FC2 is one of two ferrochelatase genes in Arabidopsis. Ferrochelatase is the terminal enzyme of heme biosynthesis. FC-II is speculated to operate in photosynthetic cytochromes.
slr1181 (PsbA1) is a Photosystem II (PSII) D1 reaction center protein located in the thylakoid membrane. It is one of three D1 isoforms in Synechocystis 6803, is expressed primarily under micro‑aerobic conditions, and is also known as D1′.
Sulfur nutrition is crucial for plant growth and development, as well as crop yield and quality. APS2 is involved in step 1 of the subpathway that synthesizes sulfite from sulfate.
CHLM, MAGNESIUM-PROTOPORPHYRIN IX METHYLTRANSFERASE
Background:
CHLM is a chloroplast enzyme that methylates magnesium protoporphyrin IX, a key step in chlorophyll biosynthesis. Loss of its function impairs chlorophyll production and the accumulation of major photosynthetic complexes in the thylakoid membrane.