SGID Silkworm Genome Informatics Database
Gene
KWMTBOMO12332  Validated by peptides from experiments
Pre Gene Modal
BGIBMGA009182
Annotation
putative_NADH_dehydrogenase_[Danaus_plexippus]
Full name
Queuine tRNA-ribosyltransferase catalytic subunit 1      
Alternative Name
Guanine insertion enzyme
tRNA-guanine transglycosylase
Location in the cell
Mitochondrial   Reliability : 2.457
 

Sequence

CDS
ATGGGTGGTCACGGACATGGGCCCCCGTACACAGTGCCTCACTACTCCCAGTTTACTGTCAAAGGTATCCCACAACTGGATGAGCTTGAAAAGGCCTTAGCTGTTAAAGGACTTAAAGATCCATGGATCAGAAATGAGGCTTGGAGATATCACCCTGGATTTGGCACTCGCTGGCAGAGAGCCAGAAAATTCTTCTTTAGAGGATTTCCCATTGGACTGGGACTCACAGTAATCACAGTGGCTCTGGATAAATTTATGGGAGGGGGTGAACATGGGCATGGTCACGGGCACGAGGGAGAGCATTGA
Protein
MGGHGHGPPYTVPHYSQFTVKGIPQLDELEKALAVKGLKDPWIRNEAWRYHPGFGTRWQRARKFFFRGFPIGLGLTVITVALDKFMGGGEHGHGHGHEGEH

Summary

Description
Catalytic subunit of the queuine tRNA-ribosyltransferase (TGT) that catalyzes the base-exchange of a guanine (G) residue with queuine (Q) at position 34 (anticodon wobble position) in tRNAs with GU(N) anticodons (tRNA-Asp, -Asn, -His and -Tyr), resulting in the hypermodified nucleoside queuosine (7-(((4,5-cis-dihydroxy-2-cyclopenten-1-yl)amino)methyl)-7-deazaguanosine). Catalysis occurs through a double-displacement mechanism. The nucleophile active site attacks the C1' of nucleotide 34 to detach the guanine base from the RNA, forming a covalent enzyme-RNA intermediate. The proton acceptor active site deprotonates the incoming queuine, allowing a nucleophilic attack on the C1' of the ribose to form the product.
Catalyzes the base-exchange of a guanine (G) residue with the queuine precursor 7-aminomethyl-7-deazaguanine (PreQ1) at position 34 (anticodon wobble position) in tRNAs with GU(N) anticodons (tRNA-Asp, -Asn, -His and -Tyr). Catalysis occurs through a double-displacement mechanism. The nucleophile active site attacks the C1' of nucleotide 34 to detach the guanine base from the RNA, forming a covalent enzyme-RNA intermediate. The proton acceptor active site deprotonates the incoming PreQ1, allowing a nucleophilic attack on the C1' of the ribose to form the product. After dissociation, two additional enzymatic reactions on the tRNA convert PreQ1 to queuine (Q), resulting in the hypermodified nucleoside queuosine (7-(((4,5-cis-dihydroxy-2-cyclopenten-1-yl)amino)methyl)-7-deazaguanosine).
Catalytic Activity
7-aminomethyl-7-carbaguanine + guanosine(34) in tRNA = 7-aminomethyl-7-carbaguanosine(34) in tRNA + guanine
guanosine(34) in tRNA + queuine = guanine + queuosine(34) in tRNA
Cofactor
Zn(2+)
Subunit
Heterodimer of a catalytic subunit and an accessory subunit.
Similarity
Belongs to the queuine tRNA-ribosyltransferase family.
EC Number
2.4.2.29
EMBL
BABH01040444    RSAL01000415    RVE41825.1    AGBW02008387    OWR53522.1    GAIX01006095    + More
JAA86465.1    JTDY01004905    KOB67607.1    NWSH01004480    PCG65056.1    KQ460480    KPJ14341.1    KZ150386    PZC71064.1    KQ458842    KPJ04893.1    AK401571    BAM18193.1    GDQN01003482    JAT87572.1    JRES01001654    KNC21109.1    JXUM01050108    GAPW01006325    KQ561634    JAC07273.1    KXJ77935.1    CH477418    EAT41291.1    CH954179    EDV55483.1    KQS62305.1    GAMC01005571    JAC00985.1    CH916375    EDV98310.1    AY232018    CM000158    AAR10041.1    EDW91214.1    CH933808    EDW10471.1    KRG05273.1    GDHF01020460    GDHF01009510    JAI31854.1    JAI42804.1    CH480824    EDW56658.1    AE013599    BT031040    AAF46744.1    ABV53870.1    ABV53871.1    ABV82422.1    ACZ94512.1    ACZ94513.1    GBYB01010902    GBYB01010903    JAG80669.1    JAG80670.1    GAKP01000311    GAKP01000310    JAC58641.1    CM002911    KMY95603.1    KMY95604.1    CH902619    EDV37043.1    KPU76579.1    KK854009    PTY09232.1    ATLV01023929    KE525347    KFB49975.1    AXCN02001027    GAMD01003263    JAA98327.1    GGFK01004587    MBW37908.1    GGFL01003788    MBW67966.1    APCN01003304    AAAB01008986    EAA00203.3    AXCM01001727    GGFM01003694    MBW24445.1    CH963848    EDW73661.1    CH940648    EDW60267.1    KRF79330.1    GGFJ01010863    MBW60004.1    CCAG010005008    GDAI01001576    JAI16027.1    KK852570    KDR21146.1    APGK01035812    KB740928    KB631763    ENN77980.1    ERL85964.1    CM000071    EAL24951.1    KRT01722.1    KRT01723.1    KRT01724.1    CH479181    EDW31736.1    OUUW01000001    SPP73567.1    KQ971354    EFA07439.1    CP012524    ALC41354.1    CAQQ02026328    GFDG01001566    JAV17233.1    GFDG01001567    JAV17232.1    CVRI01000006    CRK88398.1    NEVH01007419    PNF35715.1    DS232308    EDS39547.1    GFDL01006773    JAV28272.1    GALX01005440    JAB63026.1    MWRG01002822    PRD32211.1    GFWV01010403    MAA35132.1    GGMR01008831    MBY21450.1    GFDF01010893    JAV03191.1    QCYY01001421    ROT78173.1    UFQS01000917    UFQT01000917    SSX07647.1    SSX27985.1    UFQT01003723    SSX35229.1    GDIP01106866    JAL96848.1    PYGN01000306    PSN48825.1    AJWK01018073    GDIQ01240918    JAK10807.1    AK417967    BAN21182.1    MTYJ01000020    OQV21885.1    KQ983203    KYQ46697.1    MRZV01000272    PIK53836.1    KK107324    QOIP01000006    EZA52527.1    RLU22031.1    KQ981193    KYN45198.1    KQ980575    KYN15469.1    AJVK01034701    GANO01003518    JAB56353.1    GEBQ01019573    JAT20404.1    GGLE01003340    MBY07466.1    GDIP01070321    JAM33394.1   
Pfam
PF08122   NDUF_B12        + More
PF15280   BORA_N
PF01702   TGT
Interpro
IPR012576   NDUFB3        + More
IPR023252   Aurora_borealis_protein       
IPR002616   tRNA_ribo_trans-like       
IPR036511   TGT-like_sf       
IPR004803   TGT       
SUPFAM
SSF51713   SSF51713       
Gene 3D
PDB
5XTI     E-value=7.10158e-09,     Score=137

Ontologies

Topology

Subcellular location
Cytoplasm  
Length:
101
Number of predicted TMHs:
1
Exp number of AAs in TMHs:
18.39408
Exp number, first 60 AAs:
0.00088
Total prob of N-in:
0.92590
inside
1  -  63
TMhelix
64  -  82
outside
83  -  101
 
 

Population Genetic Test Statistics

Pi
32.991531
Theta
23.965834
Tajima's D
1.342225
CLR
0.352429
CSRT
0.75661216939153
Interpretation
Uncertain
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