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Ludwig-Maximilians-Universität

4 ARTICLES PUBLISHED IN JoVE

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Immunology and Infection

Purification of Pathogen Vacuoles from Legionella-infected Phagocytes
Christine Hoffmann 1, Ivo Finsel 1, Hubert Hilbi 1
1Max von Pettenkofer-Institut, Ludwig-Maximilians-Universität

This article describes a method for the isolation and purification of intact Legionella-containing vacuoles (LCVs) from amoeba and macrophages. The two-step protocol comprises LCV enrichment by immuno-magnetic separation using an antibody against a bacterial LCV marker and further purification by density gradient centrifugation.

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Bioengineering

Investigating Receptor-ligand Systems of the Cellulosome with AFM-based Single-molecule Force Spectroscopy
Markus A. Jobst *1, Constantin Schoeler *1, Klara Malinowska 1, Michael A. Nash 1
1Lehrstuhl für Angewandte Physik and Center for Nanoscience, Ludwig-Maximilians-Universität

Cellulosomes are multienzyme complexes designed for digesting cellulose. AFM-based SMFS was used to study the mechanical properties and folding configuration of cellulosome-associated protein assemblies. We present a complete workflow for protein immobilization, data acquisition, and data analysis to study the interactions of individual receptor-ligand complexes involved in cellulosome assembly.

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Engineering

Analyzing the Movement of the Nauplius 'Artemia salina' by Optical Tracking of Plasmonic Nanoparticles
Silke R. Kirchner 1, Michael Fedoruk 1, Theobald Lohmüller 1, Jochen Feldmann 1
1Photonics and Optoelectronics Group, Ludwig-Maximilians-Universität

We use optical tracking of plasmonic nanoparticles to probe and characterize the frequency movements of aquatic organisms.

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JoVE Journal

Analysis of Arabidopsis thaliana Growth Behavior in Different Light Qualities
Bettina Bölter 1, Franka Seiler 1, Jürgen Soll 1
1Department Biologie I-Botanik, Ludwig-Maximilians-Universität

Here, we present a protocol for studying plant growth behavior and especially phenotypes in a reproducible manner. We show how to provide variable and at the same time stable light conditions. Proper analyses depend on sufficient sample numbers and valid statistical evaluations.

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