2010
DOI: 10.1074/jbc.m109.072405
|View full text |Cite
|
Sign up to set email alerts
|

Characterization and Structural Studies of the Plasmodium falciparum Ubiquitin and Nedd8 Hydrolase UCHL3

Abstract: Like their human hosts, Plasmodium falciparum parasites rely on the ubiquitin-proteasome system for survival. We previously identified PfUCHL3, a deubiquitinating enzyme, and here we characterize its activity and changes in active site architecture upon binding to ubiquitin. We find strong evidence that PfUCHL3 is essential to parasite survival. The crystal structures of both PfUCHL3 alone and in complex with the ubiquitinbased suicide substrate UbVME suggest a rather rigid active site crossover loop that like… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1

Citation Types

1
77
0

Year Published

2012
2012
2024
2024

Publication Types

Select...
8
1

Relationship

2
7

Authors

Journals

citations
Cited by 61 publications
(78 citation statements)
references
References 38 publications
1
77
0
Order By: Relevance
“…The UCH37 active site structure is highly conserved in the RPN13 CTD complex, and contacts to ubiquitin superimpose closely with those of the isolated Trichinella spiralis UCH37 UCH domain in complex with ubiquitin vinyl methyl ester (Morrow et al, 2013) and other UCH enzymes with ubiquitin aldehyde or ubiquitin vinyl methyl ester (Artavanis-Tsakonas et al, 2010; Boudreaux et al, 2010; Johnston et al, 1999; Misaghi et al, 2005) (Figure 1B). As expected, the catalytic cysteine side chain is turned away from the ubiquitin carboxylate in order to accommodate formation of the product complex.…”
Section: Resultsmentioning
confidence: 81%
“…The UCH37 active site structure is highly conserved in the RPN13 CTD complex, and contacts to ubiquitin superimpose closely with those of the isolated Trichinella spiralis UCH37 UCH domain in complex with ubiquitin vinyl methyl ester (Morrow et al, 2013) and other UCH enzymes with ubiquitin aldehyde or ubiquitin vinyl methyl ester (Artavanis-Tsakonas et al, 2010; Boudreaux et al, 2010; Johnston et al, 1999; Misaghi et al, 2005) (Figure 1B). As expected, the catalytic cysteine side chain is turned away from the ubiquitin carboxylate in order to accommodate formation of the product complex.…”
Section: Resultsmentioning
confidence: 81%
“…In the apo form of UCHL3, the closest homolog of UCH37, the loop is disordered but becomes ordered when ubiquitin is bound (48, 50) . The ubiquitin-bound structures of PfUCHL3 and the yeast ubiquitin hydrolase Yuh1 show an ordered crossover loop making contacts with side chains on the C-terminal tail of ubiquitin (73, 78) . In contrast, the structures of the TsUCH37-UbVME constructs present the only examples so far of a UCH DUB in which the crossover loop is still disordered even after ubiquitin is bound, indicating that the loop is flexible and does not contribute to ubiquitin binding.…”
Section: Resultsmentioning
confidence: 99%
“…PfUCHL3 is thought to be essential for parasite survival. Importantly, this DUB could be a possible target for selective drugs due to significant structural differences in ubiquitin binding between PfUCHL3 and its human homologue, as well as unique characteristic of PfUCHL3 to cleave Nedd8, which is absent from human UCHL3 [114]. PfUCH54 is another DUB in P. falciparum.…”
Section: Dubs In Infections With Pathogenic Fungi and Parasitesmentioning
confidence: 99%