Protein decomposition

Eiweiss-. albuminous, albuminoid protein, -abbau, m. proteolysis, -abbauprodukt, n. protein decomposition product, eiweiss-kholich, a. albuminoid, -arm, a. poor in albumin or in protein. 

Figure 4. The set of thermograms of BSA in condensed state showing the temperature dependence of the mass spectra for volatile products of protein decomposition at m/z 17 (OH ), 28 (CO+), 34 (H2S),and44(C02).

On further decomposition tryptophane yields either indole or skatole. Not only are these final protein decomposition products present in the faeces, but they become absorbed from the intestine and pass into the urine where they are present as normal constituents, having first undergone oxidation forming indoxyl and skatoxyl which then esterify with sulphuric acid yielding, in the case of indole, indoxyl sulphuric acid, the potassium salt of which has been wrongly termed indican. 

The results of stareh eonverts in attending eaustie soda and calcium chloride mass of sugar increases. Advantages of the employed technology to the acid hydrolysis are higher dextrin coefficient, less contents salt in the products, and no protein decomposition. 

From the extensive literature on amino acids as intermediate products of protein decomposition only a few papers, which include S-containing amino... 

Putrescine tetramethylenediamine, a ubiquitous Polyamine (see), formed by decarboxylation of ornithine and, in some organisms, by decarboxylation of arginine to agmatine, followed by cleavage to P. and urea. It is the precursor of spermine and spermidine in ordinary metabolism, and is essential for cell division. It accumulates during bacterial degradation of arginine. Increased protein decomposition (e. g. in cholera) leads to the appearance of P. in urine and feces. 

Intermediate products of the biopolymers decomposition are active participants of the cell signalling system. Obviously, this is characteristic for hyaluronan as well. Polypeptide fragments often possess hormonal activity. The most comprehensive description of hormonal protein decomposition, which results in a series of hormonal peptides, is described in [135]. At the decomposition of the nucleus protein (histone H4), an octapeptide with clear opioid properties is created. The monomer products of the biopolymers decomposition could be re-utilized into new polymers or into hormone synthesis. 

Froteinoria.— Normal urine contains a trace of protein, probably derived from the urinary tract. Under abnormal renal conditions the serum proteins may appear, giving rise to albuminuria. Again, in disease of the kidney and other tissue, protein decomposition products may escape and cause proteosnria. While in multiple osteo-myelomata, skeletal material may be excreted as Bence-Jones protein. ... 

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