ID   PHI1_MYTCA              Reviewed;          35 AA.
AC   P35422;
DT   01-JUN-1994, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-1994, sequence version 1.
DT   03-AUG-2022, entry version 44.
DE   RecName: Full=Sperm-specific protein Phi-1;
DE   AltName: Full=PL-III;
DE   AltName: Full=Sperm-specific protamine-like protein;
DE   Flags: Fragment;
OS   Mytilus californianus (California mussel).
OC   Eukaryota; Metazoa; Spiralia; Lophotrochozoa; Mollusca; Bivalvia;
OC   Autobranchia; Pteriomorphia; Mytilida; Mytiloidea; Mytilidae; Mytilinae;
OC   Mytilus.
OX   NCBI_TaxID=6549;
RN   [1]
RP   PROTEIN SEQUENCE.
RC   TISSUE=Sperm;
RX   PubMed=7677995; DOI=10.1016/s0021-9258(18)54132-6;
RA   Carlos S., Jutglar L., Borrell I., Hunt D.F., Ausio J.;
RT   "Sequence and characterization of a sperm-specific histone H1-like protein
RT   of Mytilus californianus.";
RL   J. Biol. Chem. 268:185-194(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   PIR; B45316; B45316.
DR   AlphaFoldDB; P35422; -.
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   1: Evidence at protein level;
KW   Chromosome; Developmental protein; Differentiation;
KW   Direct protein sequencing; DNA-binding; Nucleosome core; Nucleus;
KW   Spermatogenesis.
FT   CHAIN           1..>35
FT                   /note="Sperm-specific protein Phi-1"
FT                   /id="PRO_0000106636"
FT   REGION          1..35
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   NON_TER         35
SQ   SEQUENCE   35 AA;  3759 MW;  97459D27A76F4BD1 CRC64;
     PSPTRRSKSR SKSRSRSRSA SAGKAAKRAK SKTAK