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HAMAP annotation rule: MF_00185

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Accession MF_00185
Dates 1-JUN-2001 (Created)
25-NOV-2009 (Last updated, Version 15)
Data class Protein
Names IPP_trans



Identifier MIAA
Protein name
RecName: Full=tRNA Delta(2)-isopentenylpyrophosphate transferase;
Short=IPP transferase;
EC=2.5.1.8;
AltName: Full=Isopentenyl-diphosphate:tRNA isopentenyltransferase;
Short=IPTase;
Short=IPPT;
AltName: Full=Dimethylallyl diphosphate:tRNA dimethylallyltransferase;
Short=DMAPP:tRNA dimethylallyltransferase;
Short=DMATase;
Gene name miaA
FUNCTION: Catalyzes the transfer of a dimethylallyl group onto the adenine at position 37 in tRNAs that read codons beginning with uridine, leading to the formation of N6-(dimethylallyl)adenosine (i(6)A) (By similarity).
CATALYTIC ACTIVITY: Isopentenyl diphosphate + tRNA = diphosphate + tRNA containing 6-isopentenyladenosine.
COFACTOR: Magnesium (By similarity).
SUBUNIT: Monomer (By similarity).
SIMILARITY: Belongs to the IPP transferase family.
Pfam PF01715; IPPT; 1;
TIGRFAMs TIGR00174; miaA; 1;
GO:0005524; Molecular function: ATP binding.
GO:0004811; Molecular function: tRNA isopentenyltransferase activity.
GO:0008033; Biological process: tRNA processing.
From: MIAA_ECOLI (P16384)
Key     From     To       Description   Condition   FTGroup
NP_BIND     17     24       ATP (Potential)      
REGION (Optional)     19     24       Substrate binding (By similarity)   [ST]-x-x-[GN]-K-[ST]  
REGION (Optional)     42     45       Interaction with substrate tRNA (By similarity)   D-S-x-x  
REGION (Optional)     166     170       Interaction with substrate tRNA (By similarity)   Q-R-x-x-R  
REGION (Optional)     247     252       Interaction with substrate tRNA (By similarity)   R-C-V-G-Y-R  
REGION (Optional)     280     287       Interaction with substrate tRNA (By similarity)   K-R-Q-I-T-W-L-R  
SITE (Optional)     108     108       Interaction with substrate tRNA (By similarity)   [TS]  
SITE (Optional)     130     130       Interaction with substrate tRNA (By similarity)   R  



Size range: 279-363 amino acids
Related UniRules: None
Template: P16384 (MIAA_ECOLI)
Scope: Bacteria
Fusion: Nter: None; Cter: None
Duplicate: in AZOPC, BACFN, BACFR, BACTN, BACV8, GEOBB, GEOLS, GEOSF, GEOUR, HAHCH, MYCMM, MYCUA, PARD8, PELCD, PELPD, PORG3, PORGI, SHESH, SYNAS, TREDE
Plasmid encoded: in THERP
Comments: Possible wrong start in a number of cases

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