ID A1K861_AZOSB Unreviewed; 326 AA.
AC A1K861;
DT 06-FEB-2007, integrated into UniProtKB/TrEMBL.
DT 06-FEB-2007, sequence version 1.
DT 27-MAR-2024, entry version 100.
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 Name=cysK {ECO:0000313|EMBL:CAL95016.1};
GN OrderedLocusNames=azo2399 {ECO:0000313|EMBL:CAL95016.1};
OS Azoarcus sp. (strain BH72).
OC Bacteria; Pseudomonadota; Betaproteobacteria; Rhodocyclales; Zoogloeaceae;
OC Azoarcus.
OX NCBI_TaxID=418699 {ECO:0000313|EMBL:CAL95016.1, ECO:0000313|Proteomes:UP000002588};
RN [1] {ECO:0000313|EMBL:CAL95016.1, ECO:0000313|Proteomes:UP000002588}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=BH72 {ECO:0000313|EMBL:CAL95016.1,
RC ECO:0000313|Proteomes:UP000002588};
RX PubMed=17057704; DOI=10.1038/nbt1243;
RA Krause A., Ramakumar A., Bartels D., Battistoni F., Bekel T., Boch J.,
RA Boehm M., Friedrich F., Hurek T., Krause L., Linke B., McHardy A.C.,
RA Sarkar A., Schneiker S., Syed A.A., Thauer R., Vorhoelter F.-J.,
RA Weidner S., Puehler A., Reinhold-Hurek B., Kaiser O., Goesmann A.;
RT "Complete genome of the mutualistic, N2-fixing grass endophyte Azoarcus sp.
RT strain BH72.";
RL Nat. Biotechnol. 24:1385-1391(2006).
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.
CC {ECO:0000256|ARBA:ARBA00004895}.
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; AM406670; CAL95016.1; -; Genomic_DNA.
DR RefSeq; WP_011766130.1; NC_008702.1.
DR AlphaFoldDB; A1K861; -.
DR STRING; 62928.azo2399; -.
DR KEGG; azo:azo2399; -.
DR eggNOG; COG0031; Bacteria.
DR HOGENOM; CLU_021018_1_2_4; -.
DR UniPathway; UPA00136; UER00200.
DR Proteomes; UP000002588; 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:UP000002588};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|RuleBase:RU003985}.
FT DOMAIN 11..303
FT /note="Tryptophan synthase beta chain-like PALP"
FT /evidence="ECO:0000259|Pfam:PF00291"
FT BINDING 75
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR605856-50"
FT BINDING 180..184
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR605856-50"
FT BINDING 275
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR605856-50"
FT MOD_RES 45
FT /note="N6-(pyridoxal phosphate)lysine"
FT /evidence="ECO:0000256|PIRSR:PIRSR605856-51"
SQ SEQUENCE 326 AA; 34362 MW; 341A632F05C39C77 CRC64;
MTHWYEDNAR SIGHTPLVRL NRVTDGAPAT ILAKIEGRNP GYSVKCRLGA ALIWDAEKRG
LLGPGKELVE PTSGNTGIAL AFVAAARGIP ITLTMPETMS IERRKLLLAY GAKLVLTEGP
KGMSGAVAKA EEIAASDPSR YVLLQQFKNP ANPAIHEETT GPEIWNDTEG AVDIFVSGVG
TGGTITGVSR YLKKTRGKDV LSVAVEPAAS PILTQKRSGQ ELKPAPHKIQ GIGAGFVPEV
LDLSLVDQVE TVGNEEAVDY ARRLAREEGI LSGISSGAAV AAAVRLARDP QHAGKTIVVV
LPDSGERYLS SVLFEGVFDA TGLPTA
//
