Peptide Bond Hydrolysis Catalyzed by the Wells–Dawson Zr(α<sub>2</sub>-P<sub>2</sub>W<sub>17</sub>O<sub>61</sub>)<sub>2</sub> Polyoxometalate
作者:Gregory Absillis、Tatjana N. Parac-Vogt
DOI:10.1021/ic301364n
日期:2012.9.17
this paper we report the first example of peptide hydrolysis catalyzed by a polyoxometalate complex. A series of metal-substituted Wells–Dawson polyoxometalates were synthesized, and their hydrolytic activity toward the peptidebond in glycylglycine (GG) was examined. Among these, the Zr(IV)- and Hf(IV)-substituted ones were the most reactive. Detailed kinetic studies were performed with the Zr(IV)-substituted
在本文中,我们报告了由多金属氧酸盐配合物催化的肽水解的第一个实例。合成了一系列金属取代的Wells-Dawson多金属氧酸盐,并研究了它们对甘氨酸甘氨酸(GG)中肽键的水解活性。其中,Zr(IV)-和Hf(IV)-取代的那些反应性最高。详细的动力学研究使用的锆(IV)取代的Wells-Dawson型多金属氧酸盐进行ķ 15 H [锆(α 2 -P 2 w ^ 17 ö 61)2 ]·25H 2将其示出O操作充当催化剂GG中肽键的水解。K的形态15 H [锆(α 2 -P 2w ^ 17 ø 61)2 ]·25H 2 ö其是高度依赖于PD,浓度,和溶液的温度,得到了充分的帮助下确定31 P NMR光谱和其对GG水解速率的影响进行了研究。在pD 5.0和60°C时观察到最高反应速率(k obs = 9.2(±0.2)×10 –5 min –1)。有10倍过量的GG在K的存在下进行水解15 H [锆(α
Label-assisted laser desorption/ionization mass spectrometry (LA-LDI-MS): use of pyrene aldehyde for detection of biogenic amines, amino acids and peptides
作者:Arundhoti Mandal、Amit K. Das、Amit Basak
DOI:10.1039/c5ra20678b
日期:——
flight (TOF) mass spectrometric measurement. By excluding the external matrix, the massspectrum becomes much cleaner being free of matrix related peaks and noises. Peaks corresponding to compounds/complexes formed between the analytes and the label are mostly seen in the spectrum. In this paper we report a LA-LDI mass spectrometry based method for detection of amines, including the ones ubiquitous to
Molecular Insight from DFT Computations and Kinetic Measurements into the Steric Factors Influencing Peptide Bond Hydrolysis Catalyzed by a Dimeric Zr(IV)-Substituted Keggin Type Polyoxometalate
作者:Tzvetan T. Mihaylov、Hong Giang T. Ly、Kristine Pierloot、Tatjana N. Parac-Vogt
DOI:10.1021/acs.inorgchem.6b01461
日期:2016.9.19
peptide bond hydrolysis, and (c) the influence of the aliphatic residues on the rate of hydrolysis. Formation of substrate–catalyst complexes of the dimeric POM 1 was predicted as thermodynamically unlikely. Instead, the substrates prefer to bind to the monomerization product of 1, [α-PW11O39Zr(OH)(H2O)]4– (2), which is also present in solution. In the hydrolytically active complex two dipeptide ligands
SOLOMONAMIDE ANALOGUE COMPOUNDS, PHARMACEUTICALS CONTAINING SOLOMONAMIDE ANALOGUE COMPOUNDS, AND PROCESSES FOR THE PREPARATION THEREOF
申请人:COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
公开号:US20150291659A1
公开(公告)日:2015-10-15
Solomanamide analogues of Formula-I having anti-inflammatory activity, and viable synthetic routes for the preparation of such analogues, including the synthesis of macrocyclic core of Salomanamide analogues. The Solomanamide analogues of Formula-I or their pharmaceutical salt may be provided in a pharmaceutical composition and administered in an effective amount for the treatment of inflammation and/or pain.