Phosphorylation of PDE4A5 by MAPKAPK2 attenuates fibrin degradation via p75 signalling

Houslay, K.F., Fertig, B.A., Christian, F., Tibbo, A.J., Ling, J., Findlay, J.E., Houslay, M.D. and Baillie, G.S. (2019) Phosphorylation of PDE4A5 by MAPKAPK2 attenuates fibrin degradation via p75 signalling. Journal of Biochemistry, 166(1), pp. 97-106. (doi: 10.1093/jb/mvz016) (PMID:30859186) (PMCID:PMC6607969)

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Abstract

Phosphodiesterases (PDEs) shape local cAMP gradients to underpin the specificity of receptor function. Key to this process is the highly defined nature of the intra-cellular location of PDEs in the cell. PDE4A5 is a PDE isoform that specifically degrades cAMP and is known to associate with the p75 neurotrophin receptor (p75NTR) where it modulates cAMP signalling cascades that regulate extracellular matrix remodelling in the lungs. Here we map and validate novel protein–protein interaction sites that are important for formation of the PDE4A5–p75NTR complex and show, for the first time, that phosphorylation of PDE4A5 by MAPKAPK2 enhances PDE4A5 interaction with p75NTR and that this, in turn, serves to attenuate fibrin degradation.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Baillie, Professor George
Authors: Houslay, K.F., Fertig, B.A., Christian, F., Tibbo, A.J., Ling, J., Findlay, J.E., Houslay, M.D., and Baillie, G.S.
College/School:College of Medical Veterinary and Life Sciences
College of Medical Veterinary and Life Sciences > School of Cardiovascular & Metabolic Health
Journal Name:Journal of Biochemistry
Publisher:Oxford University Press
ISSN:0021-924X
ISSN (Online):1756-2651
Published Online:11 March 2019
Copyright Holders:Copyright © 2019 The Authors
First Published:First published in Journal of Biochemistry 166(1):97-106
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
438301Phosphodiesterase-4 isoforms - intracellular targeting, regulation and potential therapeutic targetsMiles HouslayMedical Research Council (MRC)G0600765RI NEUROSCIENCE & PSYCHOLOGY
588611cAMP phosphodiesterase-4: signalling complexes, regulation and potential therapeutic targets.George BaillieMedical Research Council (MRC)MR/J007412/1RI CARDIOVASCULAR & MEDICAL SCIENCES