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Updated: Feb 15, 2026

Crystallizing Membrane Proteins for Structure Determination using Lipidic Mesophases

Crystallizing Membrane Proteins for Structure Determination using Lipidic Mesophases

Published on: November 21, 2010

In situ structural studies of membrane protein megacomplexes.

Shan Sun¹, Sen-Fang Sui¹

¹State Key Laboratory of Membrane Biology, Beijing Frontier Research Center for Biological Structure, School of Life Sciences, Tsinghua University, Beijing 100084, China.

Current Opinion in Structural Biology

|February 13, 2026

Summary

In situ structural biology visualizes large membrane protein complexes within cells, overcoming limitations of in vitro methods. Recent advances provide high-resolution insights into these essential cellular machines.

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Area of Science:

Structural biology
Cellular biology
Biochemistry

Background:

Membrane protein complexes are crucial for cellular functions.
In vitro methods can disrupt native membrane environments and supramolecular organization.
In situ structural biology offers a way to study these complexes in their physiological context.

Purpose of the Study:

To review recent high-resolution in situ studies of membrane protein megacomplexes.
To highlight technical innovations in the field.
To discuss structural insights, challenges, and future opportunities.

Main Methods:

In situ structural biology techniques.
High-resolution imaging of macromolecular machines within native membranes.
Analysis of recent case studies on membrane protein megacomplexes.

Main Results:

Recent studies have achieved high or near-atomic resolution for in situ structures of large protein complexes.
Technological advancements have enabled visualization of these complexes in their native environment.
Key structural insights into membrane protein megacomplex organization have been gained.

Conclusions:

In situ structural biology is a powerful strategy for understanding membrane protein megacomplexes.
Continued technological innovation is crucial for advancing the field.
Further research is needed to address remaining challenges and explore new opportunities.