CATH Classification

Domain Context

CATH Clusters

Superfamily PUA domain
Functional Family Probable tRNA pseudouridine synthase B

Enzyme Information

5.4.99.25
tRNA pseudouridine(55) synthase.
based on mapping to UniProt Q9V1A5
tRNA uridine(55) = tRNA pseudouridine(55).
-!- Pseudourine synthase TruB from Escherichia coli specifically modifies uridine(55) in tRNA molecules. -!- The bifunctional archaeal enzyme also catalyzes the pseudouridylation of uridine(54). -!- It is not known whether the enzyme from Escherichia coli can also act on position 54 in vitro, since this position is occupied in E.coli tRNAs by thymine.

UniProtKB Entries (1)

Q9V0E3
NOP10_PYRAB
Pyrococcus abyssi GE5
Ribosome biogenesis protein Nop10

PDB Structure

PDB 2AUS
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Crystal structure determination and site-directed mutagenesis of the Pyrococcus abyssi aCBF5-aNOP10 complex reveal crucial roles of the C-terminal domains of both proteins in H/ACA sRNP activity
Manival, X., Charron, C., Fourmann, J.B., Godard, F., Charpentier, B., Branlant, C.
Nucleic Acids Res.