function:In the elongating spermatids of mammals, the conversion of nucleosomal chromatin to the compact, non-nucleosomal form found in the sperm nucleus is associated with the appearance of a small set of basic chromosomal transition proteins.,similarity:Belongs to the nuclear transition protein 1 family.,tissue specificity:Testis.,
Nucleus . Chromosome . Loaded onto the nucleosomes of condensing spermatids. .
Expressed by spermatids (at protein level).