H2B — Brassica oleracea var. botrytis

Summary

BoH2B (BOLND125_C02P015160.1) on cauliflower chromosome 2 encodes a histone H2B family protein, a core structural constituent of chromatin with DNA-binding and protein-heterodimerization activities, and is also annotated with DNA transmethylase and N-methyltransferase activities. The gene is associated with nucleosome assembly, DNA methylation-dependent heterochromatin assembly, and epigenetic regulation of gene expression. It has been linked to responses to salt, wounding, bacteria, and fungi, as well as to traits including drought tolerance, seed dormancy, auxin content, and plant growth and development. Localisation evidence connects the product to the nucleus, nucleolus, cytosol, plastid, chloroplast thylakoid and stroma, and plasmodesmata. Studies of related genes in other species link the family to chromatin structure and transformation efficiency.