ID   PRT_PERFV               Reviewed;          34 AA.
AC   P29629;
DT   01-APR-1993, integrated into UniProtKB/Swiss-Prot.
DT   01-APR-1993, sequence version 1.
DT   25-MAY-2022, entry version 48.
DE   RecName: Full=Protamine;
OS   Perca flavescens (American yellow perch) (Morone flavescens).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC   Actinopterygii; Neopterygii; Teleostei; Neoteleostei; Acanthomorphata;
OC   Eupercaria; Perciformes; Percoidei; Percidae; Percinae; Perca.
OX   NCBI_TaxID=8167;
RN   [1]
RP   PROTEIN SEQUENCE.
RX   PubMed=1544489; DOI=10.1016/0014-5793(92)80239-d;
RA   Chao H., Davies P.L.;
RT   "Amino acid sequence of the unique protamine from yellow perch.";
RL   FEBS Lett. 299:166-168(1992).
CC   -!- FUNCTION: Protamines substitute for histones in the chromatin of sperm
CC       during the haploid phase of spermatogenesis. They compact sperm DNA
CC       into a highly condensed, stable and inactive complex.
CC   -!- SUBCELLULAR LOCATION: Nucleus. Chromosome.
CC   -!- TISSUE SPECIFICITY: Testis.
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DR   PIR; S20439; S20439.
DR   AlphaFoldDB; P29629; -.
DR   GO; GO:0000786; C:nucleosome; IEA:UniProtKB-KW.
DR   GO; GO:0005634; C:nucleus; IEA:UniProtKB-SubCell.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0030154; P:cell differentiation; IEA:UniProtKB-KW.
DR   GO; GO:0030261; P:chromosome condensation; IEA:UniProtKB-KW.
DR   GO; GO:0007283; P:spermatogenesis; IEA:UniProtKB-KW.
PE   1: Evidence at protein level;
KW   Chromosome; Developmental protein; Differentiation;
KW   Direct protein sequencing; DNA condensation; DNA-binding; Nucleosome core;
KW   Nucleus; Spermatogenesis.
FT   PEPTIDE         1..34
FT                   /note="Protamine"
FT                   /id="PRO_0000044835"
FT   REGION          1..34
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   34 AA;  4552 MW;  EEFF4E0F87C6B2DE CRC64;
     PRRRRHAARP VRRRRRTRRS SRVHRRRRAV RRRR