scholarly journals Primary Experiments for Determination of Sulfur-Containing Amino Acid Requirement in Female Broilers Affected by Age.

1993 ◽  
Vol 30 (1) ◽  
pp. 31-39 ◽  
Author(s):  
Kazuyuki KOIDE ◽  
Yoshiyuki OHTA ◽  
Michiaki ITO ◽  
Emiko WATANABE ◽  
Masaaki TOYOMIZU ◽  
...  
Keyword(s):  
Amino Acid ◽  
Amino Acid Requirement ◽  
Sulfur Containing

4.1 The Nitrogen Needs of Ruminants

1982 ◽  
Vol 6 ◽  
pp. 79-87 ◽  
Author(s):  
E. L. Miller
Keyword(s):  
Amino Acid ◽  
Physiological State ◽  
Nutrient Supply ◽  
Metabolizable Energy ◽  
Amino Acid Requirement ◽  
Diet Formulation ◽  
Nutritional Characteristics ◽  
Break Points ◽  
Degradable Protein

The organizers of this symposium invited me to review factors which influence the N needs of ruminants. Such a request seems to imply that, for each class of ruminant, e.g. cattle or sheep, growing or lactating, there is a definitive N or amino acid requirement. If this is known, then diets may be formulated to provide that amount of N or amino acid and the expected level of production should be achieved. As a corollary of this approach, the determination of the nutritional characteristics of the diet, its metabolizable energy (ME), rumen degradable protein (RDP) or undegraded protein (UDP), appears to be a separate issue. While such a simplistic view has advantages for ease of diet formulation, it is unlikely to be entirely correct. In general, animal responses to increasing nutrient supply are curvilinear and do not show sharp break points defining a minimum amount of nutrient to give maximum production. Secondly, animal responses are not independent of diet and, conversely, the energy and protein values of the diet depend on the physiological state of the animal, e.g. the level of food intake influences rate of passage of digesta, the extent and site of digestion and the form of metabolites absorbed.

scholarly journals Determination of amino acid sequences in peptides by mass spectrometry. Desulfurization of sulfur-containing peptides

FEBS Letters ◽  
1970 ◽  
Vol 8 (4) ◽  
pp. 207-209 ◽  
Author(s):  
R. Toubiana ◽  
J.E.G. Barnett ◽  
E. Sach ◽  
B.C. Das ◽  
E. Lederer
Keyword(s):  
Mass Spectrometry ◽  
Amino Acid ◽  
Amino Acid Sequences ◽  
Sulfur Containing

Mass spectrometric determination of the amino acid sequence in peptides: Desulfurization of sulfur-containing peptides

1969 ◽  
Vol 25 (9) ◽  
pp. 913-914 ◽  
Author(s):  
A. A. Kiryushkin ◽  
V. A. Gorlenko ◽  
B. V. Rosinov ◽  
Yu. A. Ovchinnikov ◽  
M. M. Shemyakin
Keyword(s):  
Amino Acid ◽  
Amino Acid Sequence ◽  
Mass Spectrometric ◽  
Mass Spectrometric Determination ◽  
Sulfur Containing

Polypeptides Folding: Rules for the Calculation of the Backbone Dihedral Angles φ starting from the Amino Acid Sequence

2020 ◽  
Author(s):  
Michele Larocca
Keyword(s):  
Amino Acid ◽  
Amino Acid Sequence ◽  
Theoretical Approach ◽  
Polypeptide Chain ◽  
Hydrophobic Effect ◽  
Side Chain ◽  
Dihedral Angles ◽  
Mechanical Forces ◽  
Specific Chemical

<p>Protein folding is strictly related to the determination of the backbone dihedral angles and depends on the information contained in the amino acid sequence as well as on the hydrophobic effect. To date, the type of information embedded in the amino acid sequence has not yet been revealed. The present study deals with these problematics and aims to furnish a possible explanation of the information contained in the amino acid sequence, showing and reporting rules to calculate the backbone dihedral angles φ. The study is based on the development of mechanical forces once specific chemical interactions are established among the side chain of the residues in a polypeptide chain. It aims to furnish a theoretical approach to predict backbone dihedral angles which, in the future, may be applied to computational developments focused on the prediction of polypeptide structures.</p>

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