ID   SYA_STRCO               Reviewed;         890 AA.
AC   Q9KXP9;
DT   02-AUG-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2000, sequence version 1.
DT   03-AUG-2022, entry version 112.
DE   RecName: Full=Alanine--tRNA ligase {ECO:0000255|HAMAP-Rule:MF_00036};
DE            EC=6.1.1.7 {ECO:0000255|HAMAP-Rule:MF_00036};
DE   AltName: Full=Alanyl-tRNA synthetase {ECO:0000255|HAMAP-Rule:MF_00036};
DE            Short=AlaRS {ECO:0000255|HAMAP-Rule:MF_00036};
GN   Name=alaS {ECO:0000255|HAMAP-Rule:MF_00036}; OrderedLocusNames=SCO1501;
GN   ORFNames=SC9C5.25c;
OS   Streptomyces coelicolor (strain ATCC BAA-471 / A3(2) / M145).
OC   Bacteria; Actinobacteria; Streptomycetales; Streptomycetaceae;
OC   Streptomyces; Streptomyces albidoflavus group.
OX   NCBI_TaxID=100226;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-471 / A3(2) / M145;
RX   PubMed=12000953; DOI=10.1038/417141a;
RA   Bentley S.D., Chater K.F., Cerdeno-Tarraga A.-M., Challis G.L.,
RA   Thomson N.R., James K.D., Harris D.E., Quail M.A., Kieser H., Harper D.,
RA   Bateman A., Brown S., Chandra G., Chen C.W., Collins M., Cronin A.,
RA   Fraser A., Goble A., Hidalgo J., Hornsby T., Howarth S., Huang C.-H.,
RA   Kieser T., Larke L., Murphy L.D., Oliver K., O'Neil S., Rabbinowitsch E.,
RA   Rajandream M.A., Rutherford K.M., Rutter S., Seeger K., Saunders D.,
RA   Sharp S., Squares R., Squares S., Taylor K., Warren T., Wietzorrek A.,
RA   Woodward J.R., Barrell B.G., Parkhill J., Hopwood D.A.;
RT   "Complete genome sequence of the model actinomycete Streptomyces coelicolor
RT   A3(2).";
RL   Nature 417:141-147(2002).
CC   -!- FUNCTION: Catalyzes the attachment of alanine to tRNA(Ala) in a two-
CC       step reaction: alanine is first activated by ATP to form Ala-AMP and
CC       then transferred to the acceptor end of tRNA(Ala). Also edits
CC       incorrectly charged Ser-tRNA(Ala) and Gly-tRNA(Ala) via its editing
CC       domain. {ECO:0000255|HAMAP-Rule:MF_00036}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + L-alanine + tRNA(Ala) = AMP + diphosphate + L-alanyl-
CC         tRNA(Ala); Xref=Rhea:RHEA:12540, Rhea:RHEA-COMP:9657, Rhea:RHEA-
CC         COMP:9923, ChEBI:CHEBI:30616, ChEBI:CHEBI:33019, ChEBI:CHEBI:57972,
CC         ChEBI:CHEBI:78442, ChEBI:CHEBI:78497, ChEBI:CHEBI:456215; EC=6.1.1.7;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00036};
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00036};
CC       Note=Binds 1 zinc ion per subunit. {ECO:0000255|HAMAP-Rule:MF_00036};
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00036}.
CC   -!- DOMAIN: Consists of three domains; the N-terminal catalytic domain, the
CC       editing domain and the C-terminal C-Ala domain. The editing domain
CC       removes incorrectly charged amino acids, while the C-Ala domain, along
CC       with tRNA(Ala), serves as a bridge to cooperatively bring together the
CC       editing and aminoacylation centers thus stimulating deacylation of
CC       misacylated tRNAs. {ECO:0000255|HAMAP-Rule:MF_00036}.
CC   -!- SIMILARITY: Belongs to the class-II aminoacyl-tRNA synthetase family.
CC       {ECO:0000255|HAMAP-Rule:MF_00036}.
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DR   EMBL; AL939109; CAB93381.1; -; Genomic_DNA.
DR   RefSeq; NP_625781.1; NC_003888.3.
DR   RefSeq; WP_003977325.1; NZ_VNID01000021.1.
DR   AlphaFoldDB; Q9KXP9; -.
DR   SMR; Q9KXP9; -.
DR   STRING; 100226.SCO1501; -.
DR   PRIDE; Q9KXP9; -.
DR   GeneID; 1096927; -.
DR   KEGG; sco:SCO1501; -.
DR   PATRIC; fig|100226.15.peg.1510; -.
DR   eggNOG; COG0013; Bacteria.
DR   HOGENOM; CLU_004485_1_1_11; -.
DR   InParanoid; Q9KXP9; -.
DR   OMA; YHHTMFE; -.
DR   PhylomeDB; Q9KXP9; -.
DR   Proteomes; UP000001973; Chromosome.
DR   GO; GO:0005829; C:cytosol; IBA:GO_Central.
DR   GO; GO:0004813; F:alanine-tRNA ligase activity; IBA:GO_Central.
DR   GO; GO:0016597; F:amino acid binding; IBA:GO_Central.
DR   GO; GO:0002161; F:aminoacyl-tRNA editing activity; IBA:GO_Central.
DR   GO; GO:0005524; F:ATP binding; IBA:GO_Central.
DR   GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0006419; P:alanyl-tRNA aminoacylation; IBA:GO_Central.
DR   GO; GO:0006400; P:tRNA modification; IBA:GO_Central.
DR   Gene3D; 3.30.930.10; -; 1.
DR   HAMAP; MF_00036_B; Ala_tRNA_synth_B; 1.
DR   InterPro; IPR045864; aa-tRNA-synth_II/BPL/LPL.
DR   InterPro; IPR002318; Ala-tRNA-lgiase_IIc.
DR   InterPro; IPR018162; Ala-tRNA-ligase_IIc_anticod-bd.
DR   InterPro; IPR018165; Ala-tRNA-synth_IIc_core.
DR   InterPro; IPR018164; Ala-tRNA-synth_IIc_N.
DR   InterPro; IPR023033; Ala_tRNA_ligase_euk/bac.
DR   InterPro; IPR003156; DHHA1_dom.
DR   InterPro; IPR018163; Thr/Ala-tRNA-synth_IIc_edit.
DR   InterPro; IPR009000; Transl_B-barrel_sf.
DR   InterPro; IPR012947; tRNA_SAD.
DR   Pfam; PF02272; DHHA1; 1.
DR   Pfam; PF01411; tRNA-synt_2c; 1.
DR   Pfam; PF07973; tRNA_SAD; 1.
DR   PRINTS; PR00980; TRNASYNTHALA.
DR   SMART; SM00863; tRNA_SAD; 1.
DR   SUPFAM; SSF101353; SSF101353; 1.
DR   SUPFAM; SSF50447; SSF50447; 1.
DR   SUPFAM; SSF55186; SSF55186; 1.
DR   SUPFAM; SSF55681; SSF55681; 1.
DR   TIGRFAMs; TIGR00344; alaS; 1.
DR   PROSITE; PS50860; AA_TRNA_LIGASE_II_ALA; 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..890
FT                   /note="Alanine--tRNA ligase"
FT                   /id="PRO_0000075224"
FT   BINDING         573
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00036"
FT   BINDING         577
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00036"
FT   BINDING         675
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00036"
FT   BINDING         679
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00036"
SQ   SEQUENCE   890 AA;  95786 MW;  05B2FD563D35F4DF CRC64;
     MESAEIRRRW LSFFEERGHT VVPSASLIAD DPTLLLVPAG MVPFKPYFLG EVKPPFDRAT
     SVQKCVRTPD IEEVGKTTRH GTFFQMCGNF SFGDYFKEGA ITYAWELLTS AQDKGGYGLD
     PERLWITVYQ DDDEAERIWH DVVGVPSERI QRLGKKDNYW SMGVPGPCGP CSEINYDRGP
     EFGVEGGPAV NDERYVEIWN LVFMQYERGE GIGKEEFEIL GELPSKNIDT GLGLERLAMI
     LQGVQNMYEI DTSMAVINKA TELTGVAYGD AQASDVSLRV VTDHMRTSVM LIGDGVTPGN
     EGRGYVLRRI MRRAIRNMRL LGATGPVVKD LIDVVIGMMG QQYPELVTDR ERIEKVALAE
     ENAFLKTLKA GTNILDTAVS DTKASGGTVL AGDKAFLLHD TWGFPIDLTL EMAAEQGLSV
     DEDGFRRLMK EQRERAKADA QAKKTGHAGA GAYREIADKA GATDFVGYTD TESESTIVGI
     LVDGASSPAA TEGDEVEIVL DRTPFYAEGG GQIGDTGRIR VDTGAVIEVR DCQKPVPGVY
     VHKGVVQVGE VTVGAKAQAS IDDRRRKAIA RAHSATHLTH QALRDALGPT AAQAGSENQP
     GRFRFDFGSP SAVPTAVMTD VEQKINEVLA RDLDVRADVM GIDEAKKQGA IAEFGEKYGE
     RVRVVTIGDF SKELCGGTHV HNTAQLGLVK LLGESSIGSG VRRIEALVGV DAYSFLAREH
     TVVAQLQELI KGRPEELPEK VSAMLGKLKD AEKEIEKFRA EKVLQAAGGL ADSAKDVRGV
     ALVTGQVPDG TTADDLRKLV LDVRGRIQGG RAAVVALFTT VNGKPLTVIA TNEAARERGL
     KAGDLVRTAA KTLGGGGGGK PDVAQGGGQN AAAIGDAVDA VERLVADTAK