Báo cáo khoa học: Redox reaction between amino-(3,4-dihydroxyphenyl)methyl phosphonic acid and dopaquinone is responsible for the apparent inhibitory effect on tyrosinase doc

... would favor the redox reaction between dopaquinone and the phosphonic diphenol. Because of the irreversibility of the systems (cyclization of dopaquinone and decomposition of the phosphonic o-quinone) the ... Redox reaction between amino-(3,4-dihydroxyphenyl)methyl phosphonic acid and dopaquinone is responsible for the apparent inhibito...

Ngày tải lên: 31/03/2014, 09:20

... R max stands for the maximal response, C is the concentration of a ligand, and K on is the equilibrium association constant. For a single-site interaction, i ¼ 1, for a two-site binding, i ¼ 2, and ... n is the number of tested ligands, SD is the standard error, R 2 is the correlation coefficient. This correlation implies the direct relationship between t...

Ngày tải lên: 16/03/2014, 16:20

... ran the forward reaction (the formation of HP) using both DHNP and DHMP as the substrates and the reverse reaction (the formation of DHNP and DHMP) with HP and GA. For the forward reaction, three ... various forms in solution and only a small fraction is in the correct form for the reaction [19,20]. To further investigate the issue of the reversibility...

Ngày tải lên: 19/02/2014, 00:20

... the 49th Annual Meeting of the Association for Computational Linguistics, pages 201–210, Portland, Oregon, June 19-24, 2011. c 2011 Association for Computational Linguistics A Large Scale Distributed ... and TAGGER operations, some hypotheses are discarded due to the maximum number of hypotheses the stack can contain at any given time. In CONSTRUCTOR operation, the resulting...

Ngày tải lên: 20/02/2014, 04:20

... of HSP70 is essential for the inhibition of H 2 O 2 -induced activation of caspases-9 and -3 and apoptosis. (A) The effects of HSP70 and its deletion mutant proteins on the acti- vation of caspases-9 ... apoptosis. The role of the ATP-binding domain of HSP70 in the prevention of the release of Smac and apoptosis after exposure to H 2 O 2 To determine which region o...

Ngày tải lên: 16/03/2014, 01:20

... Lexical System The lexicon of Morphy is very compact as it only stores the base form for each word together with its inflection class. Therefore, the complete morphological information for 324,000 ... lemmata for each word form. Secondly, the tagger determines the grammatical categories of the word forms. If, for any of the lemmata, the inflected form corre- s...

Ngày tải lên: 17/03/2014, 07:20

... essential for photorespiratory and one-carbon metabolism, and the vital function of this enzyme complex is indicated by the fact that its inactivation is fatal to plants [4] and animals [5]. The GDC ... assay conditions may be closer to the situation in C 4 leaf mitochondria, which contain distinctly less GDC, and even closer to that of root mitochondria. Furthermore, it...

Ngày tải lên: 23/03/2014, 04:20

... such as visual and olfactory perception, hormone action, neurotransmis- sion, growth and differentiation control. GPCRs therefore represent major therapeutic targets. Histamine has one of the broadest ... This dual effect of both stabilizing and estimating functional receptors greatly facilitated the optimization of conditions for solubilization, purification and reconstitution...

Ngày tải lên: 30/03/2014, 14:20

... a form of comparison between doc- uments and queries. In traditional IR methods, this comparison is done based on the use of com- mon index terms in the document and the query (Salton and ... a query and on the sim- ilarity between the terms, and ranges from 0 to 1. The weight of an expansion term depends both on the entire query and on the simi...

Ngày tải lên: 31/03/2014, 21:20

... with the sequence SGLRSRAQASNS. The tetrameric structure of GAPDH is schematically shown on the right. The distances between the N- terminal amino acids of subunits O and P, subunits O and Q and ... life- time as that of the FRET component in the donor curve (M. Takada et al., unpublished observation). Besides glycolysis and gluconeogenesis, GAPDH and PGK have di...

Ngày tải lên: 16/02/2014, 09:20