scholarly journals Catalytic mechanisms of glutamine synthetase enzymes. Studies with analogs of possible intermediates and transition states.

1976 ◽  
Vol 251 (23) ◽  
pp. 7530-7538
Author(s):  
F C Wedler ◽  
B R Horn
Keyword(s):  
Glutamine Synthetase ◽  
Transition States ◽  
Catalytic Mechanisms

Investigation of intermediates and transition states in the catalytic mechanisms of active site substituted cobalt(II), nickel(II), zinc,(II), and cadmium(II) horse liver alcohol dehydrogenases

Biochemistry ◽  
1982 ◽  
Vol 21 (2) ◽  
pp. 354-363 ◽  
Author(s):  
Michael F. Dunn ◽  
Helmut Dietrich ◽  
Alastair K. H. MacGibbon ◽  
Steven C. Koerber ◽  
Michael Zeppezauer
Keyword(s):  
Active Site ◽  
Transition States ◽  
Alcohol Dehydrogenases ◽  
Horse Liver ◽  
Catalytic Mechanisms

Evaluation of single-electron movies of glutamine synthetase molecules

1983 ◽  
Vol 41 ◽  
pp. 280-281
Author(s):  
W. Kunath ◽  
E. Zeitler ◽  
M. Kessel
Keyword(s):  
Electron Microscope ◽  
Glutamine Synthetase ◽  
Electron Irradiation ◽  
Structural Damage ◽  
Structural Changes ◽  
Single Electron ◽  
Continuous Series ◽  
Digital Recording ◽  
Recording Device ◽  
Low Exposure

The features of digital recording of a continuous series (movie) of singleelectron TV frames are reported. The technique is used to investigate structural changes in negatively stained glutamine synthetase molecules (GS) during electron irradiation and, as an ultimate goal, to look for the molecules' “undamaged” structure, say, after a 1 e/Å2 dose.The TV frame of fig. la shows an image of 5 glutamine synthetase molecules exposed to 1/150 e/Å2. Every single electron is recorded as a unit signal in a 256 ×256 field. The extremely low exposure of a single TV frame as dictated by the single-electron recording device including the electron microscope requires accumulation of 150 TV frames into one frame (fig. lb) thus achieving a reasonable compromise between the conflicting aspects of exposure time per frame of 3 sec. vs. object drift of less than 1 Å, and exposure per frame of 1 e/Å2 vs. rate of structural damage.

Differential Expression and Assembly Mode of Glutamine Synthetase Isoen-zymes in Different Tissues and Organs of Maize

2017 ◽  
Vol 43 (9) ◽  
pp. 1410 ◽  
Author(s):  
Xiao-Chun WANG ◽  
Hao-Ran ZHANG ◽  
Yi-Hao WEI ◽  
Xi-Ting JIA ◽  
Ming-Xin GU ◽  
...  
Keyword(s):  
Glutamine Synthetase ◽  
Differential Expression ◽  
Different Tissues

Theoretical Computations on the Pyrolysis of Alkyl (dithio)acetates

2020 ◽  
Vol 17 (3) ◽  
pp. 224-233
Author(s):  
Xun Zhu ◽  
Chen Jian ◽  
Xiuqin Zhou ◽  
Abdullah M. Asiri ◽  
Khalid A. Alamry ◽  
...  
Keyword(s):  
Transition States ◽  
Membered Ring ◽  
Pyrolysis Process ◽  
Alkyl Esters ◽  
Charge Distributions ◽  
Theoretical Analyses

The pyrolysis of methyl alkyl esters I to III and dithioesters IV to VI were theoretically calculated. All possible pyrolysis paths were considered. Both esters and dithioesters presented three potential paths via six-, four- and five-membered ring transition states, respectively. The calculation processes were calculated using MP2/6-31G(d) set. In-depth theoretical analyses were also presented, including NBO related analyses, synchronicities, and charge distributions, to reveal the detailed pyrolysis process.

Disruption of Glutamate-Glutamine-GABA Cycle Significantly Impacts on Suicidal Behaviour: Survey of the Literature and Own Findings on Glutamine Synthetase.

2013 ◽  
Vol 12 (7) ◽  
pp. 900-913 ◽  
Author(s):  
Hans-Gert Bernstein ◽  
Anne Tausch ◽  
Rebecca Wagner ◽  
Johann Steiner ◽  
Patrick Seeleke ◽  
...  
Keyword(s):  
Glutamine Synthetase ◽  
Suicidal Behaviour
Sign in / Sign up

Export Citation Format

Share Document