ID   A0A0D6DUM7_9LACT        Unreviewed;       308 AA.
AC   A0A0D6DUM7;
DT   27-MAY-2015, integrated into UniProtKB/TrEMBL.
DT   27-MAY-2015, sequence version 1.
DT   24-JAN-2024, entry version 38.
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   ORFNames=LACPI_0469 {ECO:0000313|EMBL:CEN27669.1};
OS   Lactococcus piscium MKFS47.
OC   Bacteria; Bacillota; Bacilli; Lactobacillales; Streptococcaceae;
OC   Lactococcus.
OX   NCBI_TaxID=297352 {ECO:0000313|EMBL:CEN27669.1, ECO:0000313|Proteomes:UP000033166};
RN   [1] {ECO:0000313|Proteomes:UP000033166}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MKFS47 {ECO:0000313|Proteomes:UP000033166};
RA   Andreevskaya M.;
RL   Submitted (JAN-2015) to the EMBL/GenBank/DDBJ databases.
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; LN774769; CEN27669.1; -; Genomic_DNA.
DR   RefSeq; WP_047914923.1; NZ_LN774769.1.
DR   AlphaFoldDB; A0A0D6DUM7; -.
DR   STRING; 1364.LP2241_20121; -.
DR   KEGG; lpk:LACPI_0469; -.
DR   HOGENOM; CLU_021018_1_0_9; -.
DR   UniPathway; UPA00136; UER00200.
DR   Proteomes; UP000033166; Chromosome I.
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   Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|RuleBase:RU003985}.
FT   DOMAIN          8..293
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   308 AA;  32069 MW;  84058A4E33400674 CRC64;
     MSKIYDNITE LIGATPIVKL RHVDSDSAEV YVKLEAFNPG GSVKDRIALN MIRAAEADGS
     LKPGGTIVEP TSGNTGIGLA FVGAALGYKV IIVLPETFSI ERRRLIQAYG AELVLTPAAG
     GMGAAIAKAK ELAEDNGYFL PLQFENPANP RIHEETTGPE IIAAFGETGL DAFVAGAGTG
     GTVSGVSPVL KKANPKIGIY VVEADESAVF SGEKPGPHKI QGISPGFIPG TLNTKAYDEI
     IRVSSDDAIA AGRAVGYEEG FLLGISGGAA IFAAKQVAKK LGKGKKVLTI APDNGERYLS
     TFLYDFGE
//