CATH Classification

Domain Context

CATH Clusters

Superfamily Ricin (A subunit), domain 1
Functional Family

Enzyme Information

3.2.2.22
rRNA N-glycosylase.
based on mapping to UniProt P28522
Endohydrolysis of the N-glycosidic bond at one specific adenosine on the 28S rRNA.
-!- Ricin A-chain and related toxins show this activity. -!- Naked rRNA is attacked more slowly than rRNA in intact ribosomes. -!- Naked rRNA from Escherichia coli is cleaved at a corresponding position.

UniProtKB Entries (1)

P28522
RIPX_MAIZE
Zea mays
Ribosome-inactivating protein

PDB Structure

PDB 2PQI
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Structure-function study of maize ribosome-inactivating protein: implications for the internal inactivation region and the sole glutamate in the active site.
Mak, A.N., Wong, Y.T., An, Y.J., Cha, S.S., Sze, K.H., Au, S.W., Wong, K.B., Shaw, P.C.
Nucleic Acids Res.