ID   SYFA_CYTH3              Reviewed;         344 AA.
AC   Q11Q26;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   22-AUG-2006, sequence version 1.
DT   03-AUG-2022, entry version 90.
DE   RecName: Full=Phenylalanine--tRNA ligase alpha subunit {ECO:0000255|HAMAP-Rule:MF_00281};
DE            EC=6.1.1.20 {ECO:0000255|HAMAP-Rule:MF_00281};
DE   AltName: Full=Phenylalanyl-tRNA synthetase alpha subunit {ECO:0000255|HAMAP-Rule:MF_00281};
DE            Short=PheRS {ECO:0000255|HAMAP-Rule:MF_00281};
GN   Name=pheS {ECO:0000255|HAMAP-Rule:MF_00281}; OrderedLocusNames=CHU_3247;
OS   Cytophaga hutchinsonii (strain ATCC 33406 / DSM 1761 / CIP 103989 / NBRC
OS   15051 / NCIMB 9469 / D465).
OC   Bacteria; Bacteroidetes; Cytophagia; Cytophagales; Cytophagaceae;
OC   Cytophaga.
OX   NCBI_TaxID=269798;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 33406 / DSM 1761 / CIP 103989 / NBRC 15051 / NCIMB 9469 / D465;
RX   PubMed=17400776; DOI=10.1128/aem.00225-07;
RA   Xie G., Bruce D.C., Challacombe J.F., Chertkov O., Detter J.C., Gilna P.,
RA   Han C.S., Lucas S., Misra M., Myers G.L., Richardson P., Tapia R.,
RA   Thayer N., Thompson L.S., Brettin T.S., Henrissat B., Wilson D.B.,
RA   McBride M.J.;
RT   "Genome sequence of the cellulolytic gliding bacterium Cytophaga
RT   hutchinsonii.";
RL   Appl. Environ. Microbiol. 73:3536-3546(2007).
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         Evidence={ECO:0000255|HAMAP-Rule:MF_00281};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00281};
CC       Note=Binds 2 magnesium ions per tetramer. {ECO:0000255|HAMAP-
CC       Rule:MF_00281};
CC   -!- SUBUNIT: Tetramer of two alpha and two beta subunits.
CC       {ECO:0000255|HAMAP-Rule:MF_00281}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00281}.
CC   -!- SIMILARITY: Belongs to the class-II aminoacyl-tRNA synthetase family.
CC       Phe-tRNA synthetase alpha subunit type 1 subfamily. {ECO:0000255|HAMAP-
CC       Rule:MF_00281}.
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DR   EMBL; CP000383; ABG60487.1; -; Genomic_DNA.
DR   RefSeq; WP_011586597.1; NZ_FPJX01000011.1.
DR   AlphaFoldDB; Q11Q26; -.
DR   SMR; Q11Q26; -.
DR   STRING; 269798.CHU_3247; -.
DR   EnsemblBacteria; ABG60487; ABG60487; CHU_3247.
DR   KEGG; chu:CHU_3247; -.
DR   eggNOG; COG0016; Bacteria.
DR   HOGENOM; CLU_025086_0_1_10; -.
DR   OMA; DWHNFTA; -.
DR   OrthoDB; 469058at2; -.
DR   Proteomes; UP000001822; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
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; IEA:UniProtKB-UniRule.
DR   GO; GO:0000049; F:tRNA binding; IEA:InterPro.
DR   GO; GO:0006432; P:phenylalanyl-tRNA aminoacylation; IEA:UniProtKB-UniRule.
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..344
FT                   /note="Phenylalanine--tRNA ligase alpha subunit"
FT                   /id="PRO_1000006821"
FT   BINDING         255
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_note="shared with beta subunit"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00281"
SQ   SEQUENCE   344 AA;  39718 MW;  13A2CAD4FF8A0D9C CRC64;
     MLDKIKELTQ TIEDFSIESK EQLEQFRLEY LSKKGKITSM FDGFDFKTVA PEIKKSMGQE
     MNKLKVLAQT KFEELQDKLN TGSNDNSVYQ KIDTSLPVIP NELGGRHPIN IVREQIYTVF
     ERMGFNLSDG PEIEDDFHNF TALNFPENHP AREMQDTFFI ERNPDIVLRT HTSSVQVRVM
     ENQKPPIRTI SPGRVYRNEA ISARAHCMFH QIEGLYVDKN VSFADLKNTL YHFSKEMFGK
     DTQIRFRPSF FPFTEPSAEM DISCFICNGK GCNICKQSGW VEIGGAGMLD PNVLINAKID
     PKVYSGFAFG MGIERITMLK YQIKDLRLFT ENDVRFLRQF KHAE