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Articles 1 - 4 of 4
Full-Text Articles in Medical Biochemistry
Vam10p Defines A Sec18p-Independent Step Of Priming That Allows Yeast Vacuole Tethering, Masashi Kato, William Wickner
Vam10p Defines A Sec18p-Independent Step Of Priming That Allows Yeast Vacuole Tethering, Masashi Kato, William Wickner
Dartmouth Scholarship
YOR068c, termed VAM10 (altered vacuole morphology), lies within the VPS5 gene on the opposite DNA strand. VAM10 deletion causes vacuole fragmentation in vivo. The in vitro fusion of purified yeast vacuoles is stimulated by recombinant Vam10p and blocked by antibody to Vam10p. Vam10p acts early in the priming stage of fusion, independent of Sec18p. After priming, recombinant Vam10p will not stimulate fusion and anti-Vam10p antibodies will not inhibit; Vam10p provides a functional marker for this Sec18p-independent priming step. Pure Vam10p restores normal, Ypt7p-dependent tethering to vacuoles from a vam10Δ strain.
Copper Chelation Represses The Vascular Response To Injury, Lazar Mandinov, Anna Mandinova, Stanimir Kyurkchiev, Dobroslav Kyurkchiev, Ivan Kehayov, Vihren Kolev, Raffaella Soldi, Cinzia Bagala, Ebo D. De Muinck, Volkhard Lindner, Mark J. Post, Michael Simons
Copper Chelation Represses The Vascular Response To Injury, Lazar Mandinov, Anna Mandinova, Stanimir Kyurkchiev, Dobroslav Kyurkchiev, Ivan Kehayov, Vihren Kolev, Raffaella Soldi, Cinzia Bagala, Ebo D. De Muinck, Volkhard Lindner, Mark J. Post, Michael Simons
Dartmouth Scholarship
The induction of an acute inflammatory response followed by the release of polypeptide cytokines and growth factors from peripheral blood monocytes has been implicated in mediating the response to vascular injury. Because the Cu2+-binding proteins IL-1alpha and fibroblast growth factor 1 are exported into the extracellular compartment in a stress-dependent manner by using intracellular Cu2+ to facilitate the formation of S100A13 heterotetrameric complexes and these signal peptideless polypeptides have been implicated as regulators of vascular injury in vivo, we examined the ability of Cu2+ chelation to repress neointimal thickening in response to injury. We observed that the oral administration of …
Rhythmic Binding Of A White Collar-Containing Complex To The Frequency Promoter Is Inhibited By Frequency, Allan C. Froehlich, Jennifer J. Loros, Jay C. Dunlap
Rhythmic Binding Of A White Collar-Containing Complex To The Frequency Promoter Is Inhibited By Frequency, Allan C. Froehlich, Jennifer J. Loros, Jay C. Dunlap
Dartmouth Scholarship
The biological clock of Neurospora crassa includes interconnected transcriptional and translational feedback loops that cause both the transcript and protein encoded by the frequency gene (frq) to undergo the robust daily oscillations in abundance, which are essential for clock function. To understand better the mechanism generating rhythmic frq transcript, reporter constructs were used to show that the oscillation in frq message is transcriptionally regulated, and a single cis-acting element in the frq promoter, the Clock Box (C box), is both necessary and sufficient for this rhythmic transcription. Nuclear protein extracts used in binding assays revealed that a White Collar (WC)-1- …
Mammalian Erv46 Localizes To The Endoplasmic Reticulum–Golgi Intermediate Compartment And To Cis-Golgi Cisternae, Lelio Orci, Mariella Ravazzola, Gary J. Mack, Charles Barlowe, Stefan Otte
Mammalian Erv46 Localizes To The Endoplasmic Reticulum–Golgi Intermediate Compartment And To Cis-Golgi Cisternae, Lelio Orci, Mariella Ravazzola, Gary J. Mack, Charles Barlowe, Stefan Otte
Dartmouth Scholarship
Yeast endoplasmic reticulum (ER) vesicle protein Erv46p is a novel membrane protein involved in transport through the early secretory pathway. Investigation of mammalian Erv46 (mErv46) reveals that it is broadly expressed in tissues and protein-secreting cells. By immunofluorescence microscopy, mErv46 displays a crescent-shaped perinuclear staining pattern that is characteristic of the Golgi complex. Quantitative immunoelectron microscopy indicates that mErv46 is restricted to the cis face of the Golgi apparatus and to vesicular tubular structures between the transitional ER and cis-Golgi. Minor amounts of mErv46 reside in ER membranes and later Golgi cisternae. On Brefeldin A treatment, mErv46 redistributes to punctate …