ID I2GQC9_9BACT Unreviewed; 326 AA.
AC I2GQC9;
DT 11-JUL-2012, integrated into UniProtKB/TrEMBL.
DT 11-JUL-2012, sequence version 1.
DT 27-MAR-2024, entry version 50.
DE RecName: Full=Cysteine synthase {ECO:0000256|ARBA:ARBA00012681, ECO:0000256|RuleBase:RU003985};
DE EC=2.5.1.47 {ECO:0000256|ARBA:ARBA00012681, ECO:0000256|RuleBase:RU003985};
GN ORFNames=BN8_05419 {ECO:0000313|EMBL:CCH56107.1};
OS Fibrisoma limi BUZ 3.
OC Bacteria; Bacteroidota; Cytophagia; Cytophagales; Spirosomataceae;
OC Fibrisoma.
OX NCBI_TaxID=1185876 {ECO:0000313|EMBL:CCH56107.1, ECO:0000313|Proteomes:UP000009309};
RN [1] {ECO:0000313|EMBL:CCH56107.1, ECO:0000313|Proteomes:UP000009309}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=BUZ 3T {ECO:0000313|Proteomes:UP000009309};
RX PubMed=22843583; DOI=10.1128/jb.00869-12;
RA Filippini M., Qi W., Jaenicke S., Goesmann A., Smits T.H., Bagheri H.C.;
RT "Genome Sequence of the Filamentous Bacterium Fibrisoma limi BUZ 3T.";
RL J. Bacteriol. 194:4445-4445(2012).
CC -!- CATALYTIC ACTIVITY:
CC Reaction=hydrogen sulfide + O-acetyl-L-serine = acetate + L-cysteine;
CC Xref=Rhea:RHEA:14829, ChEBI:CHEBI:29919, ChEBI:CHEBI:30089,
CC ChEBI:CHEBI:35235, ChEBI:CHEBI:58340; EC=2.5.1.47;
CC Evidence={ECO:0000256|RuleBase:RU003985};
CC -!- COFACTOR:
CC Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC Evidence={ECO:0000256|ARBA:ARBA00001933,
CC ECO:0000256|PIRSR:PIRSR605856-50, ECO:0000256|RuleBase:RU003985};
CC -!- PATHWAY: Amino-acid biosynthesis; L-cysteine biosynthesis; L-cysteine
CC from L-serine: step 2/2. {ECO:0000256|ARBA:ARBA00004962}.
CC -!- SIMILARITY: Belongs to the cysteine synthase/cystathionine beta-
CC synthase family. {ECO:0000256|ARBA:ARBA00007103,
CC ECO:0000256|RuleBase:RU003985}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:CCH56107.1}.
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DR EMBL; CAIT01000009; CCH56107.1; -; Genomic_DNA.
DR AlphaFoldDB; I2GQC9; -.
DR STRING; 1185876.BN8_05419; -.
DR eggNOG; COG0031; Bacteria.
DR UniPathway; UPA00136; UER00200.
DR Proteomes; UP000009309; Unassembled WGS sequence.
DR GO; GO:0016020; C:membrane; IEA:UniProtKB-KW.
DR GO; GO:0004124; F:cysteine synthase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006535; P:cysteine biosynthetic process from serine; IEA:UniProtKB-UniRule.
DR CDD; cd01561; CBS_like; 1.
DR Gene3D; 3.40.50.1100; -; 2.
DR InterPro; IPR005856; Cys_synth.
DR InterPro; IPR005858; CysM.
DR InterPro; IPR001216; P-phosphate_BS.
DR InterPro; IPR001926; TrpB-like_PALP.
DR InterPro; IPR036052; TrpB-like_PALP_sf.
DR NCBIfam; TIGR01136; cysKM; 1.
DR NCBIfam; TIGR01138; cysM; 1.
DR PANTHER; PTHR10314; CYSTATHIONINE BETA-SYNTHASE; 1.
DR PANTHER; PTHR10314:SF162; CYSTEINE SYNTHASE B; 1.
DR Pfam; PF00291; PALP; 1.
DR SUPFAM; SSF53686; Tryptophan synthase beta subunit-like PLP-dependent enzymes; 1.
DR PROSITE; PS00901; CYS_SYNTHASE; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|RuleBase:RU003985};
KW Cysteine biosynthesis {ECO:0000256|ARBA:ARBA00023192,
KW ECO:0000256|RuleBase:RU003985}; Membrane {ECO:0000256|SAM:Phobius};
KW Pyridoxal phosphate {ECO:0000256|ARBA:ARBA00022898,
KW ECO:0000256|PIRSR:PIRSR605856-50};
KW Reference proteome {ECO:0000313|Proteomes:UP000009309};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|RuleBase:RU003985};
KW Transmembrane {ECO:0000256|SAM:Phobius};
KW Transmembrane helix {ECO:0000256|SAM:Phobius}.
FT TRANSMEM 21..41
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT DOMAIN 42..314
FT /note="Tryptophan synthase beta chain-like PALP"
FT /evidence="ECO:0000259|Pfam:PF00291"
FT BINDING 107
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR605856-50"
FT BINDING 207..211
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR605856-50"
FT BINDING 288
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR605856-50"
FT MOD_RES 77
FT /note="N6-(pyridoxal phosphate)lysine"
FT /evidence="ECO:0000256|PIRSR:PIRSR605856-51"
SQ SEQUENCE 326 AA; 35732 MW; 16259CB34A57EC13 CRC64;
MPATVRKSMK KSFAEGRTNT CYLTLWEVII YLTFSTMATL LDLVGNTPLI ELNRIHRNPR
VKIYGKLEGH NPGGSVKDRA AASMIQGALS RGELKPGMKL IEATSGNTGI ALAMIARLYD
IDIELVMPEN STRERVLTME AFGAKVILTE SIESARDYAD AQVAKGGYLM LNQFANPDNY
LAHYRTTGPE IWNDTQGQIT HFVSSMGTTG TIMGTSRYLK EQNPDVQIVG CQPTDGSSIP
GIRKWPVEYL PKIFEPERVD RVIEVSETDA VMTTRQLASV EGVFAGMSSG GAVYASIKLA
EELESGIIVC IICDRGDRYL SSSLFG
//
