New penta-saccharide-bearing tripod amphiphiles for membrane protein structure studies
File(s)TPS_manuscript_accepted.pdf (2.45 MB)
Accepted version
Author(s)
Type
Journal Article
Abstract
Integral membrane proteins either alone or as complexes carry out a range of key cellular functions. Detergents are indispensable tools in the isolation of membrane proteins from biological membranes for downstream studies. Although a large number of techniques and tools, including a wide variety of detergents, are available, purification and structural characterization of many membrane proteins remain challenging. In the current study, a new class of tripod amphiphiles bearing two different penta-saccharide head groups, designated TPSs, were developed and evaluated for their ability to extract and stabilize a range of diverse membrane proteins. Variations in the structures of the detergent head and tail groups allowed us to prepare three sets of the novel agents with distinctive structures. Some TPSs (TPS-A8 and TPS-E7) were efficient at extracting two proteins in a functional state while others (TPS-E8 and TPS-E10L) conferred marked stability to all membrane proteins (and membrane protein complexes) tested here compared to a conventional detergent. Use of TPS-E10L led to clear visualization of a receptor-Gs complex using electron microscopy, indicating profound potential in membrane protein research.
Date Issued
2017-10-21
Date Acceptance
2017-09-06
Citation
The Analyst, 2017, 142 (20), pp.3889-3898
ISSN
0003-2654
Publisher
Royal Society of Chemistry
Start Page
3889
End Page
3898
Journal / Book Title
The Analyst
Volume
142
Issue
20
Copyright Statement
© The Royal Society of Chemistry 2017
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000412565700012&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Chemistry, Analytical
Chemistry
MUSCARINIC ACETYLCHOLINE-RECEPTOR
MALEIC ACID COPOLYMER
CRYSTAL-STRUCTURE
FACIAL AMPHIPHILES
MNG AMPHIPHILES
STABILIZATION
CRYSTALLIZATION
SOLUBILIZATION
DETERGENTS
INSIGHTS
Publication Status
Published
Date Publish Online
2017-09-07