Results 71 to 80 of about 746,971 (308)

Monomeric PcrA helicase processively unwinds plasmid lengths of DNA in the presence of the initiator protein RepD [PDF]

, 2013
The helicase PcrA unwinds DNA during asymmetric replication of plasmids, acting with an initiator protein, in our case RepD. Detailed kinetics of PcrA activity were measured using bulk solution and a single-molecule imaging technique to investigate the ...
Arbore, Arthur, Atkinson, Bird, Brune, Byrd, Byrd, Chao, Cheng, Christopher P. Toseland, Corrie, Dillingham, Dillingham, Dillingham, Dillingham, Dillingham, Fili, Fili, Gorbalenya, Greenstein, Gregory I. Mashanov, Iordanescu, Justin E. Molloy, Kunzelmann, Leatherbarrow, Lee, Levin, Liisa T. Chisty, Lohman, Lohman, Manosas, Mark S. Dillingham, Martin R. Webb, Mashanov, Natalia Fili, Niedziela-Majka, Noirot, Sellers, Singleton, Slatter, Soultanas, Soultanas, Soultanas, Subramanya, Thomas, Thomas, Toseland, Veaute, Velankar, Webb, Yamaguchi, Yang, Yarranton, Yeeles, Zhang   +54 more
core   +1 more source

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

FEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

Mechanisms of CFTR folding at the endoplasmic reticulum

Frontiers in Pharmacology, 2012
In the past decade much has been learned about how CFTR folds and misfolds as the etiologic cause of cystic fibrosis (CF). CFTR folding is complex and hierarchical, takes place in multiple cellular compartments and physical environments, and involves ...
Soo Jung Kim, William R Skach
doaj   +1 more source

Quantitative Proteomics and Differential Protein Abundance Analysis after Depletion of Putative mRNA Receptors in the ER Membrane of Human Cells Identifies Novel Aspects of mRNA Targeting to the ER

Molecules, 2021
In human cells, one-third of all polypeptides enter the secretory pathway at the endoplasmic reticulum (ER). The specificity and efficiency of this process are guaranteed by targeting of mRNAs and/or polypeptides to the ER membrane. Cytosolic SRP and its
Pratiti Bhadra, Stefan Schorr, Monika Lerner, Duy Nguyen, Johanna Dudek, Friedrich Förster, Volkhard Helms, Sven Lang, Richard Zimmermann   +8 more
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Life After Secretion—Yersinia enterocolitica Rapidly Toggles Effector Secretion and Can Resume Cell Division in Response to Changing External Conditions

Frontiers in Microbiology, 2019
Many pathogenic bacteria use the type III secretion system (T3SS) injectisome to manipulate host cells by injecting virulence-promoting effector proteins into the host cytosol.
Bailey Milne-Davies, Carlos Helbig, Stephan Wimmi, Dorothy W. C. Cheng, Nicole Paczia, Andreas Diepold   +5 more
doaj   +1 more source

Structural basis for substrate gripping and translocation by the ClpB AAA+ disaggregase. [PDF]

, 2019
Bacterial ClpB and yeast Hsp104 are homologous Hsp100 protein disaggregases that serve critical functions in proteostasis by solubilizing protein aggregates.
Bart, Stephen M, Castellano, Laura M, DiMaio, Frank, Gates, Stephanie N, Lin, JiaBei, Rizo, Alexandrea N, Shorter, James, Southworth, Daniel R, Tse, Eric   +8 more
core  

Macromolecular Mechanisms of Protein Translocation [PDF]

Protein & Peptide Letters, 2014
When macromolecules such as proteins are forced to translocate through a narrow pore, their conformational entropy is reduced, resulting in a free energy barrier. This free energy barrier is additionally modulated by protein-pore interactions. Furthermore, the driving force of the translocation such as the electrochemical potential gradient and ...
openaire   +2 more sources

Function‐driven design of a surrogate interleukin‐2 receptor ligand

FEBS Letters, EarlyView.
Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang, Zelin Cheng, Teng Li, Fulian Wang, Liangminghui Zhang, Xiuxiu He, Lili Liu, Wei Wang, Aibin Liang, Guang Yang   +9 more
wiley   +1 more source

The Roles of Endo-Lysosomes in Unconventional Protein Secretion

Cells, 2018
Protein secretion in general depends on signal sequence (also named leader sequence), a hydrophobic segment located at or close to the NH2-terminus of a secretory or membrane protein.
Juhyung Lee, Yihong Ye
doaj   +1 more source