ID   BFR_MYCLE               Reviewed;         159 AA.
AC   P43315;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1995, sequence version 1.
DT   04-NOV-2026, entry version 146.
DE   RecName: Full=Bacterioferritin;
DE            Short=BFR;
DE            EC=1.16.3.1;
DE   AltName: Full=Major membrane protein II;
DE            Short=MMP-II;
GN   Name=bfr; Synonyms=bfrA; OrderedLocusNames=ML2038;
OS   Mycobacterium leprae (strain TN).
OC   Bacteria; Bacillati; Actinomycetota; Actinomycetes; Mycobacteriales;
OC   Mycobacteriaceae; Mycobacterium.
OX   NCBI_TaxID=272631;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND PARTIAL PROTEIN SEQUENCE.
RX   PubMed=8006590; DOI=10.1084/jem.180.1.319;
RA   Pessolani M.C.V., Smith D.R., Rivoire B., McCormick J., Hefta S.A.,
RA   Cole S.T., Brennan P.J.;
RT   "Purification, characterization, gene sequence, and significance of a
RT   bacterioferritin from Mycobacterium leprae.";
RL   J. Exp. Med. 180:319-327(1994).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=TN;
RX   PubMed=11234002; DOI=10.1038/35059006;
RA   Cole S.T., Eiglmeier K., Parkhill J., James K.D., Thomson N.R.,
RA   Wheeler P.R., Honore N., Garnier T., Churcher C.M., Harris D.E.,
RA   Mungall K.L., Basham D., Brown D., Chillingworth T., Connor R.,
RA   Davies R.M., Devlin K., Duthoy S., Feltwell T., Fraser A., Hamlin N.,
RA   Holroyd S., Hornsby T., Jagels K., Lacroix C., Maclean J., Moule S.,
RA   Murphy L.D., Oliver K., Quail M.A., Rajandream M.A., Rutherford K.M.,
RA   Rutter S., Seeger K., Simon S., Simmonds M., Skelton J., Squares R.,
RA   Squares S., Stevens K., Taylor K., Whitehead S., Woodward J.R.,
RA   Barrell B.G.;
RT   "Massive gene decay in the leprosy bacillus.";
RL   Nature 409:1007-1011(2001).
RN   [3]
RP   PRELIMINARY PROTEIN SEQUENCE OF 1-14.
RX   PubMed=2201679; DOI=10.1016/s0021-9258(18)77267-0;
RA   Hunter S.W., Rivoire B., Mehra V., Bloom B.R., Brennan P.J.;
RT   "The major native proteins of the leprosy bacillus.";
RL   J. Biol. Chem. 265:14065-14068(1990).
CC   -!- FUNCTION: Iron-storage protein, whose ferroxidase center binds Fe(2+),
CC       oxidizes it using dioxygen to Fe(3+), and participates in the
CC       subsequent Fe(3+) oxide mineral core formation within the central
CC       cavity of the BFR protein shell (By similarity). Probably plays a
CC       crucial role in the intracellular existence of this organism by
CC       functioning as a temporary depository for iron in iron deprivation.
CC       {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=4 Fe(2+) + O2 + 4 H(+) = 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   -!- CATALYTIC ACTIVITY:
CC       Reaction=Fe(2+)(in) = Fe(2+)(out); Xref=Rhea:RHEA:28486,
CC         ChEBI:CHEBI:29033; Evidence={ECO:0000250|UniProtKB:Q9HWF9};
CC   -!- COFACTOR:
CC       Name=heme b; Xref=ChEBI:CHEBI:60344; Evidence={ECO:0000250};
CC       Note=Binds 1 heme b (iron(II)-protoporphyrin IX) group per dimer.
CC       {ECO:0000250};
CC   -!- SUBUNIT: Homooligomer of 24 subunits, arranged as 12 dimers, that are
CC       packed together to form an approximately spherical molecule with a
CC       central cavity, in which large amounts of iron can be deposited.
CC       {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm, cytosol {ECO:0000305}. Membrane
CC       {ECO:0000305}; Peripheral membrane protein {ECO:0000305}. Note=Soluble
CC       or peripheral membrane protein. {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the bacterioferritin family. {ECO:0000305}.
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DR   EMBL; L01095; AAA21339.1; -; Genomic_DNA.
DR   EMBL; AL583924; CAC30993.1; -; Genomic_DNA.
DR   PIR; A87164; A87164.
DR   RefSeq; WP_010908683.1; NC_002677.1.
DR   AlphaFoldDB; P43315; -.
DR   SMR; P43315; -.
DR   STRING; 272631.gene:17575890; -.
DR   KEGG; mle:ML2038; -.
DR   PATRIC; fig|272631.5.peg.3840; -.
DR   Leproma; ML2038; -.
DR   eggNOG; COG2193; Bacteria.
DR   HOGENOM; CLU_104506_2_0_11; -.
DR   OMA; AAIIQYM; -.
DR   OrthoDB; 9800505at2; -.
DR   Proteomes; UP000000806; Chromosome.
DR   GO; GO:0005829; C:cytosol; IEA:UniProtKB-SubCell.
DR   GO; GO:0016020; C:membrane; 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:0020037; F:heme binding; IEA:TreeGrafter.
DR   GO; GO:0006879; P:intracellular iron ion homeostasis; IEA:InterPro.
DR   GO; GO:0006826; P:iron ion transport; IEA:InterPro.
DR   CDD; cd00907; Bacterioferritin; 1.
DR   FunFam; 1.20.1260.10:FF:000005; Bacterioferritin; 1.
DR   Gene3D; 1.20.1260.10; -; 1.
DR   InterPro; IPR002024; Bacterioferritin.
DR   InterPro; IPR012347; Ferritin-like.
DR   InterPro; IPR009040; Ferritin-like_diiron.
DR   InterPro; IPR009078; Ferritin-like_SF.
DR   InterPro; IPR008331; Ferritin_DPS_dom.
DR   NCBIfam; TIGR00754; bfr; 1.
DR   PANTHER; PTHR30295; BACTERIOFERRITIN; 1.
DR   PANTHER; PTHR30295:SF0; BACTERIOFERRITIN; 1.
DR   Pfam; PF00210; Ferritin; 1.
DR   PIRSF; PIRSF002560; Bacterioferritin; 1.
DR   PRINTS; PR00601; BACFERRITIN.
DR   SUPFAM; SSF47240; Ferritin-like; 1.
DR   PROSITE; PS00549; BACTERIOFERRITIN; 1.
DR   PROSITE; PS50905; FERRITIN_LIKE; 1.
PE   1: Evidence at protein level;
KW   Cytoplasm; Direct protein sequencing; Heme; Iron; Iron storage; Membrane;
KW   Metal-binding; Oxidoreductase; Reference proteome.
FT   CHAIN           1..159
FT                   /note="Bacterioferritin"
FT                   /id="PRO_0000192599"
FT   DOMAIN          1..145
FT                   /note="Ferritin-like diiron"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT   BINDING         18
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT   BINDING         51
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT   BINDING         51
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT   BINDING         52
FT                   /ligand="heme b"
FT                   /ligand_id="ChEBI:CHEBI:60344"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /ligand_part="Fe"
FT                   /ligand_part_id="ChEBI:CHEBI:18248"
FT                   /note="axial binding residue"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT   BINDING         54
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT   BINDING         94
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT   BINDING         127
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT   BINDING         127
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
FT   BINDING         130
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00085"
SQ   SEQUENCE   159 AA;  18263 MW;  D07C474A65E3AD64 CRC64;
     MQGDPDVLRL LNEQLTSELT AINQYFLHSK MQENWGFTEL AERTRVESFD EMRHAEAITD
     RILLLDGLPN YQRIGSLRVG QTLREQFEAD LAIEYEVMSR LKPGIIMCRE KQDSTSAVLL
     EKIVADEEEH IDYLETQLAL MGQLGEELYS AQCVSRPPS
//