Protein word origin

In words, the DIFF equation states that the observed collagen 8 values are determined by both the dietary protein (with additional isofractionation), and the non-protein in the diet (with a potentially different isofractionation), by an amount that may vary with the fraction of each component in the diet. Note that if dp and dN were both set equal to -i-5%o, and if the f(F) were set = 1, this would re-state the original DIFF you are (i.e., your collagen is) what you eat (protein and non-protein) plus five permil . 

This chapter does not purport to be the final word on water and fat absorption of plant proteins. Rather, it is designed to summarize information on the mechanism of protein interaction with water and fat, to pull together the various terms used to describe and methods used to assess water and fat absorption, and to encourage a more uniform and quantitative approach to the study of protein functionality and performance in food. The major protein products to be examined in this review are of soy origin other products will be reviewed briefly in comparisons with soy products. 

Application of a least-squares method to the linearized plots (e.g., Scatchard and Hames) is not reasonable for analysis of drug-protein binding or other similar cases (e.g., adsorption) to obtain the parameters because the experimental errors are not parallel to the y-axis. In other words, because the original data have been transformed into the linear form, the experimental errors appear on both axes (i.e., independent and dependent variables). The errors are parallel to the y-axis at low levels of saturation and to the x-axis at high levels of saturation. The use of a double reciprocal plot to determine the binding parameters is recommended because the experimental errors are parallel to the y-axis. The best approach to this type of experimental data is to carry out nonlinear regression analysis on the original equation and untransformed data. 

There are two possibilities for the origin of the stereoselectivity in the first one, the reactant loosely associates or collides with the proteins in a stereoselective way. In the other one, the reactant stereoselectively diffuses through the protein. Though both possibilities provide reasonable explanation of the stereoselectivity, the authors suggested that the former was plausible because the cationic quencher attacked the positively charged Lys and/or Arg residue(s) in the heme pocket, and the bulky quenchers might not diffuse into the heme pocket in other words, the reaction would occur at the surface of the protein [68]. 

The FASTA algorithm was originally described by Lipman and Pearson (1985) as a method of locating similar sequences by first identifying short words common to the compared sequences. The words are any short DNA or protein sequence (n-mer or k-tuple) k-tuple sizes of 1 or 2 are used for protein sequences, and up to 6 bases for DNA searches. In the first similarity search, the test sequence (or query) and comparison sequence are lined up, and under each position is recorded the number of elements that the comparison sequence must be moved to the right (+) or left (-) to achieve a match. If the two sequences are very similar in a particular region, then a particular displacement will occur frequently if not, all possible displacements will be found (Wilbur and Lipman 1983). 

WD repeats were, in a way, where the coronin story started and so I can t end this review without a word about the structure of coronins. The archetypal WD repeat proteins are the Gp subunits, which have seven repeats and fold into a seven-bladed P-propeller. Although motif searches only identify five canonical WD repeats in coronins, the crystal structure of coronin 1A has shown that there are two cryptic WD repeats and that like the Gp subunits, the protein folds into a seven-bladed P-propeller structure. So while coronin did not turn out to be a direct link between G-protein coupled receptors and the cytoskeleton, they have turned out to be more structurally similar to the Gp subunits than was originally thought based on sequence homology. 

Copper is a reddish metallic element (symbol Cu atomic no. 29). Its symbol derives from the Latin word cuprum, because it was originally discovered in Cyprus. It is widely found as different salts in minerals such as atacamite (chloride) azurite and malachite (carbonates) bornite, chalco-cite, chalcopjrite, stannite, tennantite, and tetrahedrite (sulfides) chalcanthite (sulfate) dioptase (silicate) erinite and olivenite (arsenates) tenorite (oxide) torbernite (phosphate) and zorgite (selenide). Copper is an essential constituent of several enzymes. It is carried in the blood by a specific copper-binding protein, ceruloplasmin. 

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