ID M1MAN0_9CLOT Unreviewed; 393 AA.
AC M1MAN0;
DT 01-MAY-2013, integrated into UniProtKB/TrEMBL.
DT 01-MAY-2013, sequence version 1.
DT 27-MAR-2024, entry version 59.
DE RecName: Full=Cysteine desulfurase IscS {ECO:0000256|HAMAP-Rule:MF_00331};
DE EC=2.8.1.7 {ECO:0000256|HAMAP-Rule:MF_00331};
GN Name=iscS1 {ECO:0000313|EMBL:AGF55009.1};
GN Synonyms=iscS {ECO:0000256|HAMAP-Rule:MF_00331};
GN ORFNames=Cspa_c12370 {ECO:0000313|EMBL:AGF55009.1};
OS Clostridium saccharoperbutylacetonicum N1-4(HMT).
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Clostridiaceae;
OC Clostridium.
OX NCBI_TaxID=931276 {ECO:0000313|EMBL:AGF55009.1, ECO:0000313|Proteomes:UP000011728};
RN [1] {ECO:0000313|EMBL:AGF55009.1, ECO:0000313|Proteomes:UP000011728}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=N1-4(HMT) {ECO:0000313|Proteomes:UP000011728};
RA Poehlein A., Daniel R.;
RT "Genome sequence of Clostridium saccharoperbutylacetonicum N1-4(HMT).";
RL Submitted (FEB-2013) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Master enzyme that delivers sulfur to a number of partners
CC involved in Fe-S cluster assembly, tRNA modification or cofactor
CC biosynthesis. Catalyzes the removal of elemental sulfur atoms from
CC cysteine to produce alanine. Functions as a sulfur delivery protein for
CC Fe-S cluster synthesis onto IscU, an Fe-S scaffold assembly protein, as
CC well as other S acceptor proteins. {ECO:0000256|HAMAP-Rule:MF_00331}.
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:0000256|HAMAP-
CC Rule:MF_00331};
CC -!- COFACTOR:
CC Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC Evidence={ECO:0000256|ARBA:ARBA00001933,
CC ECO:0000256|HAMAP-Rule:MF_00331, ECO:0000256|RuleBase:RU004504};
CC -!- PATHWAY: Cofactor biosynthesis; iron-sulfur cluster biosynthesis.
CC {ECO:0000256|HAMAP-Rule:MF_00331}.
CC -!- SUBUNIT: Homodimer. Forms a heterotetramer with IscU, interacts with
CC other sulfur acceptors. {ECO:0000256|HAMAP-Rule:MF_00331}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00331}.
CC -!- SIMILARITY: Belongs to the class-V pyridoxal-phosphate-dependent
CC aminotransferase family. NifS/IscS subfamily.
CC {ECO:0000256|ARBA:ARBA00006490, ECO:0000256|HAMAP-Rule:MF_00331}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_00331}.
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DR EMBL; CP004121; AGF55009.1; -; Genomic_DNA.
DR RefSeq; WP_015391334.1; NZ_AOIF01000132.1.
DR AlphaFoldDB; M1MAN0; -.
DR STRING; 36745.CLSAP_12050; -.
DR KEGG; csr:Cspa_c12370; -.
DR PATRIC; fig|931276.5.peg.1196; -.
DR eggNOG; COG1104; Bacteria.
DR HOGENOM; CLU_003433_0_0_9; -.
DR OrthoDB; 9808002at2; -.
DR UniPathway; UPA00266; -.
DR Proteomes; UP000011728; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0051537; F:2 iron, 2 sulfur cluster binding; IEA:UniProtKB-UniRule.
DR GO; GO:0031071; F:cysteine desulfurase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0030170; F:pyridoxal phosphate binding; IEA:UniProtKB-UniRule.
DR GO; GO:0044571; P:[2Fe-2S] cluster assembly; IEA:UniProtKB-UniRule.
DR GO; GO:0006520; P:amino acid metabolic process; IEA:InterPro.
DR Gene3D; 1.10.260.50; -; 1.
DR Gene3D; 3.90.1150.10; Aspartate Aminotransferase, domain 1; 1.
DR Gene3D; 3.40.640.10; Type I PLP-dependent aspartate aminotransferase-like (Major domain); 1.
DR HAMAP; MF_00331; Cys_desulf_IscS; 1.
DR InterPro; IPR000192; Aminotrans_V_dom.
DR InterPro; IPR020578; Aminotrans_V_PyrdxlP_BS.
DR InterPro; IPR010240; Cys_deSase_IscS.
DR InterPro; IPR017772; Cys_deSase_NifS_bac/arc.
DR InterPro; IPR016454; Cysteine_dSase.
DR InterPro; IPR015424; PyrdxlP-dep_Trfase.
DR InterPro; IPR015421; PyrdxlP-dep_Trfase_major.
DR InterPro; IPR015422; PyrdxlP-dep_Trfase_small.
DR NCBIfam; TIGR03402; FeS_nifS; 1.
DR PANTHER; PTHR11601:SF34; CYSTEINE DESULFURASE, MITOCHONDRIAL; 1.
DR PANTHER; PTHR11601; CYSTEINE DESULFURYLASE FAMILY MEMBER; 1.
DR Pfam; PF00266; Aminotran_5; 1.
DR PIRSF; PIRSF005572; NifS; 1.
DR SUPFAM; SSF53383; PLP-dependent transferases; 1.
DR PROSITE; PS00595; AA_TRANSFER_CLASS_5; 1.
PE 3: Inferred from homology;
KW 2Fe-2S {ECO:0000256|HAMAP-Rule:MF_00331};
KW Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00331};
KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|HAMAP-Rule:MF_00331};
KW Iron-sulfur {ECO:0000256|ARBA:ARBA00023014, ECO:0000256|HAMAP-
KW Rule:MF_00331};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_00331};
KW Pyridoxal phosphate {ECO:0000256|ARBA:ARBA00022898, ECO:0000256|HAMAP-
KW Rule:MF_00331}; Reference proteome {ECO:0000313|Proteomes:UP000011728};
KW Transferase {ECO:0000256|HAMAP-Rule:MF_00331, ECO:0000313|EMBL:AGF55009.1}.
FT DOMAIN 4..366
FT /note="Aminotransferase class V"
FT /evidence="ECO:0000259|Pfam:PF00266"
FT ACT_SITE 325
FT /note="Cysteine persulfide intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00331"
FT BINDING 71..72
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00331"
FT BINDING 151
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00331"
FT BINDING 179
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00331"
FT BINDING 237
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00331"
FT BINDING 325
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /ligand_note="ligand shared with IscU"
FT /note="via persulfide group"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00331"
FT MOD_RES 202
FT /note="N6-(pyridoxal phosphate)lysine"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00331"
SQ SEQUENCE 393 AA; 43432 MW; 191F4506D538D78F CRC64;
MKNVYMDYSA TTYVKPEVLE EMLPYFTQKF GNPSSFYGIS RETKKAIDKA REQIAKALNC
LPEEVYFTGG GSEADNWAIK GIASAHRNKG NHIITTKIEH HAVLHTCEYL EKNGFEVTYL
DVDEEGFVRL EDLKNAITDK TILVSIMFAN NEIGTIEPIK EIGEICREKK IFFHTDAVQA
IGNVPVDVKE MNIDMLSLAG HKLYGPKGIG VLYIKKGIKI DNLIHGGAQE RNRRAGTENI
ASIVGLGKAV ELATVNLEEH MSKLTALRDK LINGLLEIPY TKLNGPRGDK RLPGNANVCF
RFIEGESILL SLDFKGVCAS SGSACTSGSL DPSHVLLAIG LPHEIAHGSL RLSMGEGSTE
EDVDYVLEVV PPIIERLRNM SPLWDDFLKK GEK
//
