ID   H1S_STRPU               Reviewed;          34 AA.
AC   P19376;
DT   01-NOV-1990, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1990, sequence version 1.
DT   25-MAY-2022, entry version 53.
DE   RecName: Full=Histone H1, sperm;
DE   Flags: Fragment;
OS   Strongylocentrotus purpuratus (Purple sea urchin).
OC   Eukaryota; Metazoa; Echinodermata; Eleutherozoa; Echinozoa; Echinoidea;
OC   Euechinoidea; Echinacea; Camarodonta; Echinidea; Strongylocentrotidae;
OC   Strongylocentrotus.
OX   NCBI_TaxID=7668;
RN   [1]
RP   PROTEIN SEQUENCE.
RX   PubMed=2538294; DOI=10.1016/0305-0491(89)90296-4;
RA   Porter D.C., Moy G.W., Vacquier V.D.;
RT   "The amino terminal sequence of sea urchin sperm histone H1 and its
RT   phosphorylation by egg cytosol.";
RL   Comp. Biochem. Physiol. 92B:381-384(1989).
CC   -!- FUNCTION: Histones H1 are necessary for the condensation of nucleosome
CC       chains into higher-order structures.
CC   -!- SUBCELLULAR LOCATION: Nucleus. Chromosome.
CC   -!- TISSUE SPECIFICITY: Sperm.
CC   -!- SIMILARITY: Belongs to the histone H1/H5 family. {ECO:0000305}.
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DR   AlphaFoldDB; P19376; -.
DR   eggNOG; KOG4012; Eukaryota.
DR   HOGENOM; CLU_052897_1_2_1; -.
DR   Proteomes; UP000007110; Unassembled WGS sequence.
DR   GO; GO:0005694; C:chromosome; IEA:UniProtKB-SubCell.
DR   GO; GO:0005634; C:nucleus; IEA:UniProtKB-SubCell.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
PE   1: Evidence at protein level;
KW   Chromosome; Direct protein sequencing; DNA-binding; Nucleus;
KW   Reference proteome.
FT   CHAIN           1..>34
FT                   /note="Histone H1, sperm"
FT                   /id="PRO_0000195948"
FT   REGION          1..34
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        10..34
FT                   /note="Basic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   NON_TER         34
SQ   SEQUENCE   34 AA;  3738 MW;  F49BE193DB785A8C CRC64;
     PASPQKRAAS PRRSPKKSPR KSPKKSPRKR SASP