54 Result(s)

Article

Journal Club

Kristina Beblo-Vranesevic, Wilhelm Palm, Khadija Aichane, Matthias Horn… in BIOspektrum (2021)

Article

Journal Club

Volkmar Braun, Heike Brötz-Oesterhelt, Johannes Sander, Jannis Anstatt… in BIOspektrum (2020)

Article

Journal Club

Bernhard Hube, Sascha Brunke, Christina Heil, Volkmar Braun, Alina Guse… in BIOspektrum (2019)

Article

Journal Club

Volkmar Braun, Jochen Graw, Wolfgang Buckel, Lennart Randau… in BIOspektrum (2019)

Article

Journal Club

Jochen Graw, Rebecca Halbach, Volkmar Braun, Lennart Randau, Johannes Sander… in BIOspektrum (2019)

Article

Journal Club

Johannes Sander, Roman Iwasaki, Volkmar Braun, Blagovesta Popova… in BIOspektrum (2019)

Chapter

Lipoproteins: Structure, Function, Biosynthesis

The Lpp lipoprotein of Escherichia coli is the first identified protein with a covalently linked . It is by its C-terminus to ( ) and inserts by the at the N-terminus into the . As the most abundant prote...

Volkmar Braun, Klaus Hantke in Bacterial Cell Walls and Membranes (2019)

Article

Versatile in vitro system to study translocation and functional integration of bacterial outer membrane proteins

Gram-negative bacteria use the type-V secretion pathway to expose proteins at their cell surface, many of which have virulence functions. Translocation of those proteins across the outer membrane occurs either...

Derrick Norell, Alexander Heuck, Thuy-Anh Tran-Thi… in Nature Communications (2014)

Article

Bakterielle proteintoxine: Waffen gegen konkurrenten

Bacteriocins are bacterial protein toxins that kill competitors for the same ecological niche. Bacterial toxins are enzymes or pore-forming proteins which are equipped with receptor binding and translocation d...

Volkmar Braun, Silke I. Patzer in BIOspektrum (2013)

Chapter

The Tricky Ways Bacteria Cope with Iron Limitation

Iron is an essential element for many key redox systems. It is difficult to acquire for cells under oxic conditions, since Fe³⁺ forms insoluble hydroxides. In the human host, iron is tightly bound to proteins. Ba...

Volkmar Braun, Klaus Hantke in Iron Uptake in Bacteria with Emphasis on E… (2013)

Article

Energy-coupled outer membrane transport proteins and regulatory proteins

FhuA and FecA are two examples of energy-coupled outer membrane import proteins of gram-negative bacteria. FhuA transports iron complexed by the siderophore ferrichrome and serves as a receptor for phages, a t...

Volkmar Braun, Franziska Endriß in BioMetals (2007)

Chapter

Acquisition of Iron by Bacteria

Bacteria have evolved multiple mechanisms to cope with the extreme iron limitations in their natural environments. Fe³⁺ forms insoluble hydroxy aquo complexes. The free Fe³⁺ concentration lies orders of m...

Volkmar Braun, Klaus Hantke in Molecular Microbiology of Heavy Metals (2007)

Article

Gene Regulation by Transmembrane Signaling

Studies of the ferric citrate transport genes in Escherichia coli K-12 have revealed a novel type of transcriptional regulation. The inducer, ferric citrate, binds to an outer membrane protein and must not be tra...

Volkmar Braun, Susanne Mahren, Annette Sauter in Biometals (2006)

Article

Occurrence and regulation of the ferric citrate transport system in Escherichia coli B, Klebsiella pneumoniae, Enterobacter aerogenes, and Photorhabdus luminescens

In Escherichia coli K-12, transcription of the ferric citrate transport genes fecABCDE is initiated by binding of diferric dicitrate to the outer membrane protein FecA which elicits a signaling cascade from the c...

Susanne Mahren, Heidrun Schnell, Volkmar Braun in Archives of Microbiology (2005)

Article

Gene Regulation by Transmembrane Signaling

Studies of the ferric citrate transport genes in Escherichia coli K-12 have revealed a novel type of transcriptional regulation. The inducer, ferric citrate, binds to an outer membrane protein and must not be tra...

Volkmar Braun, Susanne Mahren, Annette Sauter in Biometals (2005)

Article

Identification of Fur regulated genes in the bacterial fish pathogen Photobacterium damselae ssp. piscicida using the Fur titration assay

Bacteria have developed a series of iron-scavenging and transport systems. The expression of many of the iron utilization genes is tightly regulated by the Fe²⁺ loaded Fur repressor protein. In this study, the Fu...

Carlos R. Osorio, Manuel L. Lemos, Volkmar Braun in Biometals (2004)

Chapter

Iron Transport In Escherichia coli

Volkmar Braun, Michael Braun… in Genes and Proteins Underlying Microbial Ur… (2002)