ID   MIAA_STRSV              Reviewed;         294 AA.
AC   A3CNS2;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   20-MAR-2007, sequence version 1.
DT   03-AUG-2022, entry version 92.
DE   RecName: Full=tRNA dimethylallyltransferase {ECO:0000255|HAMAP-Rule:MF_00185};
DE            EC=2.5.1.75 {ECO:0000255|HAMAP-Rule:MF_00185};
DE   AltName: Full=Dimethylallyl diphosphate:tRNA dimethylallyltransferase {ECO:0000255|HAMAP-Rule:MF_00185};
DE            Short=DMAPP:tRNA dimethylallyltransferase {ECO:0000255|HAMAP-Rule:MF_00185};
DE            Short=DMATase {ECO:0000255|HAMAP-Rule:MF_00185};
DE   AltName: Full=Isopentenyl-diphosphate:tRNA isopentenyltransferase {ECO:0000255|HAMAP-Rule:MF_00185};
DE            Short=IPP transferase {ECO:0000255|HAMAP-Rule:MF_00185};
DE            Short=IPPT {ECO:0000255|HAMAP-Rule:MF_00185};
DE            Short=IPTase {ECO:0000255|HAMAP-Rule:MF_00185};
GN   Name=miaA {ECO:0000255|HAMAP-Rule:MF_00185}; OrderedLocusNames=SSA_1433;
OS   Streptococcus sanguinis (strain SK36).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC   Streptococcus.
OX   NCBI_TaxID=388919;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SK36;
RX   PubMed=17277061; DOI=10.1128/jb.01808-06;
RA   Xu P., Alves J.M., Kitten T., Brown A., Chen Z., Ozaki L.S., Manque P.,
RA   Ge X., Serrano M.G., Puiu D., Hendricks S., Wang Y., Chaplin M.D., Akan D.,
RA   Paik S., Peterson D.L., Macrina F.L., Buck G.A.;
RT   "Genome of the opportunistic pathogen Streptococcus sanguinis.";
RL   J. Bacteriol. 189:3166-3175(2007).
CC   -!- FUNCTION: Catalyzes the transfer of a dimethylallyl group onto the
CC       adenine at position 37 in tRNAs that read codons beginning with
CC       uridine, leading to the formation of N6-(dimethylallyl)adenosine
CC       (i(6)A). {ECO:0000255|HAMAP-Rule:MF_00185}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=adenosine(37) in tRNA + dimethylallyl diphosphate =
CC         diphosphate + N(6)-dimethylallyladenosine(37) in tRNA;
CC         Xref=Rhea:RHEA:26482, Rhea:RHEA-COMP:10162, Rhea:RHEA-COMP:10375,
CC         ChEBI:CHEBI:33019, ChEBI:CHEBI:57623, ChEBI:CHEBI:74411,
CC         ChEBI:CHEBI:74415; EC=2.5.1.75; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00185};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00185};
CC   -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_00185}.
CC   -!- SIMILARITY: Belongs to the IPP transferase family. {ECO:0000255|HAMAP-
CC       Rule:MF_00185}.
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DR   EMBL; CP000387; ABN44827.1; -; Genomic_DNA.
DR   RefSeq; WP_011837132.1; NC_009009.1.
DR   RefSeq; YP_001035377.1; NC_009009.1.
DR   AlphaFoldDB; A3CNS2; -.
DR   SMR; A3CNS2; -.
DR   STRING; 388919.SSA_1433; -.
DR   EnsemblBacteria; ABN44827; ABN44827; SSA_1433.
DR   KEGG; ssa:SSA_1433; -.
DR   PATRIC; fig|388919.9.peg.1359; -.
DR   eggNOG; COG0324; Bacteria.
DR   HOGENOM; CLU_032616_0_1_9; -.
DR   OMA; YAKRQYT; -.
DR   OrthoDB; 1069591at2; -.
DR   Proteomes; UP000002148; Chromosome.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0052381; F:tRNA dimethylallyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0008033; P:tRNA processing; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.40.50.300; -; 1.
DR   HAMAP; MF_00185; IPP_trans; 1.
DR   InterPro; IPR039657; Dimethylallyltransferase.
DR   InterPro; IPR018022; IPT.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   PANTHER; PTHR11088; PTHR11088; 1.
DR   SUPFAM; SSF52540; SSF52540; 2.
DR   TIGRFAMs; TIGR00174; miaA; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Magnesium; Nucleotide-binding; Reference proteome;
KW   Transferase; tRNA processing.
FT   CHAIN           1..294
FT                   /note="tRNA dimethylallyltransferase"
FT                   /id="PRO_1000020675"
FT   REGION          35..38
FT                   /note="Interaction with substrate tRNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00185"
FT   BINDING         10..17
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00185"
FT   BINDING         12..17
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00185"
FT   SITE            101
FT                   /note="Interaction with substrate tRNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00185"
FT   SITE            127
FT                   /note="Interaction with substrate tRNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00185"
SQ   SEQUENCE   294 AA;  33522 MW;  09D408A6CA596B78 CRC64;
     MKTKIIVIVG PTAVGKTALS IEVAKRFNGQ IISGDSQQVY RGLDIGTAKI RPEEQEGIPH
     HLLDVREVGE SYSAYDFVTE AAQAIREIAA QDQLPIICGG TGLYIQSLLE GYHLGGSVPH
     EEILAYRAQL DSWSDEDLFR KIAELGIEIP QLNRRRAMRA LEIAHLGGSL ENSQPDYEAL
     LICLDDERER LYERINHRVD LMLEAGLLEE ARWLYEQAPI SQASKGIGYK ELFPYFEGRM
     SLEEAVDTLK QNTRRFAKRQ LTWFRNRMSV TFYQVGNPDY KNQVMEDIKN FLDK