Title
Prediction of Functionally Important Phospho-Regulatory Events in Xenopus laevis Oocytes
Abstract
The African clawed frog Xenopus laevis is an important model organism for studies in developmental and cell biology, including cell-signaling. However, our knowledge of X. laevis protein post-translational modifications remains scarce. Here, we used a mass spectrometry-based approach to survey the phosphoproteome of this species, compiling a list of 2636 phosphosites. We used structural information and phosphoproteomic data for 13 other species in order to predict functionally important phospho-regulatory events. We found that the degree of conservation of phosphosites across species is predictive of sites with known molecular function. In addition, we predicted kinase-protein interactions for a set of cell-cycle kinases across all species. The degree of conservation of kinase-protein interactions was found to be predictive of functionally relevant regulatory interactions. Finally, using comparative protein structure models, we find that phosphosites within structured domains tend to be located at positions with high conformational flexibility. Our analysis suggests that a small class of phosphosites occurs in positions that have the potential to regulate protein conformation.
Year
DOI
Venue
2015
10.1371/journal.pcbi.1004362
PLOS COMPUTATIONAL BIOLOGY
Field
DocType
Volume
Phosphorylation,Cyclin-dependent kinase,Protein–protein interaction,African clawed frog,Biology,Proteomics,Xenopus,Bioinformatics,Model organism,Genetics,Protein structure
Journal
11
Issue
ISSN
Citations 
8
1553-7358
0
PageRank 
References 
Authors
0.34
8
9
Name
Order
Citations
PageRank
Jeffrey R. Johnson101.01
Silvia D. Santos200.34
Tasha Johnson300.34
Ursula Pieper434235.95
Marta Strumillo5181.23
Omar Wagih641.58
Andrej Sali700.34
Nevan Krogan8404.49
Pedro Beltrao9426.08