HIST2H3A


Histone cluster 2 H3 family member a is a protein that in humans is encoded by the HIST2H3A gene.

Function

s are basic nuclear proteins that are responsible for the nucleosome structure of the chromosomal fiber in eukaryotes. This structure consists of approximately 146 bp of DNA wrapped around a nucleosome, an octamer composed of pairs of each of the four core histones. The chromatin fiber is further compacted through the interaction of a linker histone, H1, with the DNA between the nucleosomes to form higher order chromatin structures. This gene is intronless and encodes a replication-dependent histone that is a member of the histone H3 family. Transcripts from this gene lack polyA tails; instead, they contain a palindromic termination element. This gene is found in a histone cluster on human chromosome 1. This gene is one of four histone genes in the cluster that are duplicated; this record represents the centromeric copy. .