Proteases in the blood - Biology Stack Exchange
2015年11月7日 · Also the proteases may have certain specificities but not others. Certain proteins may not contain the moieties that the enzymes need to bind and catalyze the reactions and this acts to "protect" the protein from degradation.
Difference between Peptone, Peptide and Proteose
2017年3月31日 · Long, Confusing and Out-Dated Details. The terms peptone and proteose were first used in the late 19th century, which makes finding substantive definitions, well, difficult.
proteins - Why are prions in animal diets not destroyed by the ...
2019年5月1日 · Proteases have clefts, or subpockets, into which proteins fit, where the substrate (protein) gets cut. Infectious or pathogenic prions are resistant to proteases , because of their three-dimensional shape, which hides away parts of the prion that would normally fit in proteases and which would cause the prion to be digested.
What is the function of cystine, cysteine, and cysteine protease?
2017年8月28日 · Cysteine proteases. Are a class of enzymes that degrade proteins, and utilise cysteine-residues as part of their catalytic mechanism. Cystine. Is, as you said, a cysteine-dimer.. Which basically means two cysteines stuck together. These are often formed in the intermediate steps of a cysteine protease's catalytic mechanism.
biochemistry - What's the role of bromelain in pineapple?
2020年4月28日 · Bromelain refers to one of two proteases found in pineapple and its relatives. Like other proteases, many believe it has therapeutic uses and it's the subject of a lot of research. But what role does it play in the pineapple itself? Why does pineapple (or papaya, for that matter) generate large quantities of protease when other plants do not?
molecular biology - Does sample buffer require EDTA for protein ...
2015年1月8日 · Both steps ensure that proteases are either inhibited or completely denaturated, which will both protect the sample. The only reason I can think of for using EDTA is that it can help to destabilize your target protein, when a co-factor which is important for the structure is complexed by EDTA and thus keep it in solution after the denaturation.
What happens to the enzymes produced by the digestive system?
2017年3月11日 · $\begingroup$ Proteases, being themselves proteins, are cleaved by other protease molecules, sometimes of the same variety. $\endgroup$ – JM97 Commented Mar 11, 2017 at 16:24
Why is pepsin able to operate at low pH? - Biology Stack Exchange
2018年6月5日 · Pepsin is a protease that operates in the acid pH of the stomach. Many proteins are denatured at low pH, and most enzymes — whether or not they denature — require a higher pH for activity.
Why proteinase K doesn't degrade itself? - Biology Stack Exchange
2014年10月7日 · According to invitrogen proteinase K does undergo autolysis, but that some leftover fragments still have protease activity.
biochemistry - What is the process of degradation of proteins into ...
2016年2月19日 · $\begingroup$ In addition to proteasome and lysosome, soluble (non-organelle) proteases may become important, depending on circumstances. $\endgroup$ – nvja Commented Mar 28, 2016 at 4:11