Biodegradable Polymers Composed of Naturally Occurring α-Amino Acids

... 107 Biodegradable Polymers Composed of Naturally Occurring α - Amino Acids Ramaz Katsarava and Zaza Gomurashvili 5.1 Introduction The synthesis and study of biodegradable polymers is ... densing agent [15 – 17, 61] . 120 5 Biodegradable Polymers Composed of Naturally Occurring α-Amino Acids The covalent attachment of mono - ethanolamine to these polymers...

Ngày tải lên: 25/10/2013, 08:20

... reduction of disul- fides [19]. It should be noted that this phenomenon enables assignment of pairs of in-source cleavage prod- ucts to corresponding disulfide linked peptides, the sum of the masses of ... conflicting disulfide linkages; two of these correspond to a peptide with Fig. 1. Part of the output sheet of the VIRTUALMSLAB analysis of the MALDI-FTICR-MS data of the RNa...

Ngày tải lên: 07/03/2014, 12:20

... maintenance of the enterohepatic circulation of bile acids and therefore also participate in the homoeostatis of cholesterol. Members of SBATs are located either in apical membranes of ileum enterocytes, ... 2003 Site-directed mutagenesis of Ntcp (Eur. J. Biochem. 270) 1127 Transport of taurocholate by mutants of negatively charged amino acids, cysteines, and threonines of...

Ngày tải lên: 17/03/2014, 09:20

... rat study, daily oral consumption of a glyco- nated form of catechin resulted in a serum concentra- tion of 34.8 ± 6.0 lm [50]. The amount of EPCG in a single cup of green tea is  300 lm [51]. ... concentration of EPCG may reach 60 lm in a 60 kg human after oral con- sumption of a single cup of tea. In the present study, the polyphenols were tested at a standardized concen- t...

Ngày tải lên: 22/03/2014, 21:20

... References 1045 Biodegradable Polymers Composed of Naturally Occurring α-Amino Acids 107 Ramaz Katsarava and Zaza Gomurashvili5.1 Introduction 1075.2 Amino Acid-Based Biodegradable Polymers (AABBPs) ... Degradation 26611.4.1 Nonbiological Degradation of Polymers 26611.4.2 Biological Degradation of Polymers 26711.5 Measuring Biodegradation of Polymers 26711.5.1...

Ngày tải lên: 04/10/2012, 13:52

... creation of a highly versatile set of materials as a key component of new technologies. This collected series of texts, written by experts, has been put together to showcase the state of the art ... applications of biodegradable polymers, emphasizing the exciting potential of these materials. In the fi nal chapters, 15 – 16 , characterization methods and modelling techniques...

Ngày tải lên: 25/10/2013, 08:20

... various amounts of sodium pyruvate, 5 g of ammonium acetate, 0.6 g of pyrocatechol, 0.2 g of sodium sulfite,0.1 g of EDTA, and cells harvested from 100 ml of broth, in a total volume of 100 ml.The ... The mutant strain of E. coli which lacks l-proline-degrading enzyme was obtained and used for the host cells of produc- tion of l-hydroxyproline. Microbial Production of Am...

Ngày tải lên: 26/10/2013, 02:20

... preparation of enantiomerically pure a-de uterated (S)-amino acids [5–7]. In the framework of the generally accepted notions of mechanisms of PLP-dependent enzymes the mechanism of the i sotopic ... defines automatically the positions of the a-proton and the side chain of any bound amino ac id. The lability of the a-proton observed for a large number of amino acids [5] un...

Ngày tải lên: 19/02/2014, 16:20

... deletion of the last 42 amino acids from NBD2 of SUR2 resulted in ATPase activity resembling that of NBD2 of SUR2A rather than that of NBD2 of SUR2B: this might indicate that these amino acids are ... activities of NBD2A and NBD2B could result from an inhibitory effect of the C-terminal 42 amino acids of NBD2B or a stimulatory effect of the equivalent amino acids...

Ngày tải lên: 06/03/2014, 11:20

... inhibitory effect of some amino acids. Moreover, amino acids exert a wide range of effects via the activation of different signalling pathways and various transcription factors, and a number of cis elements distinct ... presence of amino acid(s) resulted in inhibition of the DNA binding of the involved transcription factors. By contrast, the presence of amino acid may also...

Ngày tải lên: 07/03/2014, 00:20