Search Results - "Ramirez, Samuel A."

Principles that govern competition or co-existence in Rho-GTPase driven polarization by Chiou, Jian-Geng, Ramirez, Samuel A, Elston, Timothy C, Witelski, Thomas P, Schaeffer, David G, Lew, Daniel J

“…Rho-GTPases are master regulators of polarity establishment and cell morphology. Positive feedback enables concentration of Rho-GTPases into clusters at the…”
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Particle-based simulations of polarity establishment reveal stochastic promotion of Turing pattern formation by Pablo, Michael, Ramirez, Samuel A, Elston, Timothy C

“…Polarity establishment, the spontaneous generation of asymmetric molecular distributions, is a crucial component of many cellular functions. Saccharomyces…”
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Dendritic spine geometry can localize GTPase signaling in neurons by Ramirez, Samuel A, Raghavachari, Sridhar, Lew, Daniel J

“…Dendritic spines are the postsynaptic terminals of most excitatory synapses in the mammalian brain. Learning and memory are associated with long-lasting…”
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A novel stochastic simulation approach enables exploration of mechanisms for regulating polarity site movement by Ramirez, Samuel A, Pablo, Michael, Burk, Sean, Lew, Daniel J, Elston, Timothy C

“…Cells polarize their movement or growth toward external directional cues in many different contexts. For example, budding yeast cells grow toward potential…”
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Effect of the Organization of Rhodopsin on the Association between Transducin and a Photoactivated Receptor by Ramirez, Samuel A, Leidy, Chad

“…After photoactivation, rhodopsin (R), a G-protein-coupled receptor, rapidly activates multiple transducin G-proteins (G) in an initial amplification step of…”
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Design, Characterization, and Dynamic Simulation of the MAHI Open Exoskeleton Upper Limb Robot by Dunkelberger, Nathan, Berning, Jeffrey, Dix, Kevin J., Ramirez, Samuel A., O'Malley, Marcia K.

“…Stroke and spinal cord injury are becoming ever more prevalent in the United States. Recent research has shown that rehabilitation robots have the potential to…”
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A Model for Migratory B Cell Oscillations from Receptor Down-Regulation Induced by External Chemokine Fields by Chan, Cliburn, Billard, Matthew, Ramirez, Samuel A., Schmidl, Harald, Monson, Eric, Kepler, Thomas B.

“…A long-standing paradigm in B cell immunology is that effective somatic hypermutation and affinity maturation require cycling between the dark zone and light…”
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Monte Carlo Study of the Association Rate Between Transducin and Photoactivated Rhodopsin at Disc Membranes by Ramirez, Samuel A., Leidy, Chad

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A Novel Stochastic Simulation Approach Enables Exploration of Mechanisms to Regulate Polarization Dynamics by Ramirez, Samuel A., Pablo, Michael, Burk, Sean, Lew, Daniel J., Elston, Timothy C.

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How does the State of Aggregation of Rhodopsin in Retinal Discs Influence the Variability of its Activated Life Time? by Ramirez, Samuel A., Leidy, Chad

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Ribosomal gene localization and distribution (arrangement) within the nucleolar organizer region of Zea mays [maize] by Ramirez, Samuel A, Sinclair, John H

“…Cytogenetic and molecular hybridization techniques were used to examine the arrangement of rRNA genes at the nucleolar organizer region (NOR) of maize. TB-6a…”
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Intraspecific variation of ribosomal gene redundancy in Zea mays [maize] by Ramirez, Samuel A, Sinclair, John H

“…Ribosomal genes in eukaryotes are highly redundant. Considerable variation in the level of redundancy among species, especially in higher plants, has been…”
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