ID   PHI1_MYTED              Reviewed;          92 AA.
AC   Q04621;
DT   01-JUN-1994, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 2.
DT   03-AUG-2022, entry version 46.
DE   RecName: Full=Sperm-specific protein Phi-1;
OS   Mytilus edulis (Blue mussel).
OC   Eukaryota; Metazoa; Spiralia; Lophotrochozoa; Mollusca; Bivalvia;
OC   Autobranchia; Pteriomorphia; Mytilida; Mytiloidea; Mytilidae; Mytilinae;
OC   Mytilus.
OX   NCBI_TaxID=6550;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   TISSUE=Sperm;
RX   PubMed=8332480; DOI=10.1093/nar/21.11.2774;
RA   Ruiz-Lara S., Prats E., Casas M.T., Cornudella L.;
RT   "Molecular cloning and sequence of a cDNA for the sperm-specific protein
RT   phi 1 from the mussel Mytilus edulis.";
RL   Nucleic Acids Res. 21:2774-2774(1993).
CC   -!- FUNCTION: Involved in nuclear basic protein transition: histones are
CC       replaced by spermatid specific proteins which are themselves replaced
CC       by protamines in late spermatids.
CC   -!- SUBCELLULAR LOCATION: Nucleus. Chromosome.
CC   -!- TISSUE SPECIFICITY: Sperm.
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DR   EMBL; X69718; CAA49375.1; -; mRNA.
DR   PIR; S34115; S34115.
DR   AlphaFoldDB; Q04621; -.
DR   SMR; Q04621; -.
DR   PRIDE; Q04621; -.
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:0007283; P:spermatogenesis; IEA:UniProtKB-KW.
PE   2: Evidence at transcript level;
KW   Chromosome; Developmental protein; Differentiation; DNA-binding;
KW   Nucleosome core; Nucleus; Spermatogenesis.
FT   INIT_MET        1
FT                   /note="Removed"
FT   CHAIN           2..92
FT                   /note="Sperm-specific protein Phi-1"
FT                   /id="PRO_0000106635"
FT   REGION          1..92
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        32..92
FT                   /note="Basic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   92 AA;  10498 MW;  9C879F16B57D92BB CRC64;
     MPSPTRRSSK SRSKSRSRSR SASASPGKAA KRARSKTPRR GKKRARSPSK KARRRSRSTK
     KTAAKRRKRS SSPKKRRSAG KRRVRAKKKK KK