ID   SYFA_HELPY              Reviewed;         328 AA.
AC   P56146;
DT   01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1997, sequence version 1.
DT   03-AUG-2022, entry version 124.
DE   RecName: Full=Phenylalanine--tRNA ligase alpha subunit;
DE            EC=6.1.1.20;
DE   AltName: Full=Phenylalanyl-tRNA synthetase alpha subunit;
DE            Short=PheRS;
GN   Name=pheS; OrderedLocusNames=HP_0403;
OS   Helicobacter pylori (strain ATCC 700392 / 26695) (Campylobacter pylori).
OC   Bacteria; Proteobacteria; Epsilonproteobacteria; Campylobacterales;
OC   Helicobacteraceae; Helicobacter.
OX   NCBI_TaxID=85962;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700392 / 26695;
RX   PubMed=9252185; DOI=10.1038/41483;
RA   Tomb J.-F., White O., Kerlavage A.R., Clayton R.A., Sutton G.G.,
RA   Fleischmann R.D., Ketchum K.A., Klenk H.-P., Gill S.R., Dougherty B.A.,
RA   Nelson K.E., Quackenbush J., Zhou L., Kirkness E.F., Peterson S.N.,
RA   Loftus B.J., Richardson D.L., Dodson R.J., Khalak H.G., Glodek A.,
RA   McKenney K., FitzGerald L.M., Lee N., Adams M.D., Hickey E.K., Berg D.E.,
RA   Gocayne J.D., Utterback T.R., Peterson J.D., Kelley J.M., Cotton M.D.,
RA   Weidman J.F., Fujii C., Bowman C., Watthey L., Wallin E., Hayes W.S.,
RA   Borodovsky M., Karp P.D., Smith H.O., Fraser C.M., Venter J.C.;
RT   "The complete genome sequence of the gastric pathogen Helicobacter
RT   pylori.";
RL   Nature 388:539-547(1997).
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + L-phenylalanine + tRNA(Phe) = AMP + diphosphate + H(+) +
CC         L-phenylalanyl-tRNA(Phe); Xref=Rhea:RHEA:19413, Rhea:RHEA-COMP:9668,
CC         Rhea:RHEA-COMP:9699, ChEBI:CHEBI:15378, ChEBI:CHEBI:30616,
CC         ChEBI:CHEBI:33019, ChEBI:CHEBI:58095, ChEBI:CHEBI:78442,
CC         ChEBI:CHEBI:78531, ChEBI:CHEBI:456215; EC=6.1.1.20;
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Evidence={ECO:0000250};
CC       Note=Binds 2 magnesium ions per tetramer. {ECO:0000250};
CC   -!- SUBUNIT: Tetramer of two alpha and two beta subunits. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the class-II aminoacyl-tRNA synthetase family.
CC       Phe-tRNA synthetase alpha subunit type 1 subfamily. {ECO:0000305}.
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DR   EMBL; AE000511; AAD07472.1; -; Genomic_DNA.
DR   PIR; C64570; C64570.
DR   RefSeq; NP_207201.1; NC_000915.1.
DR   RefSeq; WP_000557020.1; NC_018939.1.
DR   AlphaFoldDB; P56146; -.
DR   SMR; P56146; -.
DR   STRING; 85962.C694_02045; -.
DR   PaxDb; P56146; -.
DR   EnsemblBacteria; AAD07472; AAD07472; HP_0403.
DR   KEGG; hpy:HP_0403; -.
DR   PATRIC; fig|85962.47.peg.427; -.
DR   eggNOG; COG0016; Bacteria.
DR   OMA; DWHNFTA; -.
DR   PhylomeDB; P56146; -.
DR   Proteomes; UP000000429; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IBA:GO_Central.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0004826; F:phenylalanine-tRNA ligase activity; IBA:GO_Central.
DR   GO; GO:0000049; F:tRNA binding; IEA:InterPro.
DR   GO; GO:0006432; P:phenylalanyl-tRNA aminoacylation; IBA:GO_Central.
DR   Gene3D; 3.30.930.10; -; 1.
DR   HAMAP; MF_00281; Phe_tRNA_synth_alpha1; 1.
DR   InterPro; IPR006195; aa-tRNA-synth_II.
DR   InterPro; IPR045864; aa-tRNA-synth_II/BPL/LPL.
DR   InterPro; IPR004529; Phe-tRNA-synth_IIc_asu.
DR   InterPro; IPR004530; Phe-tRNA-synth_IIc_mito.
DR   InterPro; IPR004188; Phe-tRNA_ligase_II_N.
DR   InterPro; IPR022911; Phe_tRNA_ligase_alpha1_bac.
DR   InterPro; IPR002319; Phenylalanyl-tRNA_Synthase.
DR   InterPro; IPR010978; tRNA-bd_arm.
DR   PANTHER; PTHR11538:SF41; PTHR11538:SF41; 1.
DR   Pfam; PF02912; Phe_tRNA-synt_N; 1.
DR   Pfam; PF01409; tRNA-synt_2d; 1.
DR   SUPFAM; SSF46589; SSF46589; 1.
DR   SUPFAM; SSF55681; SSF55681; 1.
DR   TIGRFAMs; TIGR00468; pheS; 1.
DR   PROSITE; PS50862; AA_TRNA_LIGASE_II; 1.
PE   3: Inferred from homology;
KW   Aminoacyl-tRNA synthetase; ATP-binding; Cytoplasm; Ligase; Magnesium;
KW   Metal-binding; Nucleotide-binding; Protein biosynthesis;
KW   Reference proteome.
FT   CHAIN           1..328
FT                   /note="Phenylalanine--tRNA ligase alpha subunit"
FT                   /id="PRO_0000126714"
FT   BINDING         245
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_note="shared with beta subunit"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   328 AA;  38045 MW;  176FF8115DC1543A CRC64;
     MHTLIERLEK VTNSKELEEA RLNALGKKGV FADKFNQLKH LNGEEKNAFA KEIHHYKQAF
     EKAFEWKKKA IIELELEERL KKEKIDVSLF NAIKTSSSHP LNYTKNKIIE FFTPLGYKLE
     IGSLVEDDFH NFSALNLPPY HPARDMQDTF YFKDHKLLRT HTSPVQIHTM QEQTPPIKMI
     CLGETFRRDY DLTHTPMFHQ IEGLVVDQKG NIRFTHLKGV IEDFLHYFFG GVKLRWRSSF
     FPFTEPSAEV DISCVFCKQE GCRVCSHTGW LEVLGCGMVN NAVFEAIGYE NVSGFAFGMG
     IERLAMLTCQ INDLRSFFET DLRVLESF