F. Ulrich Hartl

Protein abundance profiling of the Escherichia coli cytosol (2008)

Ishihama, Yasushi, Schmidt, Thorsten, Rappsilber, Juri, Mann, Matthias, Hartl, F Ulrich, Kerner, Michael J, ...

Abstract Background Knowledge about the abundance of molecular components is an important prerequisite for building quantitative predictive models of cellular behavior. Proteins are central...

Ligand discrimination by TPR domains. Relevance and selectivity of EEVD-recognition in Hsp70·Hop·Hsp90 complexes (2002)

Brinker,Achim, Scheufler,Clemens, Von Der Mülbe,Florian, Fleckenstein,Burkhard, Herrmann,Christian, Jung,Günther, ...

Protein-protein interaction modules containing so-called tetratricopeptide repeats (TPRs) mediate the assembly of Hsp70/Hsp90 multi-chaperone complexes. The TPR1 and TPR2A domains of the Hsp70/Hsp90...

Ligand discrimination by TPR domains. Relevance and selectivity of EEVD-recognition in Hsp70·Hop·Hsp90 complexes (2002)

Brinker, Achim, Scheufler, Clemens, Von Der Mülbe, Florian, Fleckenstein, Burkhard, Herrmann, Christian, Jung, Günther, ...

Protein-protein interaction modules containing so-called tetratricopeptide repeats (TPRs) mediate the assembly of Hsp70/Hsp90 multi-chaperone complexes. The TPR1 and TPR2A domains of the Hsp70/Hsp90...

Induction of cellular immunity by immunization with novel hybrid peptides complexed to heat shock protein 70

Moroi, Yoichi, Mayhew, Mark, Trcka, Jiri, Hoe, Mee H., Takechi, Yoshizumi, Hartl, F. Ulrich, ...

Heat shock proteins 70 (hsp70) derived from tissues and cells can elicit cytotoxic T lymphocyte (CTL) responses against peptides bound to hsp70. However, peptides can markedly differ in their...

Hsp70 and Hsp40 chaperones can inhibit self-assembly of polyglutamine proteins into amyloid-like fibrils

Muchowski, Paul J., Schaffar, Gregor, Sittler, Annie, Wanker, Erich E., Hayer-Hartl, Manajit K., Hartl, F. Ulrich

The deposition of protein aggregates in neurons is a hallmark of neurodegenerative diseases caused by polyglutamine (polyQ) proteins. We analyzed the effects of the heat shock protein (Hsp) 70...

Observation of the noncovalent assembly and disassembly pathways of the chaperone complex MtGimC by mass spectrometry

Fändrich, Marcus, Tito, Mark A., Leroux, Michel R., Rostom, Adam A., Hartl, F. Ulrich, Dobson, Christopher M., ...

We have analyzed a newly described archaeal GimC/prefoldin homologue, termed MtGimC, by using nanoflow electrospray coupled with time-of-flight MS. The molecular weight of the complex from...

Mass spectrometry of ribosomes and ribosomal subunits

Benjamin, Dennis R., Robinson, Carol V., Hendrick, Joseph P., Hartl, F. Ulrich, Dobson, Christopher M.

Nanoflow electrospray ionization has been used to introduce intact Escherichia coli ribosomes into the ion source of a mass spectrometer. Mass spectra of remarkable quality result from a partial, but...

Detection and selective dissociation of intact ribosomes in a mass spectrometer

Rostom, Adam A., Fucini, Paola, Benjamin, Dennis R., Juenemann, Ralf, Nierhaus, Knud H., Hartl, F. Ulrich, ...

Intact Escherichia coli ribosomes have been projected into the gas phase of a mass spectrometer by means of nanoflow electrospray techniques. Species with mass/charge ratios in excess of 20,000 were...

Molecular chaperones as modulators of polyglutamine protein aggregation and toxicity

Sakahira, Hideki, Breuer, Peter, Hayer-Hartl, Manajit K., Hartl, F. Ulrich

The formation of insoluble protein aggregates in neurons is a hallmark of neurodegenerative diseases caused by proteins with expanded polyglutamine (polyQ) repeats. However, the mechanistic...

Chaperones increase association of tau protein with microtubules

Dou, Fei, Netzer, William J., Tanemura, Kentaro, Li, Feng, Hartl, F. Ulrich, Takashima, Akihiko, ...

Molecular chaperones and their functions in protein folding have been implicated in several neurodegenerative diseases, including Parkinson's disease and Huntington's disease, which are characterized...

Cofactor Tpr2 combines two TPR domains and a J domain to regulate the Hsp70/Hsp90 chaperone system

Brychzy, Alexander, Rein, Theo, Winklhofer, Konstanze F., Hartl, F.Ulrich, Young, Jason C., Obermann, Wolfgang M.J.

In the eukaryotic cytosol, Hsp70 and Hsp90 cooperate with various co-chaperone proteins in the folding of a growing set of substrates, including the glucocorticoid receptor (GR). Here, we analyse the...

TRiC/CCT cooperates with different upstream chaperones in the folding of distinct protein classes

Siegers, Katja, Bölter, Bettina, Schwarz, Juliane P., Böttcher, Ulrike M.K., Guha, Suranjana, Hartl, F.Ulrich

The role in protein folding of the eukaryotic chaperonin TRiC/CCT is only partially understood. Here, we show that a group of WD40 β-propeller proteins in the yeast cytosol interact transiently with...

Polypeptide release by Hsp90 involves ATP hydrolysis and is enhanced by the co-chaperone p23

Young, Jason C., Hartl, F.Ulrich

The molecular chaperone Hsp90 binds and hydrolyses ATP, but how this ATPase activity regulates the interaction of Hsp90 with a polypeptide substrate is not yet understood. Using the glucocorticoid...

Systematic Identification of Antiprion Drugs by High-Throughput Screening Based on Scanning for Intensely Fluorescent Targets

Bertsch, Uwe, Winklhofer, Konstanze F., Hirschberger, Thomas, Bieschke, Jan, Weber, Petra, Hartl, F. Ulrich, ...

Conformational changes and aggregation of specific proteins are hallmarks of a number of diseases, like Alzheimer's disease, Parkinson's disease, and prion diseases. In the case of prion diseases,...

In vivo analysis of the overlapping functions of DnaK and trigger factor

Genevaux, Pierre, Keppel, France, Schwager, Françoise, Langendijk-Genevaux, Petra S, Hartl, F Ulrich, Georgopoulos, Costa

Trigger factor (TF) is a ribosome-bound protein that combines catalysis of peptidyl-prolyl isomerization and chaperone-like activities in Escherichia coli. TF was shown to cooperate with the DnaK...

Induction of cellular immunity by immunization with novel hybrid peptides complexed to heat shock protein 70

Moroi, Yoichi, Mayhew, Mark, Trcka, Jiri, Hoe, Mee H., Takechi, Yoshizumi, Hartl, F. Ulrich, ...

Heat shock proteins 70 (hsp70) derived from tissues and cells can elicit cytotoxic T lymphocyte (CTL) responses against peptides bound to hsp70. However, peptides can markedly differ in their...

Hsp70 and Hsp40 chaperones can inhibit self-assembly of polyglutamine proteins into amyloid-like fibrils

Muchowski, Paul J., Schaffar, Gregor, Sittler, Annie, Wanker, Erich E., Hayer-Hartl, Manajit K., Hartl, F. Ulrich

The deposition of protein aggregates in neurons is a hallmark of neurodegenerative diseases caused by polyglutamine (polyQ) proteins. We analyzed the effects of the heat shock protein (Hsp) 70...

Observation of the noncovalent assembly and disassembly pathways of the chaperone complex MtGimC by mass spectrometry

Fändrich, Marcus, Tito, Mark A., Leroux, Michel R., Rostom, Adam A., Hartl, F. Ulrich, Dobson, Christopher M., ...

We have analyzed a newly described archaeal GimC/prefoldin homologue, termed MtGimC, by using nanoflow electrospray coupled with time-of-flight MS. The molecular weight of the complex from...

Mass spectrometry of ribosomes and ribosomal subunits

Benjamin, Dennis R., Robinson, Carol V., Hendrick, Joseph P., Hartl, F. Ulrich, Dobson, Christopher M.

Nanoflow electrospray ionization has been used to introduce intact Escherichia coli ribosomes into the ion source of a mass spectrometer. Mass spectra of remarkable quality result from a partial, but...

Detection and selective dissociation of intact ribosomes in a mass spectrometer

Rostom, Adam A., Fucini, Paola, Benjamin, Dennis R., Juenemann, Ralf, Nierhaus, Knud H., Hartl, F. Ulrich, ...

Intact Escherichia coli ribosomes have been projected into the gas phase of a mass spectrometer by means of nanoflow electrospray techniques. Species with mass/charge ratios in excess of 20,000 were...

Molecular chaperones as modulators of polyglutamine protein aggregation and toxicity

Sakahira, Hideki, Breuer, Peter, Hayer-Hartl, Manajit K., Hartl, F. Ulrich

The formation of insoluble protein aggregates in neurons is a hallmark of neurodegenerative diseases caused by proteins with expanded polyglutamine (polyQ) repeats. However, the mechanistic...

Chaperones increase association of tau protein with microtubules

Dou, Fei, Netzer, William J., Tanemura, Kentaro, Li, Feng, Hartl, F. Ulrich, Takashima, Akihiko, ...

Molecular chaperones and their functions in protein folding have been implicated in several neurodegenerative diseases, including Parkinson's disease and Huntington's disease, which are characterized...

Cofactor Tpr2 combines two TPR domains and a J domain to regulate the Hsp70/Hsp90 chaperone system

Brychzy, Alexander, Rein, Theo, Winklhofer, Konstanze F., Hartl, F.Ulrich, Young, Jason C., Obermann, Wolfgang M.J.

In the eukaryotic cytosol, Hsp70 and Hsp90 cooperate with various co-chaperone proteins in the folding of a growing set of substrates, including the glucocorticoid receptor (GR). Here, we analyse the...

TRiC/CCT cooperates with different upstream chaperones in the folding of distinct protein classes

Siegers, Katja, Bölter, Bettina, Schwarz, Juliane P., Böttcher, Ulrike M.K., Guha, Suranjana, Hartl, F.Ulrich

The role in protein folding of the eukaryotic chaperonin TRiC/CCT is only partially understood. Here, we show that a group of WD40 β-propeller proteins in the yeast cytosol interact transiently with...

Polypeptide release by Hsp90 involves ATP hydrolysis and is enhanced by the co-chaperone p23

Young, Jason C., Hartl, F.Ulrich

The molecular chaperone Hsp90 binds and hydrolyses ATP, but how this ATPase activity regulates the interaction of Hsp90 with a polypeptide substrate is not yet understood. Using the glucocorticoid...

Systematic Identification of Antiprion Drugs by High-Throughput Screening Based on Scanning for Intensely Fluorescent Targets

Bertsch, Uwe, Winklhofer, Konstanze F., Hirschberger, Thomas, Bieschke, Jan, Weber, Petra, Hartl, F. Ulrich, ...

Conformational changes and aggregation of specific proteins are hallmarks of a number of diseases, like Alzheimer's disease, Parkinson's disease, and prion diseases. In the case of prion diseases,...

In vivo analysis of the overlapping functions of DnaK and trigger factor

Genevaux, Pierre, Keppel, France, Schwager, Françoise, Langendijk-Genevaux, Petra S, Hartl, F Ulrich, Georgopoulos, Costa

Trigger factor (TF) is a ribosome-bound protein that combines catalysis of peptidyl-prolyl isomerization and chaperone-like activities in Escherichia coli. TF was shown to cooperate with the DnaK...

L25 functions as a conserved ribosomal docking site shared by nascent chain-associated complex and signal-recognition particle

Grallath, Silke, Schwarz, Juliane P, Böttcher, Ulrike M K, Bracher, Andreas, Hartl, F Ulrich, Siegers, Katja

The nascent chain-associated complex (NAC) is a dimeric protein complex of archaea and eukarya that interacts with ribosomes and translating polypeptide chains. We show that, in yeast, NAC and the...

Molecular chaperones of the Hsp110 family act as nucleotide exchange factors of Hsp70s

Dragovic, Zdravko, Broadley, Sarah A, Shomura, Yasuhito, Bracher, Andreas, Hartl, F Ulrich

Hsp70 molecular chaperones function in protein folding in a manner dependent on regulation by co-chaperones. Hsp40s increase the low intrinsic ATPase activity of Hsp70, and nucleotide exchange...

In Vivo Function of Hsp90 Is Dependent on ATP Binding and ATP Hydrolysis

Obermann, Wolfgang M.J., Sondermann, Holger, Russo, Alicia A., Pavletich, Nikola P., Hartl, F. Ulrich

Heat shock protein 90 (Hsp90), an abundant molecular chaperone in the eukaryotic cytosol, is involved in the folding of a set of cell regulatory proteins and in the re-folding of stress-denatured...

Hsp90: a specialized but essential protein-folding tool

Young, Jason C., Moarefi, Ismail, Hartl, F. Ulrich

Hsp90 is unique among molecular chaperones. The majority of its known substrates are signal transduction proteins, and recent work indicates that it uses a novel protein-folding strategy.