U24 from Roseolovirus Interacts Strongly with Nedd4 WW Domains

Overview

Journal Sci Rep

Specialty Science

Date 2017 Jan 5

PMID 28051106

Citations 8

Authors

Yurou Sang

Rui Zhang

Walter R P Scott

A Louise Creagh

Charles A Haynes

Suzana K Straus

Affiliations

Soon will be listed here.

Abstract

U24 is a protein found in both roseoloviruses Human Herpes Virus type 6 and 7 (HHV-6 and HHV-7), with an N-terminus that is rich in prolines (PY motif in both HHV-6A and 7; PxxP motif in HHV-6A). Previous work has shown that the interaction between U24 and WW domains is important for endocytic recycling of T-cell receptors, but a cognate ligand was never identified. In this contribution, data was obtained from pull-downs, ITC, NMR and molecular dynamics simulations to show that a specific interaction exists between U24 and Nedd4 WW domains. ITC experiments were also carried out for U24 from HHV-6A phosphorylated at Thr6 (pU24-6A) and a peptide containing the PY motif from Nogo-A, a protein implicated in both the initial inflammatory and the neurodegenerative phases of multiple sclerosis (MS). The results suggest that phosphorylation of U24 from HHV-6A may be crucial for its potential role in MS.

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