ID SYM_CLOTE Reviewed; 641 AA.
AC Q899D9;
DT 31-OCT-2003, integrated into UniProtKB/Swiss-Prot.
DT 01-JUN-2003, sequence version 1.
DT 27-MAR-2024, entry version 128.
DE RecName: Full=Methionine--tRNA ligase {ECO:0000255|HAMAP-Rule:MF_01228};
DE EC=6.1.1.10 {ECO:0000255|HAMAP-Rule:MF_01228};
DE AltName: Full=Methionyl-tRNA synthetase {ECO:0000255|HAMAP-Rule:MF_01228};
DE Short=MetRS {ECO:0000255|HAMAP-Rule:MF_01228};
GN Name=metG {ECO:0000255|HAMAP-Rule:MF_01228}; OrderedLocusNames=CTC_00243;
OS Clostridium tetani (strain Massachusetts / E88).
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Clostridiaceae;
OC Clostridium.
OX NCBI_TaxID=212717;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Massachusetts / E88;
RX PubMed=12552129; DOI=10.1073/pnas.0335853100;
RA Brueggemann H., Baeumer S., Fricke W.F., Wiezer A., Liesegang H.,
RA Decker I., Herzberg C., Martinez-Arias R., Merkl R., Henne A.,
RA Gottschalk G.;
RT "The genome sequence of Clostridium tetani, the causative agent of tetanus
RT disease.";
RL Proc. Natl. Acad. Sci. U.S.A. 100:1316-1321(2003).
CC -!- FUNCTION: Is required not only for elongation of protein synthesis but
CC also for the initiation of all mRNA translation through initiator
CC tRNA(fMet) aminoacylation. {ECO:0000255|HAMAP-Rule:MF_01228}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + L-methionine + tRNA(Met) = AMP + diphosphate + L-
CC methionyl-tRNA(Met); Xref=Rhea:RHEA:13481, Rhea:RHEA-COMP:9667,
CC Rhea:RHEA-COMP:9698, ChEBI:CHEBI:30616, ChEBI:CHEBI:33019,
CC ChEBI:CHEBI:57844, ChEBI:CHEBI:78442, ChEBI:CHEBI:78530,
CC ChEBI:CHEBI:456215; EC=6.1.1.10; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01228};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01228};
CC Note=Binds 1 zinc ion per subunit. {ECO:0000255|HAMAP-Rule:MF_01228};
CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01228}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01228}.
CC -!- SIMILARITY: Belongs to the class-I aminoacyl-tRNA synthetase family.
CC MetG type 2A subfamily. {ECO:0000255|HAMAP-Rule:MF_01228}.
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DR EMBL; AE015927; AAO34890.1; -; Genomic_DNA.
DR RefSeq; WP_011098557.1; NC_004557.1.
DR AlphaFoldDB; Q899D9; -.
DR SMR; Q899D9; -.
DR STRING; 212717.CTC_00243; -.
DR GeneID; 24252646; -.
DR KEGG; ctc:CTC_00243; -.
DR HOGENOM; CLU_009710_9_4_9; -.
DR OrthoDB; 9810191at2; -.
DR Proteomes; UP000001412; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0004825; F:methionine-tRNA ligase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-KW.
DR GO; GO:0006431; P:methionyl-tRNA aminoacylation; IEA:UniProtKB-UniRule.
DR CDD; cd07957; Anticodon_Ia_Met; 1.
DR CDD; cd00814; MetRS_core; 1.
DR CDD; cd02800; tRNA_bind_EcMetRS_like; 1.
DR Gene3D; 2.170.220.10; -; 1.
DR Gene3D; 3.40.50.620; HUPs; 1.
DR Gene3D; 2.40.50.140; Nucleic acid-binding proteins; 1.
DR HAMAP; MF_01228; Met_tRNA_synth_type2; 1.
DR InterPro; IPR001412; aa-tRNA-synth_I_CS.
DR InterPro; IPR041872; Anticodon_Met.
DR InterPro; IPR004495; Met-tRNA-synth_bsu_C.
DR InterPro; IPR014758; Met-tRNA_synth.
DR InterPro; IPR023457; Met-tRNA_synth_2.
DR InterPro; IPR015413; Methionyl/Leucyl_tRNA_Synth.
DR InterPro; IPR033911; MetRS_core.
DR InterPro; IPR012340; NA-bd_OB-fold.
DR InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR InterPro; IPR002547; tRNA-bd_dom.
DR InterPro; IPR009080; tRNAsynth_Ia_anticodon-bd.
DR NCBIfam; TIGR00398; metG; 1.
DR NCBIfam; TIGR00399; metG_C_term; 1.
DR PANTHER; PTHR43326:SF1; METHIONINE--TRNA LIGASE, MITOCHONDRIAL; 1.
DR PANTHER; PTHR43326; METHIONYL-TRNA SYNTHETASE; 1.
DR Pfam; PF19303; Anticodon_3; 1.
DR Pfam; PF09334; tRNA-synt_1g; 1.
DR Pfam; PF01588; tRNA_bind; 1.
DR PRINTS; PR01041; TRNASYNTHMET.
DR SUPFAM; SSF47323; Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases; 1.
DR SUPFAM; SSF50249; Nucleic acid-binding proteins; 1.
DR SUPFAM; SSF52374; Nucleotidylyl transferase; 1.
DR PROSITE; PS00178; AA_TRNA_LIGASE_I; 1.
DR PROSITE; PS50886; TRBD; 1.
PE 3: Inferred from homology;
KW Aminoacyl-tRNA synthetase; ATP-binding; Cytoplasm; Ligase; Metal-binding;
KW Nucleotide-binding; Protein biosynthesis; Reference proteome; RNA-binding;
KW tRNA-binding; Zinc.
FT CHAIN 1..641
FT /note="Methionine--tRNA ligase"
FT /id="PRO_0000139217"
FT DOMAIN 539..641
FT /note="tRNA-binding"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01228"
FT MOTIF 13..23
FT /note="'HIGH' region"
FT MOTIF 298..302
FT /note="'KMSKS' region"
FT BINDING 128
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01228"
FT BINDING 131
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01228"
FT BINDING 145
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01228"
FT BINDING 148
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01228"
FT BINDING 301
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01228"
SQ SEQUENCE 641 AA; 73211 MW; B58300AA16B20AC4 CRC64;
MNKKTFYITT PIYYPSAKLH IGNTYTTVAA DALARFKRLT GHDVLFLTGT DEHGQKIQRV
AEEKGLKPKE YLDNMVDSIK ELWKSMNISY DKFIRTTDDY HIESVQKIFK KLYEQGDIYK
GEYEGWYCTP CESFWTESQL DDHNCPDCGR PVEKTKEEAY FFKMSKYADR LIKYIEENPH
FIQPESRKNE MLNNFLKPGL QDLCISRTSF DWGIPVSFDN KHVIYVWIDA LSNYITALGY
NSDNQELLEK FWPANVHLVG KDILRFHTIY WPIMLMALGI ELPKQVFGHG WLLVDGGKMS
KSKGNVVDPV VLVDHFGEDT VRYYLLREIP FGSDGLFNNE LFIKKINSDL ANDLGNLLSR
TVAMVQKYFN GIMPAPIAKE PIDDELINLA LDTREKVENN MEKLKIPEVL DEIWTLIGRA
NKYIDETTPW ILAKDEDKKD RLGTVLYNLS ETLRIISVLI SAFIPKTSER INEQLNVDLT
TWDSIASFDG TKAGTKVVKG DALFPRIDVE AKIEELNSLK EKKEKKEIKP IKEEITIDDF
DKIDLRVVKV ISCEPVKGAK KLLKLKVDLG GEERQVISGI AQYYKPEELV GKSVVLVANL
KPAKLRGELS QGMILAAATD DDSKLFTVSI PGELPTGSQV R
//
