CATH Classification

Domain Context

CATH Clusters

Superfamily QueA-like
Functional Family Putative S-adenosylmethionine:tRNA ribosyltransferase-isomerase

Enzyme Information

2.4.99.17
S-adenosylmethionine:tRNA ribosyltransferase-isomerase.
based on mapping to UniProt Q9WZ44
S-adenosyl-L-methionine + 7-aminomethyl-7-carbaguanosine(34) in tRNA = L-methionine + adenine + epoxyqueuosine(34) in tRNA.
-!- The reaction is a combined transfer and isomerization of the ribose moiety of S-adenosyl-L-methionine to the modified guanosine base in the wobble position in tRNAs specific for Tyr, His, Asp or Asn. -!- It is part of the queuosine biosynthesis pathway.

UniProtKB Entries (1)

Q9WZ44
QUEA_THEMA
Thermotoga maritima MSB8
S-adenosylmethionine:tRNA ribosyltransferase-isomerase

PDB Structure

PDB 1VKY
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Crystal structure of S-adenosylmethionine:tRNA ribosyltransferase-isomerase (QueA) from Thermotoga maritima at 2.0 A resolution reveals a new fold.
Mathews, I., Schwarzenbacher, R., McMullan, D., Abdubek, P., Ambing, E., Axelrod, H., Biorac, T., Canaves, J.M., Chiu, H.J., Deacon, A.M., DiDonato, M., Elsliger, M.A., Godzik, A., Grittini, C., Grzechnik, S.K., Hale, J., Hampton, E., Han, G.W., Haugen, J., Hornsby, M., Jaroszewski, L., Klock, H.E., Koesema, E., Kreusch, A., Kuhn, P., Lesley, S.A., Levin, I., Miller, M.D., Moy, K., Nigoghossian, E., Ouyang, J., Paulsen, J., Quijano, K., Reyes, R., Spraggon, G., Stevens, R.C., van den Bedem, H., Velasquez, J., Vincent, J., White, A., Wolf, G., Xu, Q., Hodgson, K.O., Wooley, J., Wilson, I.A.
Proteins