Results 71 to 80 of about 93,566 (291)

Haploinsufficiency of the Sec7 guanine nucleotide exchange factor gea1 impairs septation in fission yeast. [PDF]

open access: yesPLoS ONE, 2013
Membrane trafficking is essential to eukaryotic life and is controlled by a complex network of proteins that regulate movement of proteins and lipids between organelles.
Alan M Eckler   +13 more
doaj   +1 more source

Disrupting Lipid Raft Microdomains to Block Polyploid Giant Cancer Cell Budding and Enhance Radiotherapy Response

open access: yesAdvanced Science, EarlyView.
Radiation induces polyploid giant cancer cells (PGCCs) that regenerate tumors through virus‐like budding. This process depends on a SNCG–FLOT2–CHMP4B signaling axis functioning in lipid raft microdomains. Disrupting these domains using statins or anti‐PCSK9 antibodies blocks PGCC budding, suppresses tumor repopulation, and enhances radiotherapy ...
Zheng Deng   +20 more
wiley   +1 more source

Expression Pattern and Localization Dynamics of Guanine Nucleotide Exchange Factor RIC8 during Mouse Oogenesis. [PDF]

open access: yesPLoS ONE, 2015
Targeting of G proteins to the cell cortex and their activation is one of the triggers of both asymmetric and symmetric cell division. Resistance to inhibitors of cholinesterase 8 (RIC8), a guanine nucleotide exchange factor, activates a certain subgroup
Merly Saare   +8 more
doaj   +1 more source

Solving the Structure of eIF2 Bound to eIF2B Using Cryogenic Electron Microscopy [PDF]

open access: yes, 2019
Translation begins when initiation factor-2 (eIF2) delivers methionyl initiator tRNA (Met-tRNAi) to the ribosome. The exchange of GDP bound to eIF2 for GTP is a prerequisite to binding Met-tRNAi and is mediated by a second initiation factor, eIF2B ...
Kenner, Lillian
core  

Observation of coherent delocalized phonon-like modes in DNA under physiological conditions [PDF]

open access: yes, 2016
Underdamped terahertz-frequency delocalized phonon-like modes have long been suggested to play a role in the biological function of DNA. Such phonon modes involve the collective motion of many atoms and are prerequisite to understanding the molecular ...
Ellis, Elizabeth M.   +6 more
core   +1 more source

Phylogenomics, ecomorphological evolution, and historical biogeography in Deuterocohnia (Bromeliaceae: Pitcairnioideae)

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Species of Deuterocohnia (17 spp.) show extraordinary variation in elevation (0–3900 m a.s.l.) and growth forms, and many have narrow geographic distributions in the west‐central Andes and the Peru‐Chile coast. Previous research using few plastid and nuclear loci failed to produce well‐resolved or supported phylogenies.
Bing Li   +5 more
wiley   +1 more source

Guanine-nucleotide exchange on ribosome-bound elongation factor G initiates the translocation of tRNAs

open access: yesJournal of Biology, 2005
Background During the translation of mRNA into polypeptide, elongation factor G (EF-G) catalyzes the translocation of peptidyl-tRNA from the A site to the P site of the ribosome.
Ehrenberg Måns   +2 more
doaj   +1 more source

Myelination: all about Rac n roll. [PDF]

open access: yes, 2007
During the development of the peripheral nervous system, Schwann cells select individual axons from a nerve bundle and establish a one-to-one relationship through a process termed radial sorting. Recent findings identify the Rho family GTPase Rac1 as the
Chan, Jonah
core   +2 more sources

Noonan Syndrome Spectrum Disorders Predispose to Systemic Lupus Erythematosus: Case Report and Critical Review of the Literature

open access: yesAmerican Journal of Medical Genetics Part A, EarlyView.
ABSTRACT RASopathies are clinically overlapping neurodevelopmental syndromes resulting from germline mutations in genes involved in the rat sarcoma/mitogen‐activated protein kinases (RAS/MAPK) pathway. Historically, RASopathies have been described by clinical phenotypes, such as Noonan syndrome and Neurofibromatosis type I.
Anastasia‐Vasiliki Madenidou   +6 more
wiley   +1 more source

Identification of a novel actin-binding domain within the Rho guanine nucleotide exchange factor TEM4. [PDF]

open access: yesPLoS ONE, 2012
Spatio-temporal activation of Rho GTPases is essential for their function in a variety of biological processes and is achieved in part by regulating the localization of their activators, the Rho guanine nucleotide exchange factors (RhoGEFs).
Natalia Mitin   +2 more
doaj   +1 more source

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