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Table 2 tRNA modification genes identified in E. coli and S. cerevisiae.

From: Transfer RNA modifications and genes for modifying enzymes in Arabidopsis thaliana

Modified nucleosides E. coli genes S. cerevisiae genes
D DusA, DusB, DusC Dus1, Dus2,Dus3,Dus4
Ψ TruA/HisT(Ψ38,39,40), TruB(Ψ55), RluA(Ψ32), TruD(Ψ13) Pus1(Ψ24,28,34,36), Pus3 (Ψ38,39), Pus4(Ψ55), Pus6(Ψ31), Pus7(Ψ13, Ψ35), Pus8(Ψ32), Pus9(Ψ32)
ncm5U   Sit4, Kti11-14, Elp1-6, Sap185, Sap190
m1A   Trm6, Trm61
m5C   Trm4
Cm TrmJ(Cm32) Trm7(Cm32)
m7G YggH Trm8, Trm82
m5U TrmA Trm2
I TadA Tad2, Tad3
Um TrmJ(Um32) Trm44(Um44)
m1I   Tad1, Trm5
mcm5U   Trm9, Sit4, Kti11-14, Elp1-6, Sap185, Sap190
Gm   Trm3(Gm18), Trm7(Gm34)
m1G TrmD Trm5, Trm10
m2G   Trm11, Trm112
ac4C TmcA TAN1
m22G   Trm1
mcm5s2U - Urm1, Uba4,Ncs2, NFS1
Am   Trm13(Am4, Cm4)
t6A   Sua5
m2A TrmG (genetic name, no sequence)  
m6t6A TsaA  
i6A MiaA MOD5
ms2io6A MiaA, MiaB, MiaE  
Y   Tyw1, Tyw2(Trm12), Tyw3, Tyw4
Ar(p)   Rit1
Q Tgt, QueC,YbaX, YgcM, YgcF, YqcD  
preQ QueF  
mnm5s2U MnmE, MnmC, MnmA/AsuE/TrmU  
mnm5se2U YbbB  
cmo5U CmoA, CmoB  
mcmo5U CmoA, CmoB  
k2C MesJ/TilS  
s2U TusA, TusB, TusC, TusD  
s4U ThiI  
s2C TtcA Ncs6/Tuc1