ID   SYC_CHLTR               Reviewed;         477 AA.
AC   O84787;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-DEC-2000, sequence version 2.
DT   03-AUG-2022, entry version 130.
DE   RecName: Full=Cysteine--tRNA ligase;
DE            EC=6.1.1.16;
DE   AltName: Full=Cysteinyl-tRNA synthetase;
DE            Short=CysRS;
GN   Name=cysS; OrderedLocusNames=CT_782;
OS   Chlamydia trachomatis (strain D/UW-3/Cx).
OC   Bacteria; Chlamydiae; Chlamydiales; Chlamydiaceae;
OC   Chlamydia/Chlamydophila group; Chlamydia.
OX   NCBI_TaxID=272561;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=D/UW-3/Cx;
RX   PubMed=9784136; DOI=10.1126/science.282.5389.754;
RA   Stephens R.S., Kalman S., Lammel C.J., Fan J., Marathe R., Aravind L.,
RA   Mitchell W.P., Olinger L., Tatusov R.L., Zhao Q., Koonin E.V., Davis R.W.;
RT   "Genome sequence of an obligate intracellular pathogen of humans: Chlamydia
RT   trachomatis.";
RL   Science 282:754-759(1998).
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + L-cysteine + tRNA(Cys) = AMP + diphosphate + L-
CC         cysteinyl-tRNA(Cys); Xref=Rhea:RHEA:17773, Rhea:RHEA-COMP:9661,
CC         Rhea:RHEA-COMP:9679, ChEBI:CHEBI:30616, ChEBI:CHEBI:33019,
CC         ChEBI:CHEBI:35235, ChEBI:CHEBI:78442, ChEBI:CHEBI:78517,
CC         ChEBI:CHEBI:456215; EC=6.1.1.16;
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105; Evidence={ECO:0000250};
CC       Note=Binds 1 zinc ion per subunit. {ECO:0000250};
CC   -!- SUBUNIT: Monomer. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the class-I aminoacyl-tRNA synthetase family.
CC       {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAC68377.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; AE001273; AAC68377.1; ALT_INIT; Genomic_DNA.
DR   PIR; F71472; F71472.
DR   RefSeq; NP_220301.1; NC_000117.1.
DR   AlphaFoldDB; O84787; -.
DR   SMR; O84787; -.
DR   STRING; 813.O172_04360; -.
DR   EnsemblBacteria; AAC68377; AAC68377; CT_782.
DR   GeneID; 884587; -.
DR   KEGG; ctr:CT_782; -.
DR   PATRIC; fig|272561.5.peg.859; -.
DR   HOGENOM; CLU_013528_0_1_0; -.
DR   InParanoid; O84787; -.
DR   OMA; AKYWMHN; -.
DR   Proteomes; UP000000431; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IBA:GO_Central.
DR   GO; GO:0005829; C:cytosol; IBA:GO_Central.
DR   GO; GO:0005524; F:ATP binding; IBA:GO_Central.
DR   GO; GO:0004817; F:cysteine-tRNA ligase activity; IBA:GO_Central.
DR   GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0006423; P:cysteinyl-tRNA aminoacylation; IBA:GO_Central.
DR   CDD; cd00672; CysRS_core; 1.
DR   Gene3D; 3.40.50.620; -; 1.
DR   HAMAP; MF_00041; Cys_tRNA_synth; 1.
DR   InterPro; IPR015803; Cys-tRNA-ligase.
DR   InterPro; IPR015273; Cys-tRNA-synt_Ia_DALR.
DR   InterPro; IPR024909; Cys-tRNA/MSH_ligase.
DR   InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR   InterPro; IPR032678; tRNA-synt_1_cat_dom.
DR   InterPro; IPR009080; tRNAsynth_Ia_anticodon-bd.
DR   PANTHER; PTHR10890; PTHR10890; 1.
DR   Pfam; PF09190; DALR_2; 1.
DR   Pfam; PF01406; tRNA-synt_1e; 1.
DR   PRINTS; PR00983; TRNASYNTHCYS.
DR   SMART; SM00840; DALR_2; 1.
DR   SUPFAM; SSF47323; SSF47323; 1.
DR   TIGRFAMs; TIGR00435; cysS; 1.
PE   3: Inferred from homology;
KW   Aminoacyl-tRNA synthetase; ATP-binding; Cytoplasm; Ligase; Metal-binding;
KW   Nucleotide-binding; Protein biosynthesis; Reference proteome; Zinc.
FT   CHAIN           1..477
FT                   /note="Cysteine--tRNA ligase"
FT                   /id="PRO_0000159379"
FT   MOTIF           30..40
FT                   /note="'HIGH' region"
FT   MOTIF           270..274
FT                   /note="'KMSKS' region"
FT   BINDING         28
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000250"
FT   BINDING         213
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000250"
FT   BINDING         238
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000250"
FT   BINDING         242
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000250"
FT   BINDING         273
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   477 AA;  54875 MW;  E6949DBF678A160F CRC64;
     MDLFLYNTLS REKERFLPVN DPVKLYTCGP TVYDYAHIGN FRTYIFEDLL KRVLLFLGYS
     VYHVMNITDV DDKTLAGARK KGCSLEKYCQ PYIHAFFADL ETLHILKADA YPHATHYIPQ
     MIEAIQQLIN QGVAYIGQDQ SVYFSISQFP NYGALSHLNL EELRNSARID ADEYDKDNLC
     DFVLWKAYDP DRDGEIFWES PFGKGRPGWH LECSIMSISL LGQSLDIHAG GVDNIFPHHE
     NEIAQSESLS HKPFVRYWLH SHHLLVDRKK MSKSLGNFFT LRDLLDQGFS GEEVRYLLLQ
     GHYRTQLNFT QEGLHASRQS LKRLRDFICR LEDPSYPDDI IHPEVATACQ SFLETFITSL
     TNDLNISSSL AALFDFIRKI NSSIDQHTGI QTETDSSVFS KQDAQHILAL LRKIDQVLGV
     LPFSQPDIPE EVLLLVEQRE AARKVKNWQE ADRLRDEILS RSFAIEDGKT GMKVKKL