scholarly journals Chirality and stereoisomerism of organic multicomponent crystals in the CSD

CrystEngComm ◽  
2020 ◽  
Vol 22 (43) ◽  
pp. 7380-7388
Author(s):  
Eline Grothe ◽  
Hugo Meekes ◽  
René de Gelder
Keyword(s):  
Residue Type

Multicomponent crystals in the CSD are classified into 49 subclasses based on chirality and residue type.

scholarly journals Entropy, Fluctuations, and Disordered Proteins

Entropy ◽  
2019 ◽  
Vol 21 (8) ◽  
pp. 764 ◽  
Author(s):  
Eshel Faraggi ◽  
A. Keith Dunker ◽  
Robert L. Jernigan ◽  
Andrzej Kloczkowski
Keyword(s):  
Protein Function ◽  
Accessible Surface Area ◽  
Disordered Proteins ◽  
Dihedral Angles ◽  
Residue Type ◽  
Sequence Structure ◽  
Multiple Sequence ◽  
Accessible Surface ◽  
Positive Correlations ◽  
Related Proteins

Entropy should directly reflect the extent of disorder in proteins. By clustering structurally related proteins and studying the multiple-sequence-alignment of the sequences of these clusters, we were able to link between sequence, structure, and disorder information. We introduced several parameters as measures of fluctuations at a given MSA site and used these as representative of the sequence and structure entropy at that site. In general, we found a tendency for negative correlations between disorder and structure, and significant positive correlations between disorder and the fluctuations in the system. We also found evidence for residue-type conservation for those residues proximate to potentially disordered sites. Mutation at the disorder site itself appear to be allowed. In addition, we found positive correlation for disorder and accessible surface area, validating that disordered residues occur in exposed regions of proteins. Finally, we also found that fluctuations in the dihedral angles at the original mutated residue and disorder are positively correlated while dihedral angle fluctuations in spatially proximal residues are negatively correlated with disorder. Our results seem to indicate permissible variability in the disordered site, but greater rigidity in the parts of the protein with which the disordered site interacts. This is another indication that disordered residues are involved in protein function.

A LIQUID CHROMATOGRAPHIC FLUORESCENCE TECHNIQUE FOR ESTIMATING CRUDE OIL IN WATER, SEDIMENT, AND BIOLOGICAL MATERIAL

1977 ◽  
Vol 1977 (1) ◽  
pp. 179-182 ◽  
Author(s):  
D. Howard Miles ◽  
Mary Jane Coign ◽  
Lewis R. Brown
Keyword(s):  
Crude Oil ◽  
Biological Material ◽  
Saudi Arabian ◽  
Rapid Analysis ◽  
Excitation Wavelength ◽  
Residue Type ◽  
Percent Error ◽  
Oil In Water ◽  
Liquid Chromatographic ◽  
Excellent Reproducibility

ABSTRACT This paper presents a method for the rapid detection of crude oil in the presence of large amounts of biological material. The method involves the use of high pressure liquid chromatography with chloroform as the solvent, an excitation wavelength of 403 nm, and an emission wavelength in the range of 418 nm. Of the five crude oils employed in this investigation, Saudi Arabian crude oil was the least responsive to the above technique and yet is still detectable in quantities of less than 1 µg. Reproducibility studies indicated that the percent error of repetitive injections of Saudi Arabian crude oil samples was 1.3%. Repetitive injections of spiked shrimp samples gave a percent error of 3.7%. This is excellent reproducibility for residue-type samples which undergo a number of manipulations during workup. Thus, this method is selective, sensitive, reproducible, and affords a rapid analysis.

Multiple and Single Binding Modes of Fragment-Like Kinase Inhibitors Revealed by Molecular Modeling, Residue Type-Selective Protonation, and Nuclear Overhauser Effects

2008 ◽  
Vol 51 (19) ◽  
pp. 6225-6229 ◽  
Author(s):  
Keith L. Constantine ◽  
Luciano Mueller ◽  
William J. Metzler ◽  
Patricia A. McDonnell ◽  
Gordon Todderud ◽  
...  
Keyword(s):  
Molecular Modeling ◽  
Kinase Inhibitors ◽  
Binding Modes ◽  
Residue Type ◽  
Nuclear Overhauser ◽  
Nuclear Overhauser Effects

Amino acid residue environments and predictions of residue type

2001 ◽  
Vol 25 (4) ◽  
pp. 411-422 ◽  
Author(s):  
Won Kim ◽  
W.John Wilbur
Keyword(s):  
Amino Acid ◽  
Amino Acid Residue ◽  
Residue Type

scholarly journals Effect of Microsphaeropsis sp. on the Production of Perithecia and Ascospores of Gibberella zeae

Plant Disease ◽  
2001 ◽  
Vol 85 (9) ◽  
pp. 977-984 ◽  
Author(s):  
I. Bujold ◽  
T. C. Paulitz ◽  
O. Carisse
Keyword(s):  
Crop Residues ◽  
Biocontrol Agent ◽  
Gibberella Zeae ◽  
Residue Type ◽  
Plant Type ◽  
Initial Inoculum ◽  
Ascospore Production ◽  
Corn Grain ◽  
Corn Residues

The potential of Microsphaeropsis sp. (isolate P130A) as an antagonist of Gibberella zeae was tested under in vitro and field conditions. Firstly, an in vitro method of ascospore production was developed on wheat and corn residues. The plant type (corn or wheat), residue type (straw/stalk or grain), and incubation conditions (closed or open) had a significant effect on ascospore production. Perithecia were more abundant on wheat and corn grain incubated under open conditions. On these two substrates, the application of Microsphaeropsis sp. significantly reduced ascospore production. On wheat, the antagonist had a significant effect when applied 2 weeks before (-2), at the same time (0), and 4 weeks after (+4) inoculation with G. zeae, with 1.73, 0.31, 1.11, and 1.36 log ascospores per cm2 for the control, -2, 0, and +4 weeks treatments, respectively. On corn, Microsphaeropsis sp. had a significant effect when applied 2 weeks before, at the same time, 4 weeks after, and 6 weeks after inoculation with G. zeae with 3.02, 0.23, 1.29, 2.35, and 2.22 log ascospores per cm2 for the control, -2, 0, +4, and +6 weeks treatments, respectively. When applied to crop residues in the field as postharvest or preplanting applications, Microsphaeropsis sp. had no effect on the pattern of perithecia maturation, but significantly reduced the number of perithecia produced on two sampling dates, May 1998 and July 1999. There is a potential to biologically reduce the initial inoculum of G. zeae; however, more work is needed to optimize the efficacy of the biocontrol agent.

Effects of Residue Type on Persistence and Biological Activity of Foliar Fenpropathrin

1991 ◽  
Vol 84 (2) ◽  
pp. 390-396 ◽  
Author(s):  
Dan Veierov ◽  
Annie Fenigstein ◽  
Meir Klein
Keyword(s):  
Biological Activity ◽  
Residue Type
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