3CTK

Crystal structure of the type 1 RIP bouganin

DOI: 10.2210/pdb3CTK/pdb
Entry: 3CTK supersedes: 1WUC

Classification: HYDROLASE
Organism(s): Bougainvillea spectabilis
Mutation(s): No

Deposited: 2008-04-14 Released: 2008-05-27
Deposition Author(s): Fermani, S., Tosi, G., Falini, G., Ripamonti, A., Farini, V., Bolognesi, A., Polito, L.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.80 Å
R-Value Free: 0.202
R-Value Work: 0.176
R-Value Observed: 0.176

wwPDB Validation 3D Report Full Report

This is version 1.2 of the entry. See complete history.

Literature

Structure/function studies on two type 1 ribosome inactivating proteins: Bouganin and lychnin.

Fermani, S., Tosi, G., Farini, V., Polito, L., Falini, G., Ripamonti, A., Barbieri, L., Chambery, A., Bolognesi, A.

(2009) J Struct Biol 168: 278-287

PubMed: 19616098 Search on PubMed
DOI: 10.1016/j.jsb.2009.07.010
Primary Citation of Related Structures:
3CTK

PubMed Abstract:

The three-dimensional structures of two type 1 RIPs, bouganin and lychnin, has been solved. Their adenine polynucleotide glycosylase activity was also determined together with other known RIPs: dianthin 30, PAP-R, momordin I, ricin A chain and saporin-S6. Saporin-S6 releases the highest number of adenine molecules from rat ribosomes, and poly(A), while its efficiency is similar to dianthin 30, bouganin and PAP-R on herring sperm DNA. Measures of the protein synthesis inhibitory activity confirmed that saporin-S6 is the most active. The overall structure of bouganin and lychnin is similar to the other considered RIPs and the typical RIP fold is conserved. The superimpositioning of their C(alpha) atoms highlights some differences in the N-terminal and C-terminal domains. A detailed structural analysis indicates that the efficiency of saporin-S6 on various polynucleotides can be ascribed to a negative electrostatic surface potential at the active site and several exposed positively charged residues in the region around that site. These two conditions, not present at the same time in other examined RIPs, could guarantee an efficient interaction with the substrate and an efficient catalysis.

Related Citations:

In vitro anti-tumour activity of anti-CD80 and anti-CD86 immunotoxins containing type 1 ribosome-inactivating proteins
Bolognesi, A., Polito, L., Tazzari, P.L., Lemoli, R.L., Lubelli, C., Fogli, M., Boon, L., De Boer, M., Stirpe, F.
(2000) Br J Haematol 110: 351

New ribosome-inactivating proteins with polynucleotide:adenosine glycosidase and antiviral activities from Basella rubra l. and Bougainvillea spectabilis willd
Bolognesi, A., Polito, L., Olivieri, F., Valbonesi, P., Barbieri, L., Battelli, M.G., Carusi, M.V., Benvenuto, E., Del Vecchio Blanco, F., Di Maro, A., Di Loreto, M., Stirpe, F.
(1997) Planta 203: 422

Organizational Affiliation:

Department of Chemistry "G. Ciamician", Alma Mater Studiorum University of Bologna, Italy. simona.fermani@unibo.it

Macromolecules

Find similar proteins by:

(by identity cutoff) | Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
rRNA N-glycosidase	A	248	Bougainvillea spectabilis	Mutation(s): 0 EC: 3.2.2.22
Find proteins for Q8W4U4 (Bougainvillea spectabilis) Explore Q8W4U4 Go to UniProtKB: Q8W4U4
Protein Feature View Expand
Reference Sequence