ID   FRIH2_SCHMA             Reviewed;         172 AA.
AC   P25320;
DT   01-MAY-1992, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1992, sequence version 1.
DT   03-AUG-2022, entry version 96.
DE   RecName: Full=Ferritin-2 heavy chain;
DE            EC=1.16.3.1;
GN   Name=SCM-2;
OS   Schistosoma mansoni (Blood fluke).
OC   Eukaryota; Metazoa; Spiralia; Lophotrochozoa; Platyhelminthes; Trematoda;
OC   Digenea; Strigeidida; Schistosomatoidea; Schistosomatidae; Schistosoma.
OX   NCBI_TaxID=6183;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RX   PubMed=1741011; DOI=10.1016/0166-6851(92)90221-5;
RA   Dietzel J., Hirzmann J., Preis D., Symmons P., Kunz W.;
RT   "Ferritins of Schistosoma mansoni: sequence comparison and expression in
RT   female and male worms.";
RL   Mol. Biochem. Parasitol. 50:245-254(1992).
CC   -!- FUNCTION: Stores iron in a soluble, non-toxic, readily available form.
CC       Important for iron homeostasis. Has ferroxidase activity. Iron is taken
CC       up in the ferrous form and deposited as ferric hydroxides after
CC       oxidation (By similarity). {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=4 Fe(2+) + 4 H(+) + O2 = 4 Fe(3+) + 2 H2O;
CC         Xref=Rhea:RHEA:11148, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:15379, ChEBI:CHEBI:29033, ChEBI:CHEBI:29034; EC=1.16.3.1;
CC   -!- SUBUNIT: Oligomer of 24 subunits. The functional molecule forms a
CC       roughly spherical shell with a diameter of 12 nm and contains a central
CC       cavity into which the insoluble mineral iron core is deposited (By
CC       similarity). {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the ferritin family. {ECO:0000305}.
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DR   EMBL; M64539; AAA29881.1; -; mRNA.
DR   PIR; A45628; A45628.
DR   AlphaFoldDB; P25320; -.
DR   SMR; P25320; -.
DR   STRING; 6183.Smp_047650.1; -.
DR   eggNOG; KOG2332; Eukaryota.
DR   HOGENOM; CLU_065681_4_0_1; -.
DR   Proteomes; UP000008854; Unassembled WGS sequence.
DR   GO; GO:0008199; F:ferric iron binding; IEA:InterPro.
DR   GO; GO:0004322; F:ferroxidase activity; IEA:UniProtKB-EC.
DR   GO; GO:0006879; P:cellular iron ion homeostasis; IEA:UniProtKB-KW.
DR   GO; GO:0006826; P:iron ion transport; IEA:InterPro.
DR   Gene3D; 1.20.1260.10; -; 1.
DR   InterPro; IPR001519; Ferritin.
DR   InterPro; IPR012347; Ferritin-like.
DR   InterPro; IPR009040; Ferritin-like_diiron.
DR   InterPro; IPR009078; Ferritin-like_SF.
DR   InterPro; IPR014034; Ferritin_CS.
DR   InterPro; IPR008331; Ferritin_DPS_dom.
DR   PANTHER; PTHR11431; PTHR11431; 1.
DR   Pfam; PF00210; Ferritin; 1.
DR   SUPFAM; SSF47240; SSF47240; 1.
DR   PROSITE; PS00540; FERRITIN_1; 1.
DR   PROSITE; PS00204; FERRITIN_2; 1.
DR   PROSITE; PS50905; FERRITIN_LIKE; 1.
PE   2: Evidence at transcript level;
KW   Iron; Iron storage; Metal-binding; Oxidoreductase; Reference proteome.
FT   CHAIN           1..172
FT                   /note="Ferritin-2 heavy chain"
FT                   /id="PRO_0000201083"
FT   DOMAIN          8..157
FT                   /note="Ferritin-like diiron"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT   BINDING         25
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT   BINDING         60
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT   BINDING         60
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT   BINDING         63
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT   BINDING         105
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT   BINDING         139
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
SQ   SEQUENCE   172 AA;  19688 MW;  1188E8CD20F16B69 CRC64;
     MSSSRARQSF ATECENAINK QINVELQAAY DYMAFFTYFD RDDVSFPKAA EFFRKASHEE
     REHAEKLAKY QNKRVGRVQY SDINGPTKTE FSSLEDAMNT ALGMEKAVSK SLLELHEVAS
     KNNDPALADF IESEFLHEQE DAIKQFADYL TETQRVGKGL GEYLFDKLTL NE