Structure of the Wnt signaling enhancer LYPD6 and its interactions with the Wnt coreceptor LRP6

Ly6/urokinase‐type plasminogen activator receptor (uPAR) (LU) domain containing 6 (LYPD6) is a Wnt signaling enhancer that promotes phosphorylation of the Wnt coreceptor low density lipoprotein receptor‐related protein 6 (LRP6). It also binds the nicotinic acetylcholine receptor (nAChR). We report h...

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Main Authors: Zhao, Y, Ren, J, Lu, W, Harlos, K, Jones, EY
Format: Journal article
Published: Wiley 2018
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author Zhao, Y
Ren, J
Lu, W
Harlos, K
Jones, EY
author_facet Zhao, Y
Ren, J
Lu, W
Harlos, K
Jones, EY
author_sort Zhao, Y
collection OXFORD
description Ly6/urokinase‐type plasminogen activator receptor (uPAR) (LU) domain containing 6 (LYPD6) is a Wnt signaling enhancer that promotes phosphorylation of the Wnt coreceptor low density lipoprotein receptor‐related protein 6 (LRP6). It also binds the nicotinic acetylcholine receptor (nAChR). We report here the 1.25 Å resolution structure of the LYPD6 extracellular LU domain and map its interaction with LRP6 by mutagenesis and surface plasmon resonance. The LYPD6LU structure reveals a ‘trifingered protein domain’ fold with the middle fingertip bearing an ‘NxI’ motif, a tripeptide motif associated with LRP5/6 binding by Wnt inhibitors. Of the Ly6 protein family members, only LYPD6 has an NxI motif. Since mutations in the LYPD6 NxI motif abolish or severely reduce interaction with LRP6, our results indicate its key role in the interaction of LYPD6 with LRP6.
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spelling oxford-uuid:379c771d-9622-481f-a22f-2758190057592022-03-26T13:45:05ZStructure of the Wnt signaling enhancer LYPD6 and its interactions with the Wnt coreceptor LRP6Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:379c771d-9622-481f-a22f-275819005759Symplectic Elements at OxfordWiley2018Zhao, YRen, JLu, WHarlos, KJones, EYLy6/urokinase‐type plasminogen activator receptor (uPAR) (LU) domain containing 6 (LYPD6) is a Wnt signaling enhancer that promotes phosphorylation of the Wnt coreceptor low density lipoprotein receptor‐related protein 6 (LRP6). It also binds the nicotinic acetylcholine receptor (nAChR). We report here the 1.25 Å resolution structure of the LYPD6 extracellular LU domain and map its interaction with LRP6 by mutagenesis and surface plasmon resonance. The LYPD6LU structure reveals a ‘trifingered protein domain’ fold with the middle fingertip bearing an ‘NxI’ motif, a tripeptide motif associated with LRP5/6 binding by Wnt inhibitors. Of the Ly6 protein family members, only LYPD6 has an NxI motif. Since mutations in the LYPD6 NxI motif abolish or severely reduce interaction with LRP6, our results indicate its key role in the interaction of LYPD6 with LRP6.
spellingShingle Zhao, Y
Ren, J
Lu, W
Harlos, K
Jones, EY
Structure of the Wnt signaling enhancer LYPD6 and its interactions with the Wnt coreceptor LRP6
title Structure of the Wnt signaling enhancer LYPD6 and its interactions with the Wnt coreceptor LRP6
title_full Structure of the Wnt signaling enhancer LYPD6 and its interactions with the Wnt coreceptor LRP6
title_fullStr Structure of the Wnt signaling enhancer LYPD6 and its interactions with the Wnt coreceptor LRP6
title_full_unstemmed Structure of the Wnt signaling enhancer LYPD6 and its interactions with the Wnt coreceptor LRP6
title_short Structure of the Wnt signaling enhancer LYPD6 and its interactions with the Wnt coreceptor LRP6
title_sort structure of the wnt signaling enhancer lypd6 and its interactions with the wnt coreceptor lrp6
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AT harlosk structureofthewntsignalingenhancerlypd6anditsinteractionswiththewntcoreceptorlrp6
AT jonesey structureofthewntsignalingenhancerlypd6anditsinteractionswiththewntcoreceptorlrp6