Tài liệu Báo cáo khoa học: Kinetic basis for linking the first two enzymes of chlorophyll biosynthesis doc

... Kinetic basis for linking the first two enzymes of chlorophyll biosynthesis Mark Shepherd, Samantha McLean and C. Neil Hunter Robert Hill Institute for Photosynthesis and Krebs Institute for ... accelerating the formation and breakdown of the catalytic intermediate, providing a kinetic link between the first two reactions of chlorophyll biosynthe...

Ngày tải lên: 20/02/2014, 02:21

... while most of the protein components are integral in the membrane, most of these mitochondrial pro- teins behave as if they have a-helical transmembrane domains, rather than b-barrels. These proteins ... shows a hydropathy analysis of the Om14 sequence that predicts two or three a-helical transmem- brane segments, in support of the behavior of the protein in Triton X-114...

Ngày tải lên: 19/02/2014, 07:20

... half-buried, and the form of the cleft is markedly different from those of TvuCMBP and EcoMBP. These observations suggest that the structure of the N-domain part and the capacity of the sugar-binding site ... complex, the specificity of the bacterial sugar-binding proteins should be defined in terms not of the affinities for sugars but of whether the protein a...

Ngày tải lên: 19/02/2014, 00:20

... that the enzy- matic activity of RPE65c is iron-dependent. Characterization of the kinetic parameters of the enzymatic activity of zebrafish RPE65c To determine the steady-state kinetics of the ... thetase to esterify the 13cROL generated in the reac- tion. Therefore, 13cROL is accumulated in the absence of LRAT in the reaction (Fig. S3B). Under the in vitro a...

Ngày tải lên: 14/02/2014, 14:20

... properties of derivatives modified in the northern ribose of cADPR in permeabilized T-cells, it was observed that replacement of the hydroxyl group at C2¢¢ [for clarity atoms of the ‘northern ribose’ ... diphosphoribose. The development of novel cADPR analogues revealed new insights into the structure–activity relationship. Substitution of either the northern ribose or...

Ngày tải lên: 20/02/2014, 01:20

... preceding context w 1 . w n−1 , to be the ratio of the num- ber of occurrences in a training corpus of the N- gram w 1 . w n to the total number of occurrences of any word in the same context: p(w n |w 1 . ... depends, at most, on the N-gram length and the the N-gram count itself. The values of the α, β, and γ parame- ters depend on the context w 1 . w n−1 . F...

Ngày tải lên: 20/02/2014, 09:20

... (composed of the values of the features listed in Table 2). For instance, in the p a policy, the deci- sion in the last row of the table (give a joke or not), depends on whether or not there has ... graph of the distribution of the five different evaluation measures in the training data (see section 4.2 for the statement wordings). M1 is probably the most im...

Ngày tải lên: 20/02/2014, 12:20

... proposed to take the Wikipedia categorization system as a semantic network which served as basis for computing the semantic related- ness of words. In the following we present the API we used ... provides a layer for calling Perl routines from the Java API. Perl routines take care of the bulk of querying ency- clopedia entries to the MediaWiki software (which in turn...

Ngày tải lên: 20/02/2014, 12:20

... stead of document in the definition of idf. The def- inition of idf in our system is the following. of segments in the manual idf(t) = log ~ of segments in which t occurs + 1 Then a ... pairs of segment according to the same guideline we did in the first experi- ment by two students of the engineering depart- ment of our university. The numbers of...

Ngày tải lên: 20/02/2014, 18:20

... (2008). Their empirical results show that the quality of non-expert annotations is comparable to the quality of expert annotations on a variety of natural language tasks, but the cost of the annota- tion ... annotations for 10,170 word-sense pairs from Macquarie The- saurus 2 . They analyzed their annotations, looking for associations with the 11 basic color terms from...

Ngày tải lên: 22/02/2014, 02:20