ID   MIAA_LAWIP              Reviewed;         303 AA.
AC   Q1MRN9;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   30-MAY-2006, sequence version 1.
DT   03-AUG-2022, entry version 95.
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=LI0281;
OS   Lawsonia intracellularis (strain PHE/MN1-00).
OC   Bacteria; Proteobacteria; Deltaproteobacteria; Desulfovibrionales;
OC   Desulfovibrionaceae; Lawsonia.
OX   NCBI_TaxID=363253;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PHE/MN1-00;
RA   Kaur K., Zhang Q., Beckler D., Munir S., Li L., Kinsley K., Herron L.,
RA   Peterson A., May B., Singh S., Gebhart C., Kapur V.;
RT   "The complete genome sequence of Lawsonia intracellularis: the causative
RT   agent of proliferative enteropathy.";
RL   Submitted (NOV-2005) to the EMBL/GenBank/DDBJ databases.
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; AM180252; CAJ54337.1; -; Genomic_DNA.
DR   RefSeq; WP_011526366.1; NC_008011.1.
DR   AlphaFoldDB; Q1MRN9; -.
DR   SMR; Q1MRN9; -.
DR   STRING; 363253.LI0281; -.
DR   KEGG; lip:LI0281; -.
DR   eggNOG; COG0324; Bacteria.
DR   HOGENOM; CLU_032616_0_1_7; -.
DR   OMA; YAKRQYT; -.
DR   OrthoDB; 1069591at2; -.
DR   Proteomes; UP000002430; 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..303
FT                   /note="tRNA dimethylallyltransferase"
FT                   /id="PRO_1000020616"
FT   REGION          36..39
FT                   /note="Interaction with substrate tRNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00185"
FT   REGION          159..163
FT                   /note="Interaction with substrate tRNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00185"
FT   BINDING         11..18
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00185"
FT   BINDING         13..18
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"
SQ   SEQUENCE   303 AA;  34858 MW;  AC93C84CE0651899 CRC64;
     MNYRKVICIV GPTGVGKSEI AFHLAKRYDG IIINADSRQL YKGVPIITAQ PTFEERSLIP
     HKLYACLDLH EKISAGRWAT LAAEQLDSVC HTKIPLLVGG TGLYLRALFD GIVTIPPIST
     ELSLTMEKQA EEKGISFLYN MLKVHDPLYA NSIHPNDRQR VLRALTVFYE TGKTFTWWHQ
     QVTEAYPATV LRIGIKIPLI ELAPLLEKRI DKMFVQGAIK EVITTYKRYF NKDVQNWSGI
     GYMELLGAIK GEYTFNEAKE RWLKNTRSYA KRQLTWFNAD KRIIWFCPDQ LEDIQKCVEN
     WLS