Barrel-shaped ClpP Proteases Display Attenuated Cleavage Specificities was written by Gersch, Malte;Stahl, Matthias;Poreba, Marcin;Dahmen, Maria;Dziedzic, Anna;Drag, Marcin;Sieber, Stephan A.. And the article was included in ACS Chemical Biology in 2016.Quality Control of (S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid The following contents are mentioned in the article:
ClpP is a self-compartmentalizing protease with crucial roles in bacterial and mitochondrial protein quality control. Although the ClpP homocomplex is composed of 14 equiv active sites, it degrades a multitude of substrates to small peptides, demonstrating its capability to carry out diverse cleavage reactions. Here, we show that ClpP proteases from E. coli, S. aureus, and human mitochondria exhibit preferences for certain amino acids in the P1, P2, and P3 positions using a tailored fluorogenic substrate library. However, this high specificity is not retained during proteolysis of endogenous substrates as shown by mass spectrometric anal. of peptides produced in ClpXP-mediated degradation reactions. Our data suggest a mechanism that implicates the barrel-shaped architecture of ClpP not only in shielding the active sites to prevent uncontrolled proteolysis but also in providing high local substrate concentrations to enable efficient proteolytic processing. Furthermore, we introduce customized fluorogenic substrates with unnatural amino acids that greatly surpass the sensitivity of previously used tools. We used these to profile the activity of cancer-patient- and Perrault-syndrome-derived ClpP mutant proteins. This study involved multiple reactions and reactants, such as (S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid (cas: 86069-86-5Quality Control of (S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid).
(S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid (cas: 86069-86-5) belongs to piperidine derivatives. The piperidine ring can be found not only in more than half of the currently known structures of alkaloids, but also in many natural or synthetic compounds with interesting biological activities. Piperidine prefers a chair conformation, similar to cyclohexane. Unlike cyclohexane, piperidine has two distinguishable chair conformations: one with the N–H bond in an axial position, and the other in an equatorial position.Quality Control of (S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid
Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem