BIP — Zea mays

Summary

ZmBIP (also known as BIP1, BIP2, ZmHSP70-11, ZmHSP70-12) on maize chromosome 5 encodes a member of the Hsp70 family of ATP-dependent protein folding chaperones, containing BIP_NBD and HSP70_peptide-bd domains. The gene is associated with the cellular response to unfolded protein, protein folding in the endoplasmic reticulum, and localization to the ER lumen and chaperone complex. It has been linked to diverse agronomic traits including grain lysine content, floury endosperm, amylopectin content, anthesis-silking interval, plant dry weight, root fresh weight, leaf relative water content, net photosynthetic rate, stomatal resistance, and responses to temperature and osmotic stress. Associations also include male and female flowering, root hair length and development, trichome morphology, and auxin sensitivity. Studies of related genes in other species connect the family to seed storage protein accumulation, disease resistance, and cadmium stress tolerance.