ID   HSP1_PLATE              Reviewed;          63 AA.
AC   O18748;
DT   15-JUL-1998, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 3.
DT   25-MAY-2022, entry version 55.
DE   RecName: Full=Sperm protamine P1;
GN   Name=PRM1;
OS   Planigale tenuirostris (Narrow-nosed planigale).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Metatheria; Dasyuromorphia; Dasyuridae; Planigale.
OX   NCBI_TaxID=32557;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=9299228; DOI=10.1006/mpev.1997.0421;
RA   Krajewski C., Blacket M., Buckley L., Westerman M.;
RT   "A multigene assessment of phylogenetic relationships within the dasyurid
RT   marsupial subfamily Sminthopsinae.";
RL   Mol. Phylogenet. Evol. 8:236-248(1997).
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.
CC   -!- SIMILARITY: Belongs to the protamine P1 family. {ECO:0000305}.
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DR   EMBL; AF001594; AAB91384.1; -; Genomic_DNA.
DR   AlphaFoldDB; O18748; -.
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   2: Evidence at transcript level;
KW   Chromosome; Developmental protein; Differentiation; DNA condensation;
KW   DNA-binding; Nucleosome core; Nucleus; Spermatogenesis.
FT   CHAIN           1..63
FT                   /note="Sperm protamine P1"
FT                   /id="PRO_0000191537"
FT   REGION          1..47
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   63 AA;  8439 MW;  F596FF8EB026A8BE CRC64;
     MARCRRHIRS RSRSRNQCQR RRRRSHYNRR RTYRRSRRHS RRRRVRRRGC SCRRCSRRRR
     RRC