The importance of cache domains in α2δ proteins and the basis for their gabapentinoid selectivity

ABSTRACTIn this hybrid review, we have first collected and reviewed available information on the structure and function of the enigmatic cache domains in α2δ proteins. These are organized into two double cache (dCache_1) domains, and they are present in all α2δ proteins. We have also included new da...

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Main Authors: Karen M Page, Vadim M Gumerov, Shehrazade Dahimene, Igor B Zhulin, Annette C Dolphin
Format: Article
Language:English
Published: Taylor & Francis Group 2023-12-01
Series:Channels
Subjects:
Online Access:https://www.tandfonline.com/doi/10.1080/19336950.2023.2167563
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author Karen M Page
Vadim M Gumerov
Shehrazade Dahimene
Igor B Zhulin
Annette C Dolphin
author_facet Karen M Page
Vadim M Gumerov
Shehrazade Dahimene
Igor B Zhulin
Annette C Dolphin
author_sort Karen M Page
collection DOAJ
description ABSTRACTIn this hybrid review, we have first collected and reviewed available information on the structure and function of the enigmatic cache domains in α2δ proteins. These are organized into two double cache (dCache_1) domains, and they are present in all α2δ proteins. We have also included new data on the key function of these domains with respect to amino acid and gabapentinoid binding to the universal amino acid–binding pocket, which is present in α2δ-1 and α2δ-2. We have now identified the reason why α2δ-3 and α2δ-4 do not bind gabapentinoid drugs or amino acids with bulky side chains. In relation to this, we have determined that the bulky amino acids Tryptophan and Phenylalanine prevent gabapentin from inhibiting cell surface trafficking of α2δ-1. Together, these novel data shed further light on the importance of the cache domains in α2δ proteins.
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spelling doaj.art-29b85d8ff155416898076adb66684e7c2023-11-28T18:09:44ZengTaylor & Francis GroupChannels1933-69501933-69692023-12-0117110.1080/19336950.2023.2167563The importance of cache domains in α2δ proteins and the basis for their gabapentinoid selectivityKaren M Page0Vadim M Gumerov1Shehrazade Dahimene2Igor B Zhulin3Annette C Dolphin4Department of Neuroscience, Physiology and Pharmacology, University College London, London, UKDepartment of Microbiology and Translational Data Analytics Institute, The Ohio State University, Columbus, OH, USADepartment of Neuroscience, Physiology and Pharmacology, University College London, London, UKDepartment of Microbiology and Translational Data Analytics Institute, The Ohio State University, Columbus, OH, USADepartment of Neuroscience, Physiology and Pharmacology, University College London, London, UKABSTRACTIn this hybrid review, we have first collected and reviewed available information on the structure and function of the enigmatic cache domains in α2δ proteins. These are organized into two double cache (dCache_1) domains, and they are present in all α2δ proteins. We have also included new data on the key function of these domains with respect to amino acid and gabapentinoid binding to the universal amino acid–binding pocket, which is present in α2δ-1 and α2δ-2. We have now identified the reason why α2δ-3 and α2δ-4 do not bind gabapentinoid drugs or amino acids with bulky side chains. In relation to this, we have determined that the bulky amino acids Tryptophan and Phenylalanine prevent gabapentin from inhibiting cell surface trafficking of α2δ-1. Together, these novel data shed further light on the importance of the cache domains in α2δ proteins.https://www.tandfonline.com/doi/10.1080/19336950.2023.2167563Voltage-gated calcium channelgabapentinoidcache domainamino acidα2δ protein
spellingShingle Karen M Page
Vadim M Gumerov
Shehrazade Dahimene
Igor B Zhulin
Annette C Dolphin
The importance of cache domains in α2δ proteins and the basis for their gabapentinoid selectivity
Channels
Voltage-gated calcium channel
gabapentinoid
cache domain
amino acid
α2δ protein
title The importance of cache domains in α2δ proteins and the basis for their gabapentinoid selectivity
title_full The importance of cache domains in α2δ proteins and the basis for their gabapentinoid selectivity
title_fullStr The importance of cache domains in α2δ proteins and the basis for their gabapentinoid selectivity
title_full_unstemmed The importance of cache domains in α2δ proteins and the basis for their gabapentinoid selectivity
title_short The importance of cache domains in α2δ proteins and the basis for their gabapentinoid selectivity
title_sort importance of cache domains in α2δ proteins and the basis for their gabapentinoid selectivity
topic Voltage-gated calcium channel
gabapentinoid
cache domain
amino acid
α2δ protein
url https://www.tandfonline.com/doi/10.1080/19336950.2023.2167563
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