ID   SYA_SYNSC               Reviewed;         889 AA.
AC   Q3AGN4;
DT   02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT   22-NOV-2005, sequence version 1.
DT   03-AUG-2022, entry version 99.
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};
GN   OrderedLocusNames=Syncc9605_2518;
OS   Synechococcus sp. (strain CC9605).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC   unclassified Synechococcus.
OX   NCBI_TaxID=110662;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CC9605;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA   Hammon N., Israni S., Pitluck S., Schmutz J., Martinez M., Larimer F.,
RA   Land M., Kyrpides N., Ivanova N., Richardson P.;
RT   "Complete sequence of Synechococcus sp. CC9605.";
RL   Submitted (JUL-2005) to the EMBL/GenBank/DDBJ databases.
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; CP000110; ABB36248.1; -; Genomic_DNA.
DR   RefSeq; WP_011365443.1; NC_007516.1.
DR   AlphaFoldDB; Q3AGN4; -.
DR   SMR; Q3AGN4; -.
DR   STRING; 110662.Syncc9605_2518; -.
DR   EnsemblBacteria; ABB36248; ABB36248; Syncc9605_2518.
DR   KEGG; syd:Syncc9605_2518; -.
DR   eggNOG; COG0013; Bacteria.
DR   HOGENOM; CLU_004485_1_0_3; -.
DR   OMA; YHHTMFE; -.
DR   OrthoDB; 91428at2; -.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004813; F:alanine-tRNA ligase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
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; IEA:UniProtKB-UniRule.
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; RNA-binding; tRNA-binding; Zinc.
FT   CHAIN           1..889
FT                   /note="Alanine--tRNA ligase"
FT                   /id="PRO_0000347838"
FT   BINDING         569
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00036"
FT   BINDING         573
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00036"
FT   BINDING         671
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"
SQ   SEQUENCE   889 AA;  95105 MW;  4B7602BF429832B9 CRC64;
     MVAVASSSSA ASAPRSGEEI REAFLNFYAE RGHKRMASAS LIPDDPTVLL TIAGMLPFKP
     VFLGQQERPA PRATSSQKCI RTNDIENVGR TARHHTFFEM LGNFSFGDYF KQRAIEWAWE
     LSTGVYGIDP KNLVVSVFRE DDEAELIWRD VVGVNPKRII RMDEADNFWA SGPTGPCGPC
     SEIYYDFKPE LGDEDIDLED DDRFIEFYNL VFMQYNRDAE GTLTPLANRN IDTGMGLERM
     AQILQKVPNN YETDLIFPLI QAAADLAGVD YHQLNDKGKT SLKVIGDHSR AVTQLICDGV
     TASNLGRGYI LRRLLRRVVR HGRLLGIDKP FLVTMGEAAI ALLKGAHPSV IERQEVILAE
     LQREEARFLE TLERGEKLLA EVLASKPTQI SGAQAFELYD TYGFPLELTQ EIAEEQGLAV
     DLDGFEAAME EQRQRAKAAA VSIDLTLQDA IDQVVADQAA TCFEGYEALD HASCVQALVV
     NGGPSTTAKA GDAVQVVLDT TPFYGEGGGQ VGDRGVLAGS DLIVRIESVS RSRDVFVHAG
     RVERGELALG DTVKAQVDRA CRRRAQANHT ATHLLQAALK QVVDPGIGQA GSLVDFDRLR
     FDFHCPTAVT PDQLQQVETL INGWINEAHA LQVQEMAIDQ AKAAGAVAMF GEKYADVVRV
     VDVPGVSMEL CGGTHVTNTA EIGLFKIVAE SGVAAGIRRI EAVAGPAVLA YLNERDVVVK
     QLGDRFKAQP AEIVDRVAAL QEELKATGKA LAAAQAELAV AKAGALAAKA EAVGDFQLLV
     ERLDGVDGAG LQGAAQSLAD QLGDGAAVVI GGLPDPGDMG KVILVAAFGQ QVIAAKLQAG
     KFIGGIAKQC GGGGGGRPNL AQAGGRDGAA LPGALDAAQA ELTSAFRAL