ID Q9CHF0_LACLA Unreviewed; 306 AA.
AC Q9CHF0;
DT 01-JUN-2001, integrated into UniProtKB/TrEMBL.
DT 01-JUN-2001, sequence version 1.
DT 27-MAR-2024, entry version 124.
DE RecName: Full=Cysteine synthase {ECO:0000256|ARBA:ARBA00019371, ECO:0000256|RuleBase:RU003985};
DE EC=2.5.1.47 {ECO:0000256|ARBA:ARBA00012681, ECO:0000256|RuleBase:RU003985};
GN Name=cysK {ECO:0000313|EMBL:AAK04880.1};
GN ORFNames=L0089 {ECO:0000313|EMBL:AAK04880.1};
OS Lactococcus lactis subsp. lactis (strain IL1403) (Streptococcus lactis).
OC Bacteria; Bacillota; Bacilli; Lactobacillales; Streptococcaceae;
OC Lactococcus.
OX NCBI_TaxID=272623 {ECO:0000313|EMBL:AAK04880.1, ECO:0000313|Proteomes:UP000002196};
RN [1] {ECO:0000313|EMBL:AAK04880.1, ECO:0000313|Proteomes:UP000002196}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=IL1403 {ECO:0000313|EMBL:AAK04880.1,
RC ECO:0000313|Proteomes:UP000002196};
RX PubMed=11337471; DOI=10.1101/gr.GR-1697R;
RA Bolotin A., Wincker P., Mauger S., Jaillon O., Malarme K., Weissenbach J.,
RA Ehrlich S.D., Sorokin A.;
RT "The complete genome sequence of the lactic acid bacterium Lactococcus
RT lactis ssp. lactis IL1403.";
RL Genome Res. 11:731-753(2001).
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|ARBA:ARBA00000298,
CC 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}.
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DR EMBL; AE005176; AAK04880.1; -; Genomic_DNA.
DR PIR; F86722; F86722.
DR RefSeq; NP_266938.1; NC_002662.1.
DR RefSeq; WP_003132521.1; NC_002662.1.
DR AlphaFoldDB; Q9CHF0; -.
DR PaxDb; 272623-L0089; -.
DR EnsemblBacteria; AAK04880; AAK04880; L0089.
DR KEGG; lla:L0089; -.
DR PATRIC; fig|272623.7.peg.837; -.
DR eggNOG; COG0031; Bacteria.
DR HOGENOM; CLU_021018_1_0_9; -.
DR OrthoDB; 9808024at2; -.
DR UniPathway; UPA00136; UER00200.
DR Proteomes; UP000002196; Chromosome.
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; IPR005859; CysK.
DR InterPro; IPR001216; P-phosphate_BS.
DR InterPro; IPR001926; TrpB-like_PALP.
DR InterPro; IPR036052; TrpB-like_PALP_sf.
DR NCBIfam; TIGR01139; cysK; 1.
DR NCBIfam; TIGR01136; cysKM; 1.
DR PANTHER; PTHR10314; CYSTATHIONINE BETA-SYNTHASE; 1.
DR PANTHER; PTHR10314:SF194; CYSTATHIONINE BETA-SYNTHASE; 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};
KW Pyridoxal phosphate {ECO:0000256|ARBA:ARBA00022898,
KW ECO:0000256|PIRSR:PIRSR605856-50};
KW Reference proteome {ECO:0000313|Proteomes:UP000002196};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|RuleBase:RU003985}.
FT DOMAIN 8..291
FT /note="Tryptophan synthase beta chain-like PALP"
FT /evidence="ECO:0000259|Pfam:PF00291"
FT BINDING 74
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR605856-50"
FT BINDING 178..182
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR605856-50"
FT BINDING 266
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR605856-50"
FT MOD_RES 44
FT /note="N6-(pyridoxal phosphate)lysine"
FT /evidence="ECO:0000256|PIRSR:PIRSR605856-51"
SQ SEQUENCE 306 AA; 32567 MW; A4339447302D45D5 CRC64;
MVKIVENITE LVGNSPIIKL KNGPENGAEI YLKLEYFNPG GSVKDRIALQ MIRQAEADGR
LKKGGTIVEP TSGNTGIGLA MAGAALGYNV VIIMPDSYSK ERRQIIQAYG AELILTPAAD
GIKAAIDLGQ KLVEENGWFM PMQFENPANL KAHELTTGPE IIEAFGENGL DAFVACAGTG
GTISGVSHYL KSQNSKIKTF VVEPAESPIL TGGESGPHRI QGIGIPFMSP NLDTKAYDGV
IDVTSDEALE TARKIGKSEG FLVGISSGAA IWAAYELAKK LGKGQKVLAL CADNGERYLS
TELYDY
//
