Results 31 to 40 of about 1,846,603 (258)

Mutations of penicillin acylase residue B71 extend substrate specificity by decreasing steric constraints for substrate binding [PDF]

, 2003
Two mutant forms of penicillin acylase from Escherichia coli strains, selected using directed evolution for the ability to use glutaryl-L-leucine for growth [Forney, Wong and Ferber (1989) Appl. Environ. Microbiol.
Brannigan, J A, Forney, L J, Ladurner, A G, McVey, C E, Morillas, M, Virden, R   +5 more
core   +2 more sources

Insights into the renal pathophysiology in Hermansky‐Pudlak syndrome‐1 from urinary extracellular vesicle proteomics and a new mouse model

FEBS Letters, EarlyView.
Hermansky‐Pudlak syndrome type 1 (HPS‐1) is a rare, autosomal recessive disorder with poorly understood renal involvement. Urinary extracellular vesicle (uEV) proteomics and a novel Hps1 mouse model reveal mitochondrial abnormalities and lipid accumulation in HPS‐1 kidney proximal tubule cells. Serum ApoA1 correlates with kidney function in our patient
Dawn M. Maynard, Bernadette R. Gochuico, Hadass Pri Chen, Christopher K. E. Bleck, Patricia M. Zerfas, Wendy J. Introne, William A. Gahl, May C. V. Malicdan   +7 more
wiley   +1 more source

Close spatial arrangement of mutants favors and disfavors fixation [PDF]

, 2018
Cooperation is ubiquitous across all levels of biological systems ranging from microbial communities to human societies. It, however, seemingly contradicts the evolutionary theory, since cooperators are exploited by free-riders and thus are disfavored by natural selection.
arxiv   +1 more source

A Budding-Defective M2 Mutant Exhibits Reduced Membrane Interaction, Insensitivity To Cholesterol, And Perturbed Interdomain Coupling [PDF]

, 2017
Influenza A M2 is a membrane-associated protein with a C-terminal amphipathic helix that plays a cholesterol-dependent role in viral budding. An M2 mutant with alanine substitutions in the C-terminal amphipathic helix is deficient in viral scission. With
Feix, J. B., Herneisen, A. L., Howard, Kathleen P., Lorigan, G. A., McCarrick, R. M., Sahu, I. D.   +5 more
core   +2 more sources

Cytosolic‐enhanced dark Epac‐based FRET sensors allow for intracellular cAMP detection in live cells via FLIM

FEBS Letters, EarlyView.
We describe a novel set of Epac‐based FRET‐FLIM biosensors with improved fully cytosolic distribution, achieved without compromising the state‐of‐the‐art performance of our original designs, for detecting cAMP dynamics in real time in live cells with high precision and reliability.
Giulia Zanetti, Jeffrey B. Klarenbeek, Kees Jalink   +2 more
wiley   +1 more source

Structural symmetry in evolutionary games [PDF]

Journal of the Royal Society Interface vol. 12 no. 111, 20150420 (2015), 2015
In evolutionary game theory, an important measure of a mutant trait (strategy) is its ability to invade and take over an otherwise-monomorphic population. Typically, one quantifies the success of a mutant strategy via the probability that a randomly occurring mutant will fixate in the population.
arxiv   +1 more source

Transient disappearance of RAS mutant clones in plasma: A counterintuitive clinical use of EGFR inhibitors in RAS mutant metastatic colorectal cancer [PDF]

, 2019
Genomic studies performed through liquid biopsies widely elucidated the evolutionary trajectory of RAS mutant clones under the selective pressure of EGFR inhibitors in patients with wild type RAS primary colorectal tumors. Similarly, the disappearance of
Belardinilli, Francesca, Cortesi, Enrico, Gazzaniga, Paola, Gelibter, ALAIN JONATHAN, Giannini, Giuseppe, Gradilone, Angela, Loreni, Flavia, Mahdavia, Yasaman, Nicolazzo, Chiara, Raimondi, Cristina   +9 more
core   +1 more source

Diphthamide synthesis is linked to the eEF2‐client chaperone machinery

FEBS Letters, EarlyView.
The diphthamide modification of eukaryotic translation elongation factor 2 (eEF2) is important for accurate protein synthesis. We addressed the potential coordination of de novo eEF2 synthesis with simultaneous or subsequent diphthamide modification. Our work reveals that the co‐chaperones Hgh1 and Cpr7, which are known to support folding of nascent ...
Lars Kaduhr, Klaus Mayer, Raffael Schaffrath, Johannes Buchner, Ulrich Brinkmann   +4 more
wiley   +1 more source

The [2Fe‐2S] cluster of mitochondrial outer membrane protein mitoNEET has an O2‐regulated nitric oxide access tunnel

FEBS Letters, EarlyView.
The mitochondrial outer membrane iron–sulphur ([Fe‐S]) protein mitoNEET is a target of the type‐2 diabetes drug pioglitazone. Its unknown molecular function is linked to respiratory complex activity and mitochondrial function. We discovered that O2 protects the mitoNEET [2Fe‐2S] cluster against NO oxidation and desensitization towards reduction by H2S.
Thao Nghi Hoang, Meritxell Wu‐Lu, Alberto Collauto, Peter‐Leon Hagedoorn, Madalina Alexandru, Maike Henschel, Shahram Kordasti, Maria Andrea Mroginski, Maxie M. Roessler, Kourosh H. Ebrahimi   +9 more
wiley   +1 more source

Evolutionary dynamics and fixation probabilities in directed networks

, 2009
We investigate the evolutionary dynamics in directed and/or weighted networks. We study the fixation probability of a mutant in finite populations in stochastic voter-type dynamics for several update rules.
Masuda, Naoki, Ohtsuki, Hisashi
core   +1 more source