ID   ISCA_HAEIN              Reviewed;         107 AA.
AC   P44672;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1995, sequence version 1.
DT   03-AUG-2022, entry version 125.
DE   RecName: Full=Iron-binding protein IscA;
DE   AltName: Full=Iron-sulfur cluster assembly protein;
GN   Name=iscA; OrderedLocusNames=HI_0376;
OS   Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC   Pasteurellaceae; Haemophilus.
OX   NCBI_TaxID=71421;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 51907 / DSM 11121 / KW20 / Rd;
RX   PubMed=7542800; DOI=10.1126/science.7542800;
RA   Fleischmann R.D., Adams M.D., White O., Clayton R.A., Kirkness E.F.,
RA   Kerlavage A.R., Bult C.J., Tomb J.-F., Dougherty B.A., Merrick J.M.,
RA   McKenney K., Sutton G.G., FitzHugh W., Fields C.A., Gocayne J.D.,
RA   Scott J.D., Shirley R., Liu L.-I., Glodek A., Kelley J.M., Weidman J.F.,
RA   Phillips C.A., Spriggs T., Hedblom E., Cotton M.D., Utterback T.R.,
RA   Hanna M.C., Nguyen D.T., Saudek D.M., Brandon R.C., Fine L.D.,
RA   Fritchman J.L., Fuhrmann J.L., Geoghagen N.S.M., Gnehm C.L., McDonald L.A.,
RA   Small K.V., Fraser C.M., Smith H.O., Venter J.C.;
RT   "Whole-genome random sequencing and assembly of Haemophilus influenzae
RT   Rd.";
RL   Science 269:496-512(1995).
CC   -!- FUNCTION: Is able to transfer iron-sulfur clusters to apo-ferredoxin.
CC       Multiple cycles of [2Fe2S] cluster formation and transfer are observed,
CC       suggesting that IscA acts catalytically. Recruits intracellular free
CC       iron so as to provide iron for the assembly of transient iron-sulfur
CC       cluster in IscU in the presence of IscS, L-cysteine and the thioredoxin
CC       reductase system (By similarity). {ECO:0000250}.
CC   -!- COFACTOR:
CC       Name=Fe cation; Xref=ChEBI:CHEBI:24875; Evidence={ECO:0000250};
CC       Note=Binds 2 iron ions per dimer. The dimer may bind additional iron
CC       ions. {ECO:0000250};
CC   -!- SIMILARITY: Belongs to the HesB/IscA family. {ECO:0000305}.
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DR   EMBL; L42023; AAC22033.1; -; Genomic_DNA.
DR   PIR; E64150; E64150.
DR   RefSeq; NP_438537.1; NC_000907.1.
DR   RefSeq; WP_005693788.1; NC_000907.1.
DR   AlphaFoldDB; P44672; -.
DR   SMR; P44672; -.
DR   STRING; 71421.HI_0376; -.
DR   EnsemblBacteria; AAC22033; AAC22033; HI_0376.
DR   KEGG; hin:HI_0376; -.
DR   PATRIC; fig|71421.8.peg.394; -.
DR   eggNOG; COG0316; Bacteria.
DR   HOGENOM; CLU_069054_5_1_6; -.
DR   OMA; GYQYGMA; -.
DR   PhylomeDB; P44672; -.
DR   BioCyc; HINF71421:G1GJ1-389-MON; -.
DR   Proteomes; UP000000579; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IBA:GO_Central.
DR   GO; GO:0005829; C:cytosol; IBA:GO_Central.
DR   GO; GO:0051537; F:2 iron, 2 sulfur cluster binding; IBA:GO_Central.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0016226; P:iron-sulfur cluster assembly; IBA:GO_Central.
DR   GO; GO:0097428; P:protein maturation by iron-sulfur cluster transfer; IBA:GO_Central.
DR   Gene3D; 2.60.300.12; -; 1.
DR   InterPro; IPR000361; FeS_biogenesis.
DR   InterPro; IPR016092; FeS_cluster_insertion.
DR   InterPro; IPR017870; FeS_cluster_insertion_CS.
DR   InterPro; IPR035903; HesB-like_dom_sf.
DR   InterPro; IPR011302; IscA_proteobacteria.
DR   Pfam; PF01521; Fe-S_biosyn; 1.
DR   SUPFAM; SSF89360; SSF89360; 1.
DR   TIGRFAMs; TIGR02011; IscA; 1.
DR   TIGRFAMs; TIGR00049; TIGR00049; 1.
DR   PROSITE; PS01152; HESB; 1.
PE   3: Inferred from homology;
KW   Iron; Metal-binding; Reference proteome.
FT   CHAIN           1..107
FT                   /note="Iron-binding protein IscA"
FT                   /id="PRO_0000077009"
FT   BINDING         35
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /evidence="ECO:0000250"
FT   BINDING         99
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /evidence="ECO:0000250"
FT   BINDING         101
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   107 AA;  11722 MW;  DC420D931D497992 CRC64;
     MGITLTEKAA QRVKAFLDNR GKGIGLRLGV KTSGCSGLAY VLEFVDVLNS EDQVFEQYGV
     NIIVDPKSLV YLNGIELDYV KEGLNEGFKY NNPNVKESCG CGESFHV