Báo cáo khoa học: "Dependency trees and the strong generative capacity of CCG" pot

... (Vijay-Shanker and Weir, 1994), there are few results about the strong generative capacity of CCG. This makes it difficult to gauge the similarities and differences between CCG and other formalisms in how they ... large fragment of CCG. We then explore the strong generative capacity of PF-CCG in terms of dependency trees. In particular, we cast new light on th...

Ngày tải lên: 31/03/2014, 20:20

... I in the presence of CI. More precisely, the )21 to )48 and )52 to )87 regions of the top strand and )24 to )53 and )58 to )87 regions of the bottom strand were protected by CI (Fig. 3B). The centers ... affinity of CI to the two operators, and the mecha- nism of action of CI. In the present study, we report the purification of /11 CI to near homogeneity...

Ngày tải lên: 07/03/2014, 00:20

... being the most studied of these. IFs maintain cell shape and the structural integrity of cell contents, and provide protection against various types of stress. The mechanism of action of OA as a potent tumor ... adhesion The adherence of cells to each other and to the elabo- rate mesh that comprises the extracellular matrix is mediated by multiprotein complexes....

Ngày tải lên: 18/02/2014, 14:20

... palytoxin action against the actin cytoskeleton (Fig. 3). At present, in spite of the impor- tance of the unpolymerized actin pool for the mainte- nance of the F-actin system, the cellular response Fig. ... constitute the actin cytoskeleton [13]. For a long time, it was believed that the role of this system was mainly structural, providing the sup- port needed to mai...

Ngày tải lên: 18/02/2014, 14:20

... rotundata and Dinophysis acuta [1–3,6,10–13]. After consumption of the algae by the shellfish, PTX-2 can be metabolized to other PTX derivatives. In the digestive gland of the scallop P. yessoensis, the ... supports the idea that lactone ring integrity is essential for the action of PTXs; oxidation on C43 decrease the toxic- ity of the molecule, and oxidation on C...

Ngày tải lên: 18/02/2014, 14:20

... man [8,9]. In the verteb- rate lens, the b and c crystallins together account for the majority of the soluble proteins (the other major family being the a-crystallins, members of the small heat-shock ... different regions of the eye. The expression of cN in the central regions of the lens, fiber cells that were laid down before birth, is consistent with the f...

Ngày tải lên: 19/02/2014, 17:20

... confirming that the mutation of Tyr186 to Phe186 does not grossly perturb the overall framework of the enzyme or the active site. The active sites of the enzymes are shown in stick format with the sigmaA ... related enzymes. Results Properties of the H181A and H184A enzymes The structure of PETN reductase solved in complex with prednisone, progesterone, 1,4-andros...

Ngày tải lên: 20/02/2014, 02:21

... inducing the release of the product and Mg 2+ , thereby leaving an Mg 2+ ion and a molecule of the substrate bound to the subunit capable of catalyzing hydrolysis. Therefore, binding of Mg 2+ in ... to the Ser102 conformation and the nature of the metal ion bound to the M3 site [10]. The APaseP i structure displays an increased mobility of the active site...

Ngày tải lên: 21/02/2014, 00:20

... lysates and subse- quent elution from the beads. The initial article outlin- ing the synthesis of the beads and some of their fundamental properties has recently been published [20], together with ... bead of the same hexapeptide distri- buted throughout the core of the pearl. This amounts to a ligand density of  40–60 lmolÆ mL )1 bead volume Sherlock Holmes and...

Ngày tải lên: 07/03/2014, 10:20

... use of a classification of the rules themselves. Since the lowest loop of the pars- ing logic (see Fig. 1) iterates on the codes of the sec- ond constituents, the rules against which the paired ... that is, in the grammar. If the ordered pair is matched by a pair of IC's in the table, the code of the construction formed by the IC's is add...

Ngày tải lên: 07/03/2014, 18:20