Synonyms:H1FT, H1T Background:Testis-specific histone H1 that forms less compacted chromatin compared to other H1 histone subtypes(PubMed:26757249). Formation of more relaxed chromatin may be required to promote chromatin architecture required for proper chromosome regulation during meiosis, such as homologous recombination(PubMed:26757249). Histones H1 act as linkers that bind to nucleosomes and compact polynucleosomes into a higher-order chromatin configuration(Probable).