FRI2_VIGUN
ID FRI2_VIGUN Reviewed; 250 AA.
AC Q41709;
DT 11-APR-2003, integrated into UniProtKB/Swiss-Prot.
DT 01-NOV-1998, sequence version 2.
DT 03-AUG-2022, entry version 98.
DE RecName: Full=Ferritin-2, chloroplastic;
DE EC=1.16.3.1;
DE Flags: Precursor;
GN Name=PFE2;
OS Vigna unguiculata (Cowpea).
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC rosids; fabids; Fabales; Fabaceae; Papilionoideae; 50 kb inversion clade;
OC NPAAA clade; indigoferoid/millettioid clade; Phaseoleae; Vigna.
OX NCBI_TaxID=3917;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RC STRAIN=cv. N41; TISSUE=Leaf;
RX PubMed=9895297; DOI=10.1042/bj3370523;
RA Wardrop A.J., Wicks R.E., Entsch B.;
RT "Occurrence and expression of members of the ferritin gene family in
RT cowpeas.";
RL Biochem. J. 337:523-530(1999).
RN [2]
RP NUCLEOTIDE SEQUENCE OF 53-123.
RC STRAIN=cv. N41; TISSUE=Leaf;
RX PubMed=8484787; DOI=10.1006/bbrc.1993.1487;
RA Wicks R.E., Entsch B.;
RT "Functional genes found for three different plant ferritin subunits in the
RT legume, Vigna unguiculata.";
RL Biochem. Biophys. Res. Commun. 192:813-819(1993).
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. There are two types of subunits: L
CC (light) chain and H (heavy) chain. The major chain can be light or
CC heavy, depending on the species and tissue type. The functional
CC molecule forms a roughly spherical shell with a diameter of 12 nm and
CC contains a central cavity into which the insoluble mineral iron core is
CC deposited (By similarity). {ECO:0000250}.
CC -!- SUBCELLULAR LOCATION: Plastid, chloroplast.
CC -!- SIMILARITY: Belongs to the ferritin family. {ECO:0000305}.
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DR EMBL; AF052058; AAC06027.1; -; mRNA.
DR EMBL; X67755; CAA47983.1; -; Genomic_DNA.
DR PIR; PQ0614; PQ0614.
DR PIR; T08124; T08124.
DR AlphaFoldDB; Q41709; -.
DR SMR; Q41709; -.
DR GO; GO:0009507; C:chloroplast; 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; PS00204; FERRITIN_2; 1.
DR PROSITE; PS50905; FERRITIN_LIKE; 1.
PE 2: Evidence at transcript level;
KW Chloroplast; Iron; Iron storage; Metal-binding; Oxidoreductase; Plastid;
KW Transit peptide.
FT TRANSIT 1..43
FT /note="Chloroplast"
FT /evidence="ECO:0000255"
FT CHAIN 44..250
FT /note="Ferritin-2, chloroplastic"
FT /id="PRO_0000008870"
FT DOMAIN 77..230
FT /note="Ferritin-like diiron"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT REGION 44..76
FT /note="Extension peptide (EP)"
FT BINDING 94
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT BINDING 129
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT BINDING 129
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT BINDING 132
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT BINDING 178
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT BINDING 212
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
SQ SEQUENCE 250 AA; 28041 MW; 7A5E7AE5024B0656 CRC64;
MLLRTAAASS LSLFNPNAEP SRSVPVLANN ASRLVVRAAK GSTNHRALTG VIFEPFEEVK
KELDLVPTVP QASLARQKYV DESEAAVNEQ INVEYNVSYV YHALFAYFDR DNVALRGLAK
FFKESSEEER EHAEKLMEYQ NRRGGKVKLQ SIVMPLSEFD HADKGDALHA MELALSLEKL
TNEKLLHLHS VATKNGDVQL ADFVESEFLG EQVESIKRIS EYVAQLRRVG KGHGVWHFDQ
MLLHEGGHLA