CATH Classification

Domain Context

CATH Clusters

Superfamily Ricin (A Subunit), domain 2
Functional Family Ricin

Enzyme Information

3.2.2.22
rRNA N-glycosylase.
based on mapping to UniProt P02879
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 (2)

P05387
RLA2_HUMAN
Homo sapiens
60S acidic ribosomal protein P2
P02879
RICI_RICCO
Ricinus communis
Ricin

PDB Structure

PDB 5GU4
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Crystal Structure of Ribosome-Inactivating Protein Ricin A Chain in Complex with the C-Terminal Peptide of the Ribosomal Stalk Protein P2
Shi, W.W., Tang, Y.S., Sze, S.Y., Zhu, Z.N., Wong, K.B., Shaw, P.C.
Toxins