SYA_ECODH
ID SYA_ECODH Reviewed; 876 AA.
AC B1XCM5;
DT 02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT 20-MAY-2008, sequence version 1.
DT 03-AUG-2022, entry version 76.
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=ECDH10B_2865;
OS Escherichia coli (strain K12 / DH10B).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC Enterobacteriaceae; Escherichia.
OX NCBI_TaxID=316385;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=K12 / DH10B;
RX PubMed=18245285; DOI=10.1128/jb.01695-07;
RA Durfee T., Nelson R., Baldwin S., Plunkett G. III, Burland V., Mau B.,
RA Petrosino J.F., Qin X., Muzny D.M., Ayele M., Gibbs R.A., Csorgo B.,
RA Posfai G., Weinstock G.M., Blattner F.R.;
RT "The complete genome sequence of Escherichia coli DH10B: insights into the
RT biology of a laboratory workhorse.";
RL J. Bacteriol. 190:2597-2606(2008).
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 -!- SUBUNIT: Homotetramer. {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; CP000948; ACB03816.1; -; Genomic_DNA.
DR RefSeq; WP_000047184.1; NC_010473.1.
DR AlphaFoldDB; B1XCM5; -.
DR SMR; B1XCM5; -.
DR KEGG; ecd:ECDH10B_2865; -.
DR HOGENOM; CLU_004485_1_1_6; -.
DR OMA; YHHTMFE; -.
DR BioCyc; ECOL316385:ECDH10B_RS14545-MON; -.
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 Acetylation; Aminoacyl-tRNA synthetase; ATP-binding; Cytoplasm; Ligase;
KW Metal-binding; Nucleotide-binding; Protein biosynthesis; RNA-binding;
KW tRNA-binding; Zinc.
FT CHAIN 1..876
FT /note="Alanine--tRNA ligase"
FT /id="PRO_0000347597"
FT BINDING 564
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00036"
FT BINDING 568
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00036"
FT BINDING 666
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00036"
FT BINDING 670
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00036"
FT MOD_RES 74
FT /note="N6-acetyllysine"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00036"
SQ SEQUENCE 876 AA; 96032 MW; 73F69C69FCF8C08C CRC64;
MSKSTAEIRQ AFLDFFHSKG HQVVASSSLV PHNDPTLLFT NAGMNQFKDV FLGLDKRNYS
RATTSQRCVR AGGKHNDLEN VGYTARHHTF FEMLGNFSFG DYFKHDAIQF AWELLTSEKW
FALPKERLWV TVYESDDEAY EIWEKEVGIP RERIIRIGDN KGAPYASDNF WQMGDTGPCG
PCTEIFYDHG DHIWGGPPGS PEEDGDRYIE IWNIVFMQFN RQADGTMEPL PKPSVDTGMG
LERIAAVLQH VNSNYDIDLF RTLIQAVAKV TGATDLSNKS LRVIADHIRS CAFLIADGVM
PSNENRGYVL RRIIRRAVRH GNMLGAKETF FYKLVGPLID VMGSAGEDLK RQQAQVEQVL
KTEEEQFART LERGLALLDE ELAKLSGDTL DGETAFRLYD TYGFPVDLTA DVCRERNIKV
DEAGFEAAME EQRRRAREAS GFGADYNAMI RVDSASEFKG YDHLELNGKV TALFVDGKAV
DAINAGQEAV VVLDQTPFYA ESGGQVGDKG ELKGANFSFA VEDTQKYGQA IGHIGKLAAG
SLKVGDAVQA DVDEARRARI RLNHSATHLM HAALRQVLGT HVSQKGSLVN DKVLRFDFSH
NEAMKPEEIR AVEDLVNTQI RRNLPIETNI MDLEAAKAKG AMALFGEKYD ERVRVLSMGD
FSTELCGGTH ASRTGDIGLF RIISESGTAA GVRRIEAVTG EGAIATVHAD SDRLSEVAHL
LKGDSNNLAD KVRSVLERTR QLEKELQQLK EQAAAQESAN LSSKAIDVNG VKLLVSELSG
VEPKMLRTMV DDLKNQLGST IIVLATVVEG KVSLIAGVSK DVTDRVKAGE LIGMVAQQVG
GKGGGRPDMA QAGGTDAAAL PAALASVKGW VSAKLQ
