CATH Classification

Domain Context

CATH Clusters

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

Enzyme Information

2.4.99.17
S-adenosylmethionine:tRNA ribosyltransferase-isomerase.
based on mapping to UniProt Q72JS5
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)

Q72JS5
QUEA_THET2
Thermus thermophilus HB27
S-adenosylmethionine:tRNA ribosyltransferase-isomerase

PDB Structure

PDB 1WDI
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Crystal Structure Of TT0907 From Thermus Thermophilus HB8
Idaka, M., Yagi, H., Murayama, K., Terada, T., Kuramitsu, S., Shirouzu, M., Yokoyama, S.
To be published