DTD_BIFLD
ID DTD_BIFLD Reviewed; 162 AA.
AC B3DQN7;
DT 14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT 22-JUL-2008, sequence version 1.
DT 25-MAY-2022, entry version 72.
DE RecName: Full=D-aminoacyl-tRNA deacylase {ECO:0000255|HAMAP-Rule:MF_00518};
DE Short=DTD {ECO:0000255|HAMAP-Rule:MF_00518};
DE EC=3.1.1.96 {ECO:0000255|HAMAP-Rule:MF_00518};
DE AltName: Full=Gly-tRNA(Ala) deacylase {ECO:0000255|HAMAP-Rule:MF_00518};
GN Name=dtd {ECO:0000255|HAMAP-Rule:MF_00518}; OrderedLocusNames=BLD_0187;
OS Bifidobacterium longum (strain DJO10A).
OC Bacteria; Actinobacteria; Bifidobacteriales; Bifidobacteriaceae;
OC Bifidobacterium.
OX NCBI_TaxID=205913;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DJO10A;
RX PubMed=18505588; DOI=10.1186/1471-2164-9-247;
RA Lee J.H., Karamychev V.N., Kozyavkin S.A., Mills D., Pavlov A.R.,
RA Pavlova N.V., Polouchine N.N., Richardson P.M., Shakhova V.V.,
RA Slesarev A.I., Weimer B., O'Sullivan D.J.;
RT "Comparative genomic analysis of the gut bacterium Bifidobacterium longum
RT reveals loci susceptible to deletion during pure culture growth.";
RL BMC Genomics 9:247-247(2008).
CC -!- FUNCTION: An aminoacyl-tRNA editing enzyme that deacylates mischarged
CC D-aminoacyl-tRNAs. Also deacylates mischarged glycyl-tRNA(Ala),
CC protecting cells against glycine mischarging by AlaRS. Acts via tRNA-
CC based rather than protein-based catalysis; rejects L-amino acids rather
CC than detecting D-amino acids in the active site. By recycling D-
CC aminoacyl-tRNA to D-amino acids and free tRNA molecules, this enzyme
CC counteracts the toxicity associated with the formation of D-aminoacyl-
CC tRNA entities in vivo and helps enforce protein L-homochirality.
CC {ECO:0000255|HAMAP-Rule:MF_00518}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=glycyl-tRNA(Ala) + H2O = glycine + H(+) + tRNA(Ala);
CC Xref=Rhea:RHEA:53744, Rhea:RHEA-COMP:9657, Rhea:RHEA-COMP:13640,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:57305,
CC ChEBI:CHEBI:78442, ChEBI:CHEBI:78522; EC=3.1.1.96;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00518};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a D-aminoacyl-tRNA + H2O = a D-alpha-amino acid + a tRNA +
CC H(+); Xref=Rhea:RHEA:13953, Rhea:RHEA-COMP:10123, Rhea:RHEA-
CC COMP:10124, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:59871,
CC ChEBI:CHEBI:78442, ChEBI:CHEBI:79333; EC=3.1.1.96;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00518};
CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00518}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00518}.
CC -!- DOMAIN: A Gly-cisPro motif from one monomer fits into the active site
CC of the other monomer to allow specific chiral rejection of L-amino
CC acids. {ECO:0000255|HAMAP-Rule:MF_00518}.
CC -!- SIMILARITY: Belongs to the DTD family. {ECO:0000255|HAMAP-
CC Rule:MF_00518}.
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DR EMBL; CP000605; ACD97633.1; -; Genomic_DNA.
DR RefSeq; WP_007057516.1; NZ_AABM02000003.1.
DR AlphaFoldDB; B3DQN7; -.
DR SMR; B3DQN7; -.
DR EnsemblBacteria; ACD97633; ACD97633; BLD_0187.
DR KEGG; blj:BLD_0187; -.
DR HOGENOM; CLU_076901_1_0_11; -.
DR OMA; GVFQAHM; -.
DR Proteomes; UP000002419; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0051499; F:D-aminoacyl-tRNA deacylase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0106026; F:Gly-tRNA(Ala) hydrolase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0043908; F:Ser(Gly)-tRNA(Ala) hydrolase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0019478; P:D-amino acid catabolic process; IEA:UniProtKB-UniRule.
DR Gene3D; 3.50.80.10; -; 1.
DR HAMAP; MF_00518; Deacylase_Dtd; 1.
DR InterPro; IPR003732; Daa-tRNA_deacyls_DTD.
DR InterPro; IPR023509; DTD-like_sf.
DR PANTHER; PTHR10472; PTHR10472; 1.
DR Pfam; PF02580; Tyr_Deacylase; 1.
DR SUPFAM; SSF69500; SSF69500; 1.
DR TIGRFAMs; TIGR00256; TIGR00256; 1.
PE 3: Inferred from homology;
KW Cytoplasm; Hydrolase; RNA-binding; tRNA-binding.
FT CHAIN 1..162
FT /note="D-aminoacyl-tRNA deacylase"
FT /id="PRO_1000127496"
FT MOTIF 145..146
FT /note="Gly-cisPro motif, important for rejection of L-amino
FT acids"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00518"
SQ SEQUENCE 162 AA; 17853 MW; C03AACFFD32E434A CRC64;
MKVVLQRVSE ASVDVVNELG TLDPTFEPQQ IGPGFMILVG VTDEDGDKQI AWLAHKILNL
RVFEDAQGKM NRSIQDIGGE ILSISQFTLF ADVHKGNRPS FIKAGKPEHA DFMWIKFDEA
LRSGGVPVKE GRFGAHMRVG LVNDGPVTIV IDTEHDMPDG TR
