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SUFS_ECO27
ID   SUFS_ECO27              Reviewed;         406 AA.
AC   B7US19;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   10-FEB-2009, sequence version 1.
DT   25-MAY-2022, entry version 69.
DE   RecName: Full=Cysteine desulfurase {ECO:0000255|HAMAP-Rule:MF_01831};
DE            EC=2.8.1.7 {ECO:0000255|HAMAP-Rule:MF_01831};
DE   AltName: Full=Selenocysteine beta-lyase {ECO:0000255|HAMAP-Rule:MF_01831};
DE            Short=SCL {ECO:0000255|HAMAP-Rule:MF_01831};
DE   AltName: Full=Selenocysteine lyase {ECO:0000255|HAMAP-Rule:MF_01831};
DE            EC=4.4.1.16 {ECO:0000255|HAMAP-Rule:MF_01831};
DE   AltName: Full=Selenocysteine reductase {ECO:0000255|HAMAP-Rule:MF_01831};
GN   Name=sufS {ECO:0000255|HAMAP-Rule:MF_01831}; OrderedLocusNames=E2348C_1765;
OS   Escherichia coli O127:H6 (strain E2348/69 / EPEC).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=574521;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=E2348/69 / EPEC;
RX   PubMed=18952797; DOI=10.1128/jb.01238-08;
RA   Iguchi A., Thomson N.R., Ogura Y., Saunders D., Ooka T., Henderson I.R.,
RA   Harris D., Asadulghani M., Kurokawa K., Dean P., Kenny B., Quail M.A.,
RA   Thurston S., Dougan G., Hayashi T., Parkhill J., Frankel G.;
RT   "Complete genome sequence and comparative genome analysis of
RT   enteropathogenic Escherichia coli O127:H6 strain E2348/69.";
RL   J. Bacteriol. 191:347-354(2009).
CC   -!- FUNCTION: Cysteine desulfurases mobilize the sulfur from L-cysteine to
CC       yield L-alanine, an essential step in sulfur metabolism for
CC       biosynthesis of a variety of sulfur-containing biomolecules. Component
CC       of the suf operon, which is activated and required under specific
CC       conditions such as oxidative stress and iron limitation. Acts as a
CC       potent selenocysteine lyase in vitro, that mobilizes selenium from L-
CC       selenocysteine. Selenocysteine lyase activity is however unsure in
CC       vivo. {ECO:0000255|HAMAP-Rule:MF_01831}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=[sulfur carrier]-H + L-cysteine = [sulfur carrier]-SH + L-
CC         alanine; Xref=Rhea:RHEA:43892, Rhea:RHEA-COMP:14737, Rhea:RHEA-
CC         COMP:14739, ChEBI:CHEBI:29917, ChEBI:CHEBI:35235, ChEBI:CHEBI:57972,
CC         ChEBI:CHEBI:64428; EC=2.8.1.7; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01831};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=AH2 + L-selenocysteine = A + H(+) + hydrogenselenide + L-
CC         alanine; Xref=Rhea:RHEA:11632, ChEBI:CHEBI:13193, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:17499, ChEBI:CHEBI:29317, ChEBI:CHEBI:57843,
CC         ChEBI:CHEBI:57972; EC=4.4.1.16; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01831};
CC   -!- COFACTOR:
CC       Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01831};
CC   -!- PATHWAY: Cofactor biosynthesis; iron-sulfur cluster biosynthesis.
CC       {ECO:0000255|HAMAP-Rule:MF_01831}.
CC   -!- SUBUNIT: Homodimer. Interacts with SufE and the SufBCD complex composed
CC       of SufB, SufC and SufD. The interaction with SufE is required to
CC       mediate the direct transfer of the sulfur atom from the S-
CC       sulfanylcysteine. {ECO:0000255|HAMAP-Rule:MF_01831}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01831}.
CC   -!- SIMILARITY: Belongs to the class-V pyridoxal-phosphate-dependent
CC       aminotransferase family. Csd subfamily. {ECO:0000255|HAMAP-
CC       Rule:MF_01831}.
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DR   EMBL; FM180568; CAS09313.1; -; Genomic_DNA.
DR   RefSeq; WP_000144571.1; NC_011601.1.
DR   AlphaFoldDB; B7US19; -.
DR   SMR; B7US19; -.
DR   EnsemblBacteria; CAS09313; CAS09313; E2348C_1765.
DR   KEGG; ecg:E2348C_1765; -.
DR   HOGENOM; CLU_003433_2_5_6; -.
DR   OMA; HKLCGPT; -.
DR   UniPathway; UPA00266; -.
DR   Proteomes; UP000008205; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0031071; F:cysteine desulfurase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0030170; F:pyridoxal phosphate binding; IEA:InterPro.
DR   GO; GO:0009000; F:selenocysteine lyase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006534; P:cysteine metabolic process; IEA:InterPro.
DR   CDD; cd06453; SufS_like; 1.
DR   Gene3D; 3.40.640.10; -; 1.
DR   Gene3D; 3.90.1150.10; -; 1.
DR   HAMAP; MF_01831; SufS_aminotrans_5; 1.
DR   InterPro; IPR000192; Aminotrans_V_dom.
DR   InterPro; IPR020578; Aminotrans_V_PyrdxlP_BS.
DR   InterPro; IPR010970; Cys_dSase_SufS.
DR   InterPro; IPR015424; PyrdxlP-dep_Trfase.
DR   InterPro; IPR015421; PyrdxlP-dep_Trfase_major.
DR   InterPro; IPR015422; PyrdxlP-dep_Trfase_small.
DR   Pfam; PF00266; Aminotran_5; 1.
DR   SUPFAM; SSF53383; SSF53383; 1.
DR   TIGRFAMs; TIGR01979; sufS; 1.
DR   PROSITE; PS00595; AA_TRANSFER_CLASS_5; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Lyase; Pyridoxal phosphate; Transferase.
FT   CHAIN           1..406
FT                   /note="Cysteine desulfurase"
FT                   /id="PRO_1000188291"
FT   ACT_SITE        364
FT                   /note="Cysteine persulfide intermediate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01831"
FT   MOD_RES         226
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01831"
SQ   SEQUENCE   406 AA;  44318 MW;  F05FC4E34162A8F2 CRC64;
     MTFSVDKVRA DFPVLSREVN GLPLAYLDSA ASAQKPSQVI DAEAEFYRHG YAAVHRGIHT
     LSAQATEKME NVRKRASLFI NARSAEELVF VRGTTEGINL VANSWGNSNV RAGDNIIISQ
     MEHHANIVPW QMLCARVGAE LRVIPLNPDG TLQLETLPTL FDEKTRLLAI THVSNVLGTE
     NPLAEMITLA HQHGAKVLVD GAQAVMHHPV DVQALDCDFY VFSGHKLYGP TGIGILYVKE
     ALLQEMPPWE GGGSMIATVS LSEGTTWTKA PWRFEAGTPN TGGIIGLGAA LEYVSALGLN
     NIAEYEQNLM HYALSQLAAV PDLTLYGPPD RLGVIAFNLG KHHAYDVGSF LDNYGIAVRT
     GHHCAMPLMA YYNVPAMCRA SLAMYNTHEE VDRLVTGLQR IHRLLG
 
 
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