Protamine-2 (Sperm histone P2) (Sperm protamine P2) [Cleaved into: Basic nuclear protein HPI1; Basic nuclear protein HPI2; Basic nuclear protein HPS1; Basic nuclear protein HPS2; Sperm histone HP4 (Sperm protamine P4); Sperm histone HP2 (Sperm protamine P2) (P2'); Sperm histone HP3 (P2'') (Sperm protamine P3)]
1_MVRYR 6_ VRSLS 11_ ERSHE 16_ VYRQQ 21_ LHGQE 26_ QGHHG 31_ QEEQG 36_ LSPEH 41_ VEVYE 46_ RTHGQ 51_ SHYRR 56_ RHCSR 61_ RRLHR 66_ IHRRQ 71_ HRSCR 76_ RRKRR 81_ SCRHR 86_ RRHRR 91_ GCRTR 96_KRTCR
1: Protamines substitute for histones in the chromatin of sperm during the haploid phase of spermatogenesis. They compact sperm DNA into a highly condensed, stable and inactive complex