ID   SYH_RHILO               Reviewed;         500 AA.
AC   Q987T0;
DT   16-JUN-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2001, sequence version 1.
DT   25-MAY-2022, entry version 109.
DE   RecName: Full=Histidine--tRNA ligase;
DE            EC=6.1.1.21;
DE   AltName: Full=Histidyl-tRNA synthetase;
DE            Short=HisRS;
GN   Name=hisS; OrderedLocusNames=mlr6928;
OS   Mesorhizobium japonicum (strain LMG 29417 / CECT 9101 / MAFF 303099)
OS   (Mesorhizobium loti (strain MAFF 303099)).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Phyllobacteriaceae; Mesorhizobium.
OX   NCBI_TaxID=266835;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=LMG 29417 / CECT 9101 / MAFF 303099;
RX   PubMed=11214968; DOI=10.1093/dnares/7.6.331;
RA   Kaneko T., Nakamura Y., Sato S., Asamizu E., Kato T., Sasamoto S.,
RA   Watanabe A., Idesawa K., Ishikawa A., Kawashima K., Kimura T., Kishida Y.,
RA   Kiyokawa C., Kohara M., Matsumoto M., Matsuno A., Mochizuki Y.,
RA   Nakayama S., Nakazaki N., Shimpo S., Sugimoto M., Takeuchi C., Yamada M.,
RA   Tabata S.;
RT   "Complete genome structure of the nitrogen-fixing symbiotic bacterium
RT   Mesorhizobium loti.";
RL   DNA Res. 7:331-338(2000).
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + L-histidine + tRNA(His) = AMP + diphosphate + H(+) + L-
CC         histidyl-tRNA(His); Xref=Rhea:RHEA:17313, Rhea:RHEA-COMP:9665,
CC         Rhea:RHEA-COMP:9689, ChEBI:CHEBI:15378, ChEBI:CHEBI:30616,
CC         ChEBI:CHEBI:33019, ChEBI:CHEBI:57595, ChEBI:CHEBI:78442,
CC         ChEBI:CHEBI:78527, ChEBI:CHEBI:456215; EC=6.1.1.21;
CC   -!- SUBUNIT: Homodimer. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the class-II aminoacyl-tRNA synthetase family.
CC       {ECO:0000305}.
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DR   EMBL; BA000012; BAB53120.1; -; Genomic_DNA.
DR   RefSeq; WP_010914430.1; NC_002678.2.
DR   AlphaFoldDB; Q987T0; -.
DR   SMR; Q987T0; -.
DR   STRING; 266835.14026523; -.
DR   PRIDE; Q987T0; -.
DR   EnsemblBacteria; BAB53120; BAB53120; BAB53120.
DR   KEGG; mlo:mlr6928; -.
DR   PATRIC; fig|266835.9.peg.5510; -.
DR   eggNOG; COG0124; Bacteria.
DR   HOGENOM; CLU_025113_3_2_5; -.
DR   OMA; CDFDFIG; -.
DR   OrthoDB; 277998at2; -.
DR   Proteomes; UP000000552; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0004821; F:histidine-tRNA ligase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006427; P:histidyl-tRNA aminoacylation; IEA:UniProtKB-UniRule.
DR   CDD; cd00773; HisRS-like_core; 1.
DR   CDD; cd00859; HisRS_anticodon; 1.
DR   Gene3D; 3.30.930.10; -; 1.
DR   Gene3D; 3.40.50.800; -; 1.
DR   HAMAP; MF_00127; His_tRNA_synth; 1.
DR   InterPro; IPR006195; aa-tRNA-synth_II.
DR   InterPro; IPR045864; aa-tRNA-synth_II/BPL/LPL.
DR   InterPro; IPR004154; Anticodon-bd.
DR   InterPro; IPR036621; Anticodon-bd_dom_sf.
DR   InterPro; IPR015807; His-tRNA-ligase.
DR   InterPro; IPR041715; HisRS-like_core.
DR   InterPro; IPR004516; HisRS/HisZ.
DR   InterPro; IPR033656; HisRS_anticodon.
DR   Pfam; PF03129; HGTP_anticodon; 1.
DR   Pfam; PF13393; tRNA-synt_His; 1.
DR   PIRSF; PIRSF001549; His-tRNA_synth; 1.
DR   SUPFAM; SSF55681; SSF55681; 1.
DR   TIGRFAMs; TIGR00442; hisS; 1.
DR   PROSITE; PS50862; AA_TRNA_LIGASE_II; 1.
PE   3: Inferred from homology;
KW   Aminoacyl-tRNA synthetase; ATP-binding; Cytoplasm; Ligase;
KW   Nucleotide-binding; Protein biosynthesis.
FT   CHAIN           1..500
FT                   /note="Histidine--tRNA ligase"
FT                   /id="PRO_0000136234"
SQ   SEQUENCE   500 AA;  54547 MW;  290E8BB18CA2DF84 CRC64;
     MADKSEKTKA RLPRGFADRS AEDIRAVEKM MATIRSVYEL YGFEPADQPL IEYTDALGKF
     LPDQDRPNEG VFSFQDDDEQ WLSLRYDLTA PTARFVAENY ERLPKPYRSY RSGWVFRNEK
     PGPGRFRQFM QFDADTIGTP GVAADAEMAM MMADVMEALG IKRGDYVIRV NNRKVLDGVL
     EAIGLGGEEN IGRRLTVLRA IDKLDKLGPE GVKLLLGPGR WDGGKEGEGD FAKGAGLNNG
     QAEAVLQATA RNAQAAQDSV VDSNATYQEG VGELATIEAL VRAAGYGEDR IAMDRSVVRG
     LEYYTGPVFE AELLAEIPNE DGQIVRFGSV GGGGRYDGLV SRFRGEPVPA TGFSIGVSRL
     MTALKNLGKL DNADVIAPVV VLVMDKDTES LGRYQKMVSE LRAAGIRSEM YLGGAGMKAQ
     LKYADRRGCP VAIIQGGDER AKGELQIKDL IEGARMSAEI TDNAEWRAAR PAQVTVAESE
     LVAEVKKILA AQAEERARGK