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Structural and Functional Impact of Parkinson Disease-Associated Mutations in the E3 Ubiquitin Ligase Parkin
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2015 (Engelska)Ingår i: Human Mutation, ISSN 1059-7794, E-ISSN 1098-1004, Vol. 36, nr 8, s. 774-786Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Mutations in the PARKIN/PARK2 gene that result in loss-of-function of the encoded, neuroprotective E3 ubiquitin ligase Parkin cause recessive, familial early-onset Parkinson disease. As an increasing number of rare Parkin sequence variants with unclear pathogenicity are identified, structure-function analyses will be critical to determine their disease relevance. Depending on the specific amino acids affected, several distinct pathomechanisms can result in loss of Parkin function. These include disruption of overall Parkin folding, decreased solubility, and protein aggregation. However pathogenic effects can also result from misregulation of Parkin autoinhibition and of its enzymatic functions. In addition, interference of binding to coenzymes, substrates, and adaptor proteins can affect its catalytic activity too. Herein, we have performed a comprehensive structural and functional analysis of 21 PARK2 missense mutations distributed across the individual protein domains. Using this combined approach, we were able to pinpoint some of the pathogenic mechanisms of individual sequence variants. Similar analyses will be critical in gaining a complete understanding of the complex regulations and enzymatic functions of Parkin. These studies will not only highlight the important residues, but will also help to develop novel therapeutics aimed at activating and preserving an active, neuroprotective form of Parkin.

Ort, förlag, år, upplaga, sidor
2015. Vol. 36, nr 8, s. 774-786
Nyckelord [en]
PARK2, PINK1, Parkinson, EOPD, mitophagy, molecular dynamics
Nationell ämneskategori
Medicinsk genetik
Identifikatorer
URN: urn:nbn:se:uu:diva-260607DOI: 10.1002/humu.22808ISI: 000358376600007PubMedID: 25939424OAI: oai:DiVA.org:uu-260607DiVA, id: diva2:848318
Forskningsfinansiär
NIH (National Institute of Health), NS085070, NS072187eSSENCE - An eScience Collaboration
Anmärkning

Contract grant sponsors: NIH/NINDS (R01 #NS085070); the Michael J. Fox Foundation for Parkinson's Research and the Foundation for Mitochondrial Medicine; Mayo Clinic Foundation and the Center for Individualized Medicine; the Marriott Family Foundation; Gerstner Family Career Development Award; NIH/NINDS (P50 #NS072187); Uppsala University and eSSENCE (essenceofscience.se); Wenner-Gren Foundation.

Tillgänglig från: 2015-08-24 Skapad: 2015-08-21 Senast uppdaterad: 2018-01-11Bibliografiskt granskad

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Flores, Samuel C.

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