PEP — Zea mays

Summary

ZmPEP (ZM00001EB223080) on maize chromosome 5 encodes a KH domain-containing protein with RNA and mRNA binding activity. The gene is associated with C4 photosynthesis, bundle sheath cell differentiation, photorespiration, chlorophyll fluorescence, plastid transcription, and pigmentation. It has been linked to carbon isotope discrimination, net photosynthetic rate, water use efficiency, stomatal resistance, respiration rate, chlorophyll content, leaf color and position, and pollen fertility. The encoded protein localizes to the cytoplasm and nucleus and is associated with mRNA breakdown, RNA splicing, sexual reproduction, fermentation, excretion, and NO storage. Studies of related genes in other species link the family to grain weight, grain yield, seed germination, heterosis, transpiration rate, quantum yield, and self-incompatibility.