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Membrane Structure of Aquaporin Observed with Combined Experimental and Theoretical Sum Frequency Generation Spectroscopy. / Schmüser, L; Trefz, M; Roeters, S J et al.
I: Langmuir : the ACS journal of surfaces and colloids, Bind 37, Nr. 45, 11.2021, s. 13452-13459.Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review
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TY - JOUR
T1 - Membrane Structure of Aquaporin Observed with Combined Experimental and Theoretical Sum Frequency Generation Spectroscopy
AU - Schmüser, L
AU - Trefz, M
AU - Roeters, S J
AU - Beckner, W
AU - Pfaendtner, J
AU - Otzen, D
AU - Woutersen, S
AU - Bonn, M
AU - Schneider, D
AU - Weidner, T
PY - 2021/11
Y1 - 2021/11
N2 - High-resolution structural information on membrane proteins is essential for understanding cell biology and for the structure-based design of new medical drugs and drug delivery strategies. X-ray diffraction (XRD) can provide angstrom-level information about the structure of membrane proteins, yet for XRD experiments, proteins are removed from their native membrane environment, chemically stabilized, and crystallized, all of which can compromise the conformation. Here, we describe how a combination of surface-sensitive vibrational spectroscopy and molecular dynamics simulations can account for the native membrane environment. We observe the structure of a glycerol facilitator channel (GlpF), an aquaporin membrane channel finely tuned to selectively transport water and glycerol molecules across the membrane barrier. We find subtle but significant differences between the XRD structure and the inferred in situ structure of GlpF.
AB - High-resolution structural information on membrane proteins is essential for understanding cell biology and for the structure-based design of new medical drugs and drug delivery strategies. X-ray diffraction (XRD) can provide angstrom-level information about the structure of membrane proteins, yet for XRD experiments, proteins are removed from their native membrane environment, chemically stabilized, and crystallized, all of which can compromise the conformation. Here, we describe how a combination of surface-sensitive vibrational spectroscopy and molecular dynamics simulations can account for the native membrane environment. We observe the structure of a glycerol facilitator channel (GlpF), an aquaporin membrane channel finely tuned to selectively transport water and glycerol molecules across the membrane barrier. We find subtle but significant differences between the XRD structure and the inferred in situ structure of GlpF.
KW - BILAYER
KW - CHANNEL
KW - CRYSTAL
KW - GLYCEROL
KW - INTERFACE
KW - MOLECULAR-DYNAMICS
KW - ORIENTATION
KW - PEPTIDE
KW - PROTEIN
KW - VIBRATIONAL SPECTROSCOPY
UR - http://www.scopus.com/inward/record.url?scp=85118969452&partnerID=8YFLogxK
U2 - 10.1021/acs.langmuir.1c02206
DO - 10.1021/acs.langmuir.1c02206
M3 - Journal article
C2 - 34729987
VL - 37
SP - 13452
EP - 13459
JO - Langmuir
JF - Langmuir
SN - 0743-7463
IS - 45
ER -