ISCA_XENNA
ID ISCA_XENNA Reviewed; 107 AA.
AC Q8GLE6; D3VLM6;
DT 22-NOV-2005, integrated into UniProtKB/Swiss-Prot.
DT 01-MAR-2003, sequence version 1.
DT 03-AUG-2022, entry version 95.
DE RecName: Full=Iron-binding protein IscA {ECO:0000255|HAMAP-Rule:MF_01429};
DE AltName: Full=Iron-sulfur cluster assembly protein {ECO:0000255|HAMAP-Rule:MF_01429};
GN Name=iscA {ECO:0000255|HAMAP-Rule:MF_01429}; OrderedLocusNames=XNC1_3300;
OS Xenorhabdus nematophila (strain ATCC 19061 / DSM 3370 / CCUG 14189 / LMG
OS 1036 / NCIMB 9965 / AN6).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC Morganellaceae; Xenorhabdus.
OX NCBI_TaxID=406817;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=ATCC 19061 / DSM 3370 / CCUG 14189 / LMG 1036 / NCIMB 9965 / AN6;
RX PubMed=12775707; DOI=10.1128/jb.185.12.3678-3682.2003;
RA Martens E.C., Gawronski-Salerno J., Vokal D.L., Pellitteri M.C.,
RA Menard M.L., Goodrich-Blair H.;
RT "Xenorhabdus nematophila requires an intact iscRSUA-hscBA-fdx operon to
RT colonize Steinernema carpocapsae nematodes.";
RL J. Bacteriol. 185:3678-3682(2003).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 19061 / DSM 3370 / CCUG 14189 / LMG 1036 / NCIMB 9965 / AN6;
RX PubMed=22125637; DOI=10.1371/journal.pone.0027909;
RA Chaston J.M., Suen G., Tucker S.L., Andersen A.W., Bhasin A., Bode E.,
RA Bode H.B., Brachmann A.O., Cowles C.E., Cowles K.N., Darby C., de Leon L.,
RA Drace K., Du Z., Givaudan A., Herbert Tran E.E., Jewell K.A., Knack J.J.,
RA Krasomil-Osterfeld K.C., Kukor R., Lanois A., Latreille P.,
RA Leimgruber N.K., Lipke C.M., Liu R., Lu X., Martens E.C., Marri P.R.,
RA Medigue C., Menard M.L., Miller N.M., Morales-Soto N., Norton S.,
RA Ogier J.C., Orchard S.S., Park D., Park Y., Qurollo B.A., Sugar D.R.,
RA Richards G.R., Rouy Z., Slominski B., Slominski K., Snyder H., Tjaden B.C.,
RA van der Hoeven R., Welch R.D., Wheeler C., Xiang B., Barbazuk B.,
RA Gaudriault S., Goodner B., Slater S.C., Forst S., Goldman B.S.,
RA Goodrich-Blair H.;
RT "The entomopathogenic bacterial endosymbionts xenorhabdus and photorhabdus:
RT convergent lifestyles from divergent genomes.";
RL PLoS ONE 6:E27909-E27909(2011).
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 TrxA/TrxB. {ECO:0000255|HAMAP-Rule:MF_01429}.
CC -!- COFACTOR:
CC Name=Fe cation; Xref=ChEBI:CHEBI:24875;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01429};
CC Note=Binds 2 iron ions per dimer. The dimer may bind additional iron
CC ions. {ECO:0000255|HAMAP-Rule:MF_01429};
CC -!- SUBUNIT: Homodimer; may form tetramers and higher multimers.
CC {ECO:0000255|HAMAP-Rule:MF_01429}.
CC -!- MISCELLANEOUS: A transposon insertion between iscA and hscB prevents
CC colonization of the nematode Steinernema carpocapsae. The insertion
CC disrupts cotranscription of iscA and hscB but does not reduce hscBA
CC expression, suggesting that coordinated expression of the isc-hsc-fdx
CC locus is required for colonization.
CC -!- SIMILARITY: Belongs to the HesB/IscA family. {ECO:0000255|HAMAP-
CC Rule:MF_01429}.
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DR EMBL; AY138456; AAN17747.1; -; Genomic_DNA.
DR EMBL; FN667742; CBJ91352.1; -; Genomic_DNA.
DR RefSeq; WP_010847165.1; NC_014228.1.
DR AlphaFoldDB; Q8GLE6; -.
DR SMR; Q8GLE6; -.
DR STRING; 406817.XNC1_3300; -.
DR EnsemblBacteria; CBJ91352; CBJ91352; XNC1_3300.
DR KEGG; xne:XNC1_3300; -.
DR eggNOG; COG0316; Bacteria.
DR HOGENOM; CLU_069054_5_1_6; -.
DR OMA; GYQYGMA; -.
DR Proteomes; UP000008075; Chromosome.
DR GO; GO:0051537; F:2 iron, 2 sulfur cluster binding; IEA:UniProt.
DR GO; GO:0005506; F:iron ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0016226; P:iron-sulfur cluster assembly; IEA:UniProtKB-UniRule.
DR Gene3D; 2.60.300.12; -; 1.
DR HAMAP; MF_01429; Fe_S_insert_IscA; 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_0000077006"
FT BINDING 35
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01429"
FT BINDING 99
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01429"
FT BINDING 101
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01429"
SQ SEQUENCE 107 AA; 11556 MW; 7E862CEE4FC8B078 CRC64;
MSISLTESAA QRIVAFLDNR GKGVGLRLGV RTSGCSGMAY VLEFADVVNE EDQVFEDKGV
KVIVDGKSIL YLDGTELDFV KEGLNEGFKF NNPNVSSECG CGESFHV
