ID   SYL_NOSS1               Reviewed;         872 AA.
AC   Q8YS09;
DT   07-JUN-2004, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2002, sequence version 1.
DT   03-AUG-2022, entry version 111.
DE   RecName: Full=Leucine--tRNA ligase {ECO:0000255|HAMAP-Rule:MF_00049};
DE            EC=6.1.1.4 {ECO:0000255|HAMAP-Rule:MF_00049};
DE   AltName: Full=Leucyl-tRNA synthetase {ECO:0000255|HAMAP-Rule:MF_00049};
DE            Short=LeuRS {ECO:0000255|HAMAP-Rule:MF_00049};
GN   Name=leuS {ECO:0000255|HAMAP-Rule:MF_00049}; OrderedLocusNames=alr3283;
OS   Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576).
OC   Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Nostoc.
OX   NCBI_TaxID=103690;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 7120 / SAG 25.82 / UTEX 2576;
RX   PubMed=11759840; DOI=10.1093/dnares/8.5.205;
RA   Kaneko T., Nakamura Y., Wolk C.P., Kuritz T., Sasamoto S., Watanabe A.,
RA   Iriguchi M., Ishikawa A., Kawashima K., Kimura T., Kishida Y., Kohara M.,
RA   Matsumoto M., Matsuno A., Muraki A., Nakazaki N., Shimpo S., Sugimoto M.,
RA   Takazawa M., Yamada M., Yasuda M., Tabata S.;
RT   "Complete genomic sequence of the filamentous nitrogen-fixing
RT   cyanobacterium Anabaena sp. strain PCC 7120.";
RL   DNA Res. 8:205-213(2001).
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + L-leucine + tRNA(Leu) = AMP + diphosphate + L-leucyl-
CC         tRNA(Leu); Xref=Rhea:RHEA:11688, Rhea:RHEA-COMP:9613, Rhea:RHEA-
CC         COMP:9622, ChEBI:CHEBI:30616, ChEBI:CHEBI:33019, ChEBI:CHEBI:57427,
CC         ChEBI:CHEBI:78442, ChEBI:CHEBI:78494, ChEBI:CHEBI:456215; EC=6.1.1.4;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00049};
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00049}.
CC   -!- SIMILARITY: Belongs to the class-I aminoacyl-tRNA synthetase family.
CC       {ECO:0000255|HAMAP-Rule:MF_00049}.
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DR   EMBL; BA000019; BAB74982.1; -; Genomic_DNA.
DR   PIR; AD2216; AD2216.
DR   RefSeq; WP_010997434.1; NZ_RSCN01000001.1.
DR   AlphaFoldDB; Q8YS09; -.
DR   SMR; Q8YS09; -.
DR   STRING; 103690.17132378; -.
DR   EnsemblBacteria; BAB74982; BAB74982; BAB74982.
DR   KEGG; ana:alr3283; -.
DR   eggNOG; COG0495; Bacteria.
DR   OMA; TFMVLAP; -.
DR   OrthoDB; 32262at2; -.
DR   Proteomes; UP000002483; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0002161; F:aminoacyl-tRNA editing activity; IEA:InterPro.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0004823; F:leucine-tRNA ligase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006429; P:leucyl-tRNA aminoacylation; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.40.50.620; -; 2.
DR   HAMAP; MF_00049_B; Leu_tRNA_synth_B; 1.
DR   InterPro; IPR001412; aa-tRNA-synth_I_CS.
DR   InterPro; IPR002300; aa-tRNA-synth_Ia.
DR   InterPro; IPR002302; Leu-tRNA-ligase.
DR   InterPro; IPR025709; Leu_tRNA-synth_edit.
DR   InterPro; IPR013155; M/V/L/I-tRNA-synth_anticd-bd.
DR   InterPro; IPR015413; Methionyl/Leucyl_tRNA_Synth.
DR   InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR   InterPro; IPR009080; tRNAsynth_Ia_anticodon-bd.
DR   InterPro; IPR009008; Val/Leu/Ile-tRNA-synth_edit.
DR   PANTHER; PTHR43740; PTHR43740; 1.
DR   Pfam; PF08264; Anticodon_1; 1.
DR   Pfam; PF00133; tRNA-synt_1; 2.
DR   Pfam; PF13603; tRNA-synt_1_2; 1.
DR   Pfam; PF09334; tRNA-synt_1g; 1.
DR   PRINTS; PR00985; TRNASYNTHLEU.
DR   SUPFAM; SSF47323; SSF47323; 1.
DR   SUPFAM; SSF50677; SSF50677; 1.
DR   TIGRFAMs; TIGR00396; leuS_bact; 1.
DR   PROSITE; PS00178; AA_TRNA_LIGASE_I; 1.
PE   3: Inferred from homology;
KW   Aminoacyl-tRNA synthetase; ATP-binding; Cytoplasm; Ligase;
KW   Nucleotide-binding; Protein biosynthesis; Reference proteome.
FT   CHAIN           1..872
FT                   /note="Leucine--tRNA ligase"
FT                   /id="PRO_0000151961"
FT   MOTIF           42..52
FT                   /note="'HIGH' region"
FT   MOTIF           634..638
FT                   /note="'KMSKS' region"
FT   BINDING         637
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00049"
SQ   SEQUENCE   872 AA;  98549 MW;  A7B4CAD72C643C0C CRC64;
     MDSRYNPATL EEKWQKTWVE LGLDKTQTQS NKPKFYALSM FPYPSGSLHM GHVRNYTITD
     VIARLKRMQG YRVLHPMGWD AFGLPAENAA IDRGVPPAKW TYQNITQMRQ QLQRLGLSID
     WDSEVATCSP DYYKWTQWIF LQFLQAGLAY QKEAAVNWDP IDQTVLANEQ VDNEGRSWRS
     GAIVERKLLR QWFLKITDYA EELLNDLDKL TGWPERVKLM QANWIGKSSG AYLEFPIVGS
     NEKIAVYTTR PDTVYGVSYV VLAPEHPLTK QVTTKTQQAA VDTFIQEVTN QSELERTAED
     KPKRGIATGG KAINPFTGEE VPIWIADYVL YEYGTGAVMG VPAHDVRDFK FAQRYDLPID
     FVIAAPDDVA GFDLSPTSET EEVTQVVQIE YNQAYTEPGI LINSGAFTGM TSTDAKQAIV
     KYATEKGFGK ERIQYRLRDW LISRQRYWGA PIPVIHCPNC GIVPVPDKDL PVILPEEVEF
     TGRGGSPLAQ LESWVNVPCP TCGTPAKRET DTMDTFIDSS WYFLRFTDAR NEAQVFESAK
     TNDWMPVDQY VGGIEHAILH LLYSRFFTKV LRDRGLLNFD EPFERLLTQG MVQGLTYFNP
     NKGGKDKWVP SHLVNPNDPR DPQTGEPLQR LYATMSKSKG NGVAPEDVIA KYGVDTARMF
     ILFKAPPEKD LEWDEADVEG QFRFLNRVWR LVTDYVASGV NPKNKSGELS KSEKDLRRAI
     HTAIQSVTED LEDDYQFNTA ISELMKLSNA LTDANGKDSR VYAEGIKTLV VLLAPFAPHI
     AEELWRLLGN SESVHTQTWP AFDPAALVAD EITLVIQVNG KKRADIQVPS QADKAELEKY
     ARESEVVQRH LEGKEIKKVI VVPGKLVNFV VG