ID   PRT_DICLA               Reviewed;          34 AA.
AC   Q9PS27;
DT   11-FEB-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-2000, sequence version 1.
DT   03-AUG-2022, entry version 40.
DE   RecName: Full=Protamine;
OS   Dicentrarchus labrax (European seabass) (Morone labrax).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC   Actinopterygii; Neopterygii; Teleostei; Neoteleostei; Acanthomorphata;
OC   Eupercaria; Moronidae; Dicentrarchus.
OX   NCBI_TaxID=13489;
RN   [1]
RP   PROTEIN SEQUENCE.
RC   TISSUE=Sperm;
RX   PubMed=8423442; DOI=10.1002/jez.1402650210;
RA   Saperas N., Ribes E., Buesa C., Garcia-Hegart F., Chiva M.;
RT   "Differences in chromatin condensation during spermiogenesis in two species
RT   of fish with distinct protamines.";
RL   J. Exp. Zool. 265:185-194(1993).
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   AlphaFoldDB; Q9PS27; -.
DR   Proteomes; UP000694389; Unplaced.
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; Reference proteome; Spermatogenesis.
FT   PEPTIDE         1..34
FT                   /note="Protamine"
FT                   /id="PRO_0000044831"
FT   REGION          1..34
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   34 AA;  4565 MW;  EEFF41CB25D1F0DE CRC64;
     PRRRRQASRP VRRRRRTRRS TAERRRRRVV RRRR