. 605 - 615
• Main Authors: Guo, Ribo, Luo, Meizhong, Weinstein, Jon D.
• Format: Journal Article
• Language: English
• Published: American Society of Plant Physiologists 01.02.1998

Mg-chelatase catalyzes the ATP-dependent insertion of Mg 2+ into protoporphyrin-IX to form Mg-protoporphyrin-IX. This is the first step unique to chlorophyll synthesis, and it lies at the branch point for porphyrin utilization; the other branch leads to heme. Using the stromal fraction of pea ( Pisu...