ID   SYY_BACCA               Reviewed;         419 AA.
AC   P04077;
DT   01-NOV-1986, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1986, sequence version 1.
DT   02-SEP-2026, entry version 121.
DE   RecName: Full=Tyrosine--tRNA ligase {ECO:0000255|HAMAP-Rule:MF_02006};
DE            EC=6.1.1.1 {ECO:0000255|HAMAP-Rule:MF_02006};
DE   AltName: Full=Tyrosyl-tRNA synthetase {ECO:0000255|HAMAP-Rule:MF_02006};
DE            Short=TyrRS {ECO:0000255|HAMAP-Rule:MF_02006};
GN   Name=tyrS {ECO:0000255|HAMAP-Rule:MF_02006};
OS   Bacillus caldotenax.
OC   Bacteria; Bacillati; Bacillota; Bacilli; Caryophanales; Anoxybacillaceae;
OC   Geobacillus; Geobacillus thermoleovorans group.
OX   NCBI_TaxID=1395;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=3011073; DOI=10.1021/bi00356a008;
RA   Jones M.D., Lowe D.M., Borgford T., Fersht A.R.;
RT   "Natural variation of tyrosyl-tRNA synthetase and comparison with
RT   engineered mutants.";
RL   Biochemistry 25:1887-1891(1986).
CC   -!- FUNCTION: Catalyzes the attachment of tyrosine to tRNA(Tyr) in a two-
CC       step reaction: tyrosine is first activated by ATP to form Tyr-AMP and
CC       then transferred to the acceptor end of tRNA(Tyr). {ECO:0000255|HAMAP-
CC       Rule:MF_02006}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=tRNA(Tyr) + L-tyrosine + ATP = L-tyrosyl-tRNA(Tyr) + AMP +
CC         diphosphate + H(+); Xref=Rhea:RHEA:10220, Rhea:RHEA-COMP:9706,
CC         Rhea:RHEA-COMP:9707, ChEBI:CHEBI:15378, ChEBI:CHEBI:30616,
CC         ChEBI:CHEBI:33019, ChEBI:CHEBI:58315, ChEBI:CHEBI:78442,
CC         ChEBI:CHEBI:78536, ChEBI:CHEBI:456215; EC=6.1.1.1;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_02006};
CC   -!- SUBUNIT: Homodimer.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm.
CC   -!- SIMILARITY: Belongs to the class-I aminoacyl-tRNA synthetase family.
CC       TyrS type 1 subfamily. {ECO:0000255|HAMAP-Rule:MF_02006}.
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DR   EMBL; M13148; AAA22877.1; -; Genomic_DNA.
DR   PIR; A01180; SYBSYX.
DR   AlphaFoldDB; P04077; -.
DR   BMRB; P04077; -.
DR   SMR; P04077; -.
DR   GO; GO:0005829; C:cytosol; IEA:TreeGrafter.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0042803; F:protein homodimerization activity; IEA:UniProtKB-ARBA.
DR   GO; GO:0003723; F:RNA binding; IEA:InterPro.
DR   GO; GO:0004831; F:tyrosine-tRNA ligase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006437; P:tyrosyl-tRNA aminoacylation; IEA:UniProtKB-UniRule.
DR   CDD; cd00165; S4; 1.
DR   CDD; cd00395; Tyr_Trp_RS_core; 1.
DR   FunFam; 1.10.240.10:FF:000001; Tyrosine--tRNA ligase; 1.
DR   FunFam; 3.10.290.10:FF:000012; Tyrosine--tRNA ligase; 1.
DR   FunFam; 3.40.50.620:FF:000008; Tyrosine--tRNA ligase; 1.
DR   Gene3D; 3.40.50.620; HUPs; 1.
DR   Gene3D; 3.10.290.10; RNA-binding S4 domain; 1.
DR   Gene3D; 1.10.240.10; Tyrosyl-Transfer RNA Synthetase; 1.
DR   HAMAP; MF_02006; Tyr_tRNA_synth_type1; 1.
DR   InterPro; IPR001412; aa-tRNA-synth_I_CS.
DR   InterPro; IPR002305; aa-tRNA-synth_Ic.
DR   InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR   InterPro; IPR002942; S4_RNA-bd.
DR   InterPro; IPR036986; S4_RNA-bd_sf.
DR   InterPro; IPR054608; SYY-like_C.
DR   InterPro; IPR002307; Tyr-tRNA-ligase.
DR   InterPro; IPR024088; Tyr-tRNA-ligase_bac-type.
DR   InterPro; IPR024107; Tyr-tRNA-ligase_bac_1.
DR   NCBIfam; TIGR00234; tyrS; 1.
DR   PANTHER; PTHR11766:SF0; TYROSINE--TRNA LIGASE, MITOCHONDRIAL; 1.
DR   PANTHER; PTHR11766; TYROSYL-TRNA SYNTHETASE; 1.
DR   Pfam; PF22421; SYY_C-terminal; 1.
DR   Pfam; PF00579; tRNA-synt_1b; 1.
DR   PRINTS; PR01040; TRNASYNTHTYR.
DR   SMART; SM00363; S4; 1.
DR   SUPFAM; SSF55174; Alpha-L RNA-binding motif; 1.
DR   SUPFAM; SSF52374; Nucleotidylyl transferase; 1.
DR   PROSITE; PS00178; AA_TRNA_LIGASE_I; 1.
DR   PROSITE; PS50889; S4; 1.
PE   3: Inferred from homology;
KW   Aminoacyl-tRNA synthetase; ATP-binding; Cytoplasm; Ligase;
KW   Nucleotide-binding; Protein biosynthesis; RNA-binding.
FT   CHAIN           1..419
FT                   /note="Tyrosine--tRNA ligase"
FT                   /id="PRO_0000055641"
FT   DOMAIN          352..419
FT                   /note="S4 RNA-binding"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02006"
FT   MOTIF           39..48
FT                   /note="'HIGH' region"
FT   MOTIF           230..234
FT                   /note="'KMSKS' region"
FT   BINDING         34
FT                   /ligand="L-tyrosine"
FT                   /ligand_id="ChEBI:CHEBI:58315"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02006"
FT   BINDING         169
FT                   /ligand="L-tyrosine"
FT                   /ligand_id="ChEBI:CHEBI:58315"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02006"
FT   BINDING         173
FT                   /ligand="L-tyrosine"
FT                   /ligand_id="ChEBI:CHEBI:58315"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02006"
FT   BINDING         233
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02006"
SQ   SEQUENCE   419 AA;  47202 MW;  13785CC4FBFEB742 CRC64;
     MDLLAELQWR GLVNQTTDED GLRKLLNEER VTLYCGFDPT ADSLHIGNLA AILTLRRFQQ
     AGHRPIALVG GATGLIGDPS GKKSERTLNA KETVEAWSAR IKEQLGRFLD FEADGNPAKI
     KNNYDWIGPL DVITFLRDVG KHFSVNYMMA KESVQSRIET GISFTEFSYM MLQAYDFLRL
     YETEGCRLQI GGSDQWGNIT AGLELIRKTK GEARAFGLTI PLVTKADGTK FGKTESGTIW
     LDKEKTSPYE FYQFWINTDD RDVIRYLKYF TFLSKEEIEA LEQELREAPE KRAAQKALAE
     EVTKLVHGEE ALRQAIRISE ALFSGDIANL TAAEIEQGFK DVPSFVHEGG DVPLVELLVS
     AGISPSKRQA REDIQNGAIY VNGERLQDVG AILTAEHRLE GRFTVIRRGK KKYYLIRYA
//