BibTex format
@article{Sadaf:2021:10.1016/j.actbio.2021.04.043,
author = {Sadaf, A and Kim, S and Bae, HE and Wang, H and Nygaard, A and Uegaki, Y and Du, Y and Munk, CF and Katsube, S and Sung, Lee H and Bae, J and Choi, CW and Choi, H-J and Byrne, B and Gellman, SH and Guan, L and Loland, CJ and Kobilka, BK and Im, W and Chae, PS},
doi = {10.1016/j.actbio.2021.04.043},
journal = {Acta Biomaterialia},
pages = {393--407},
title = {Conformationally flexible core-bearing detergents with a hydrophobic or hydrophilic pendant: effect of pendant polarity on detergent conformation and membrane protein stability},
url = {http://dx.doi.org/10.1016/j.actbio.2021.04.043},
volume = {128},
year = {2021}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - Membrane protein structures provide atomic level insight into essential biochemical processes and facilitate protein structure-based drug design. However, the inherent instability of these bio-macromolecules outside lipid bilayers hampers their structural and functional study. Detergent micelles can be used to solubilize and stabilize these membrane-inserted proteins in aqueous solution, thereby enabling their downstream characterizations. Membrane proteins encapsulated in detergent micelles tend to denature and aggregate over time, highlighting the need for development of new amphiphiles effective for protein solubility and stability. In this work, we present newly-designed maltoside detergents containing a pendant chain attached to a glycerol-decorated tris(hydroxymethyl)methane (THM) core, designated GTMs. One set of the GTMs has a hydrophobic pendant (ethyl chain; E-GTMs), and the other set has a hydrophilic pendant (methoxyethoxylmethyl chain; M-GTMs) placed in the hydrophobic-hydrophilic interfaces. The two sets of GTMs displayed profoundly different behaviors in terms of detergent self-assembly and protein stabilization efficacy. These behaviors mainly arise from the polarity difference between two pendants (ethyl and methoxyethoxylmethyl chains) that results in a large variation in detergent conformation between these sets of GTMs in aqueous media. The resulting high hydrophobic density in the detergent micelle interior is likely responsible for enhanced efficacy of the M-GTMs for protein stabilization compared to the E-GTMs and a gold standard detergent DDM. A representative GTM, M-GTM-O12, was more effective for protein stability than some recently developed detergents including LMNG. This is the first case study investigating the effect of pendant polarity on detergent geometry correlated with detergent efficacy for protein stabilization. STATEMENT OF SIGNIFICANCE: This study introduces new amphiphiles for use as biochemical tools in membrane protein stud
AU - Sadaf,A
AU - Kim,S
AU - Bae,HE
AU - Wang,H
AU - Nygaard,A
AU - Uegaki,Y
AU - Du,Y
AU - Munk,CF
AU - Katsube,S
AU - Sung,Lee H
AU - Bae,J
AU - Choi,CW
AU - Choi,H-J
AU - Byrne,B
AU - Gellman,SH
AU - Guan,L
AU - Loland,CJ
AU - Kobilka,BK
AU - Im,W
AU - Chae,PS
DO - 10.1016/j.actbio.2021.04.043
EP - 407
PY - 2021///
SN - 1742-7061
SP - 393
TI - Conformationally flexible core-bearing detergents with a hydrophobic or hydrophilic pendant: effect of pendant polarity on detergent conformation and membrane protein stability
T2 - Acta Biomaterialia
UR - http://dx.doi.org/10.1016/j.actbio.2021.04.043
UR - https://www.ncbi.nlm.nih.gov/pubmed/33933694
VL - 128
ER -