From Solution to the Gas Phase: Stepwise Dehydration and Kinetic Trapping of Substance P Reveals the Origin of Peptide Conformations

2013 ◽  
Vol 135 (51) ◽  
pp. 19147-19153 ◽  
Author(s):  
Joshua A. Silveira ◽  
Kyle L. Fort ◽  
DoYong Kim ◽  
Kelly A. Servage ◽  
Nicholas A. Pierson ◽  
...  
Keyword(s):  
Substance P ◽  
Gas Phase ◽  
Peptide Conformations ◽  
Kinetic Trapping

From Solution to the Gas Phase: Factors That Influence Kinetic Trapping of Substance P in the Gas Phase

2014 ◽  
Vol 118 (49) ◽  
pp. 14336-14344 ◽  
Author(s):  
Kyle L. Fort ◽  
Joshua A. Silveira ◽  
Nicholas A. Pierson ◽  
Kelly A. Servage ◽  
David E. Clemmer ◽  
...  
Keyword(s):  
Substance P ◽  
Gas Phase ◽  
Kinetic Trapping

scholarly journals Effective Discrimination of Gas-Phase Peptide Conformers using TIMS-ECD-ToF MS/MS

2021 ◽  
Author(s):  
Kevin Jeanne dit fouque ◽  
Malte Wellmann ◽  
Dennys Leyva ◽  
Miguel Santos-Fernandez ◽  
Yarixa Cintron Diaz ◽  
...  
Keyword(s):  
Substance P ◽  
Gas Phase ◽  
Ion Mobility ◽  
Structural Information ◽  
Angiotensin I ◽  
Tof Ms ◽  
Model Peptides

In the present work, four, well-studied, model peptides (e.g., substance P, bradykinin, angiotensin I and AT-Hook 3) were used to correlate structural information provided by ion mobility and ECD/CID fragmentation...

Kinetic trapping through coalescence and the formation of patterned Ag–Cu nanoparticles

Nanoscale ◽  
2016 ◽  
Vol 8 (18) ◽  
pp. 9780-9790 ◽  
Author(s):  
Panagiotis Grammatikopoulos ◽  
Joseph Kioseoglou ◽  
Antony Galea ◽  
Jerome Vernieres ◽  
Maria Benelmekki ◽  
...  
Keyword(s):  
Magnetron Sputtering ◽  
Gas Phase ◽  
Metallic Nanoparticles ◽  
Inert Gas ◽  
Cu Nanoparticles ◽  
Gas Cooling ◽  
Kinetic Trapping

In recent years, due to its inherent flexibility, magnetron-sputtering has been widely used to synthesise bi-metallic nanoparticles (NPs) via subsequent inert-gas cooling and gas-phase condensation of the sputtered atomic vapour.

scholarly journals Substance P in the Gas Phase: Conformational Changes and Dissociations Induced by Collisional Activation in a Drift Tube

2019 ◽  
Vol 30 (6) ◽  
pp. 932-945 ◽  
Author(s):  
Christopher R. Conant ◽  
Daniel R. Fuller ◽  
Zhichao Zhang ◽  
Daniel W. Woodall ◽  
David H. Russell ◽  
...  
Keyword(s):  
Substance P ◽  
Gas Phase ◽  
Conformational Changes ◽  
Drift Tube ◽  
Collisional Activation

Residual Gas Reactions in the Electron Microscope: I. Qualitative Observations on the Water Gas Reaction

1968 ◽  
Vol 26 ◽  
pp. 292-293
Author(s):  
Richard E. Hartman ◽  
Roberta S. Hartman ◽  
Peter L. Ramos
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
Gas Phase ◽  
Absolute Temperature ◽  
Residual Gas ◽  
Gas Reactions ◽  
Image Position ◽  
The Right ◽  
Water Gas ◽  
Thinning Rate

The action of water and the electron beam on organic specimens in the electron microscope results in the removal of oxidizable material (primarily hydrogen and carbon) by reactions similar to the water gas reaction .which has the form:The energy required to force the reaction to the right is supplied by the interaction of the electron beam with the specimen.The mass of water striking the specimen is given by:where u = gH2O/cm2 sec, PH2O = partial pressure of water in Torr, & T = absolute temperature of the gas phase. If it is assumed that mass is removed from the specimen by a reaction approximated by (1) and that the specimen is uniformly thinned by the reaction, then the thinning rate in A/ min iswhere x = thickness of the specimen in A, t = time in minutes, & E = efficiency (the fraction of the water striking the specimen which reacts with it).

Mast cell-nerve fiber interaction: Ultrastructural studies

1990 ◽  
Vol 48 (3) ◽  
pp. 428-429
Author(s):  
E.Y. Chi ◽  
M.L. Su ◽  
Y.T. Tien ◽  
W.R. Henderson
Keyword(s):  
Mast Cell ◽  
Mast Cells ◽  
Substance P ◽  
Nerve Fiber ◽  
Sensory Nerves ◽  
Ultrastructural Studies ◽  
Morphological Studies ◽  
Granulocyte Infiltration ◽  
Intracutaneous Injection ◽  
Recent Attention

Recent attention has been directed to the interaction of the nerve and immune systems. The neuropeptide substance P, a tachykinnin which is a neurotransmitter in the central and peripheral nervous systems produces tissue swelling, augemntation of intersitial fibrin deposition and leukocyte infiltration after intracutaneous injection. There is a direct correlation reported between the extent of mast cell degranulation at the sites of injection and the tissue swelling or granulocyte infiltration. It has previously been demonstrated that antidromic electrical stimulation of sensory nerves induces degranulation of cutaneous mast cells, cutaneous vasodilation and augmented vascular permeability. Morphological studies have documented a close anatiomical association between mast cells and nonmyelinated nerves, that contain substance P and other neuropeptides. However, the presence of mast cells within nerve fasicles has not been previously examined ultrastructurally. In this study, we examined ultrastructurally the distribution of mast cells in the nerve fiber bundles located in the muscular connective tissue of rat tongues (n=20).

Integration of Core-Edge Spectroscopy Methods for the Study of Polymers

1996 ◽  
Vol 54 ◽  
pp. 154-155
Author(s):  
E. G. Rightor
Keyword(s):  
Excited State ◽  
Polymer Blends ◽  
Gas Phase ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Electronic States ◽  
Core Electron ◽  
Bulk Solids ◽  
Development Application

Core edge spectroscopy methods are versatile tools for investigating a wide variety of materials. They can be used to probe the electronic states of materials in bulk solids, on surfaces, or in the gas phase. This family of methods involves promoting an inner shell (core) electron to an excited state and recording either the primary excitation or secondary decay of the excited state. The techniques are complimentary and have different strengths and limitations for studying challenging aspects of materials. The need to identify components in polymers or polymer blends at high spatial resolution has driven development, application, and integration of results from several of these methods.

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