scholarly journals A broad view of active residues that mediate catalysis for ornithine transcarbamoylase and glycinamide ribonucleotide transformylase

2018 ◽  
Author(s):  
Lisa Ngu
Keyword(s):  
Glycinamide Ribonucleotide Transformylase ◽  
Broad View ◽  
Ornithine Transcarbamoylase

A broad view of quake 'prediction'

Nature ◽  
2008 ◽  
Author(s):  
Philip Ball
Keyword(s):  
Broad View

Regulation of Water

2018 ◽  
Keyword(s):  
Water Policy ◽  
State Level ◽  
The State ◽  
Water Law ◽  
Water Regulation ◽  
Water Policies ◽  
Broad View ◽  
National Water

This chapter focuses on legal instruments that take a broad view of water regulation. There are, as yet, no framework statutory instruments at the state or Union level but drafts have been prepared and this chapter reproduces the latest draft National Water Framework Bill. The next section then moves on to water policies that have been adopted at the Union and state level for some years, highlighting here the National Water Policy, 2012. The last section focuses on an upcoming area of water law, inter-sectoral allocation of water, an issue that is not yet well covered in legal instruments. This section highlights some state-level instruments that seek to address the issue.

scholarly journals Regulation of arginine metabolism in Saccharomyces cerevisiae. Association of arginase and ornithine transcarbamoylase.

1986 ◽  
Vol 261 (27) ◽  
pp. 12814-12819 ◽  
Author(s):  
E Eisenstein ◽  
L T Duong ◽  
R L Ornberg ◽  
J C Osborne ◽  
P Hensley
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Arginine Metabolism ◽  
Ornithine Transcarbamoylase

A Broad View of Ecology

Ecology ◽  
1974 ◽  
Vol 55 (2) ◽  
pp. 458-459
Author(s):  
Peter W. Price
Keyword(s):  
Broad View

A Comparison of Two Algorithms for Electron-Density Map Improvement by Introduction of Atomicity: Skeletonization, and Map Sorting Followed by Refinement

1998 ◽  
Vol 54 (1) ◽  
pp. 81-85 ◽  
Author(s):  
F. M. D. Vellieux
Keyword(s):  
Electron Density ◽  
Initial Density ◽  
Acta Cryst ◽  
Density Maps ◽  
Resolution Electron ◽  
Crystallographic Symmetry ◽  
Density Map ◽  
Ornithine Transcarbamoylase ◽  
Electron Density Map ◽  
Pseudo Atom

A comparison has been made of two methods for electron-density map improvement by the introduction of atomicity, namely the iterative skeletonization procedure of the CCP4 program DM [Cowtan & Main (1993). Acta Cryst. D49, 148–157] and the pseudo-atom introduction followed by the refinement protocol in the program suite DEMON/ANGEL [Vellieux, Hunt, Roy & Read (1995). J. Appl. Cryst. 28, 347–351]. Tests carried out using the 3.0 Å resolution electron density resulting from iterative 12-fold non-crystallographic symmetry averaging and solvent flattening for the Pseudomonas aeruginosa ornithine transcarbamoylase [Villeret, Tricot, Stalon & Dideberg (1995). Proc. Natl Acad. Sci. USA, 92, 10762–10766] indicate that pseudo-atom introduction followed by refinement performs much better than iterative skeletonization: with the former method, a phase improvement of 15.3° is obtained with respect to the initial density modification phases. With iterative skeletonization a phase degradation of 0.4° is obtained. Consequently, the electron-density maps obtained using pseudo-atom phases or pseudo-atom phases combined with density-modification phases are much easier to interpret. These tests also show that for ornithine transcarbamoylase, where 12-fold non-crystallographic symmetry is present in the P1 crystals, G-function coupling leads to the simultaneous decrease of the conventional R factor and of the free R factor, a phenomenon which is not observed when non-crystallographic symmetry is absent from the crystal. The method is far less effective in such a case, and the results obtained suggest that the map sorting followed by refinement stage should be by-passed to obtain interpretable electron-density distributions.

Literacy in African American communities. J. L. Harris, A. G. Kamhi, and K. E. Pollock (Eds.). Mahwah, NJ: Erlbaum, 2001. Pp. 310.

2002 ◽  
Vol 23 (2) ◽  
pp. 301-304 ◽  
Author(s):  
Carolyn Temple Adger
Keyword(s):  
African American ◽  
Large Degree ◽  
African American Community ◽  
Linguistic Differences ◽  
Deep Knowledge ◽  
Broad View ◽  
University Programs ◽  
African American Communities

The beauty of edited volumes is their potential to achieve synergism in bringing together diverse work on a significant topic – not just to create a coherent collection of research. Literacy in African American communities succeeds on all fronts. In presenting a broad view of literacy-related practices, the volume evokes a variable African American community that is invisible (or at least hazy) in many schools. Without deep knowledge of the linguistic, cultural, historical, and political contexts for literacy in the community, the schools and university programs that prepare professionals cannot hope to overcome the deficit perspective of cultural and linguistic differences that still drives assessment and instruction to a large degree.

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