ID   FRIS_LYMST              Reviewed;         174 AA.
AC   P42577;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 2.
DT   03-AUG-2022, entry version 95.
DE   RecName: Full=Soma ferritin;
DE            EC=1.16.3.1;
OS   Lymnaea stagnalis (Great pond snail) (Helix stagnalis).
OC   Eukaryota; Metazoa; Spiralia; Lophotrochozoa; Mollusca; Gastropoda;
OC   Heterobranchia; Euthyneura; Panpulmonata; Hygrophila; Lymnaeoidea;
OC   Lymnaeidae; Lymnaea.
OX   NCBI_TaxID=6523;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   TISSUE=Visceral mass;
RX   PubMed=7517354; DOI=10.1111/j.1432-1033.1994.tb18874.x;
RA   von Darl M., Harrison M., Bottke W.;
RT   "cDNA cloning and deduced amino acid sequence of two ferritins: soma
RT   ferritin and yolk ferritin, from the snail Lymnaea stagnalis L.";
RL   Eur. J. Biochem. 222:353-366(1994).
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 12 or 24 subunits. The functional molecule is
CC       roughly spherical and contains a central cavity into which the
CC       polymeric mineral iron core is deposited (By similarity).
CC       {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm.
CC   -!- TISSUE SPECIFICITY: Expressed in somatic tissues but not in oocytes.
CC   -!- SIMILARITY: Belongs to the ferritin family. {ECO:0000305}.
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DR   EMBL; X56778; CAA40096.1; -; mRNA.
DR   PIR; S45603; S45603.
DR   AlphaFoldDB; P42577; -.
DR   SMR; P42577; -.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
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   Cytoplasm; Iron; Iron storage; Metal-binding; Oxidoreductase.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000305"
FT   CHAIN           2..174
FT                   /note="Soma ferritin"
FT                   /id="PRO_0000201070"
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   174 AA;  20140 MW;  2787604323BF702E CRC64;
     MSVSQARQNY HAESEAGINR QINMELYASY SYQSMAYYFD RDDVALPGFH KFFKHQSEEE
     REHAEKLMKY QNKRGGRIVL QDIKKPDRDE WGTGLEAMQV ALQLEKSVNQ SLLDLHKLCT
     SHDDAQMADF LESEFLEEQV KSIKELSDYI TNLKRVGPGL GEYIFDKETL SSSS