Results 81 to 90 of about 2,487,706 (262)

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Membrane fusion of secretory vesicles and liposomes Two different types of fusion [PDF]

, 1981
Secretory vesicles isolated from adrenal medulla were found to fuse in vitro in response to incubation with Ca2+. Intervesicular fusion was detected by electron microscopy and was indicated by the appearance of twinned vesicles in freeze-fractured ...
Gratzl, M, Dahl, Gerhard, Dahl, G., Gratzl, Manfred, Dahl, G, Ekerdt, R., Ekerdt, R, Ekerdt, Roland   +7 more
core   +1 more source

Six-helix bundle completion in the distal C-terminal heptad repeat region of gp41 is required for efficient human immunodeficiency virus type 1 infection

Retrovirology, 2018
Background The native pre-fusion structure of gp120/gp41 complex of human immunodeficiency virus type 1 was recently revealed. In the model, the helices of gp41 (α6, α7, α8, and α9) form a four-helix collar underneath trimeric gp120.
Dehua Liu, Hongyun Wang, Mizuki Yamamoto, Jiping Song, Rui Zhang, Qingling Du, Yasushi Kawaguchi, Jun-ichiro Inoue, Zene Matsuda   +8 more
doaj   +1 more source

Prospecting the protein design landscape

FEBS Letters, EarlyView.
This review outlines the current state of various protein design approaches. We discuss the current possibilities enabled by recently released tools, highlight future avenues to pursue in protein design, and underscore the crucial role of key databases and resources for successful protein design workflows.
Jakob R. Riccabona, Katharina T. Stonig, Jens Meiler, Clara T. Schoeder, Monica L. Fernández‐Quintero   +4 more
wiley   +1 more source

Workshop at Data and Planning Center of NIFS in 2003 "Assesment of Fusion R&D" - The Critical Issues of Demonstration Fusion Reactor - [PDF]

, 2004
実証炉を構想しそれに至る課題を整理することは、核融合研究開発の現状を評価するうえで最も適切な作業のひとつと考えた。磁場閉じ込めと慣性閉じ込め核融合に共通な課題は経済性の改善である。また、磁場閉じ込めではトカマクもヘリカルも将来性のあるダイバータの開発は共通である。 経済性に関しては先進トカマクや高速点火方式のレーザ慣性核融合の提案が出てきている。さらにダイバータに関しては可動型や外置き型の研究が進められている。これらの要約は添付した。In order to asses the fusion ...
TAZIMA, Teruhiko, TAJIMA, Teruhiko, IGUCHI, Harukazu   +2 more
core  

The Membrane Steps of Bacterial Cell Wall Synthesis as Antibiotic Targets [PDF]

, 2016
Peptidoglycan is the major component of the cell envelope of virtually all bacteria. It has structural roles and acts as a selective sieve for molecules from the outer environment. Peptidoglycan synthesis is therefore one of the most important biogenesis
Eefjan Breukink, Liu, Yao, Breukink, Eefjan, Yao Liu, Sub Membrane Biochemistry & Biophysics, Membrane Biochemistry and Biophysics   +5 more
core   +1 more source

A context‐dependent modulatory role for eIF6 in acquired resistance to vemurafenib in melanoma

FEBS Letters, EarlyView.
Acquired resistance to vemurafenib upregulates the translation factor eIF6 in melanoma cells. Silencing eIF6 in resistant cells reduces proliferation and partially restores drug sensitivity, whereas its overexpression increases sensitivity across melanoma lines regardless of BRAF status, via modulation of mTOR, S6K, and MAPK signaling.
George Kyriakopoulos, Antonia Petropoulou, Alexandra Anastogianni, Angelina Bania, Vassilis Stamatakis, Argyris Alexiou, Chi‐Ping Day, Glenn Merlino, Katerina Grafanaki, Constantinos Stathopoulos   +9 more
wiley   +1 more source

Characterization of FER1L5, a novel dysferlin myoferlin related protein [PDF]

, 2009
The ferlins are mammalian homologues of the C-elegans sperm vesicle fusion protein FER-1 characterised by multiple C2 domains and a C-terminal anchor.
Ramachandran, Usha Kalyani
core  

Integration of a virus membrane protein into the lipid bilayer of target cells as a prerequisite for immune cytolysis [PDF]

, 1979
Structural requirements for membrane antigens on target cells to mediate immune cytolysis were studied in a model system with purified membrane proteins from Semliki Forest virus (SFV). These SFV spike proteins were isolated in the form of detergent- and
Schirrmacher, V., B Morein, V Schirrmacher, Koszinowski, Ulrich H., Morein, B., D Barz, Barz, D., U Koszinowski   +7 more
core   +1 more source