Báo cáo khoa học: "PHRASE STRUCTURE TREES BEAR MORE FRUIT THAN YOU WOULD HAVE THOUGHT" ppt

... PHRASE STRUCTURE TREES BEAR MORE FRUIT THAN YOU WOULD HAVE THOUGHT* Aravind K. Joshi and Leon "S." Levy Department ... gremmmrs [e.g., i, 2, 3, 4]. We will present several results and ideas related to phrase structure trees which have significant relevance to computational lin- guistics. We %~_nT to accomplish ... related work, we have discovered tha...

Ngày tải lên: 17/03/2014, 19:20

... Biochem. 269) Ó FEBS 2002 the ®rst to contain more than one SAK molecule in an asymmetric unit. The SAK(S41G) structure presented here is similar to the monomer structure, SAKSTAR, previously reported by ... ith DENZO andscaledwith SCALEPACK [25]. Structure determination The c rystal structure has been determined at 2.3-A Ê resolu- tion using molecular replacement with a model from...

Ngày tải lên: 23/03/2014, 21:21

... crystal structure of TaLcc1 does not have a chloride attached to the T2 copper, as observed in the crystal structure of MaL. The unique fea- ture of TaLcc1 and MaL as compared with other laccases structures ... crystal structures of laccases from fungi and bacteria are available, but ascomycete types of fungal laccases (asco-lac- cases) have been rather unexplored, and to date only th...

Ngày tải lên: 14/02/2014, 18:20

... complex (observed structure factors F pep o ) with an apo structure of importin-a (70–529) (observed structure factors F apo o ). This structure is described in ref. [42]. The structure factors ... translocation; however, in the crystal structure of soluble CLIC4, the putative NLS adopts a helical conformation that would pre- clude binding to importin-a (refer to Fig . 2D). Mor...

Ngày tải lên: 14/02/2014, 19:20

... Because electrostatic interactions in proteins are more domi- nant when the solvent polarity is lower, we hypo- thesized that ApeSOD would be more stable than TthSOD in an organic solvent. When we compared ... of ethanol in the solution destabilized both ApeSOD and TthSOD. However, the extent of the destabilization was more significant in TthSOD than in ApeSOD (Fig. 4C). In other w...

Ngày tải lên: 14/02/2014, 22:20

... crystal structures reported here, PhyK seems to have a preformed substrate-bind- ing site and to be less optimized for efficient substrate hydrolysis than AppA. Results and Discussion Overall structure The ... with E. coli phytase AppA Overall, PhyK bears significant structural similarity to other HAPs. A structure- based search with dali [17] revealed several similar structures. With rm...

Ngày tải lên: 16/02/2014, 09:20

... HtA. With this aim, we determined the structure of HtA by 1 H-NMR methods, and the possible structure function relation- ships have been discussed. The solution structure is similar to those reported ... structural requirements for activities unique to ribotoxins. Here, we have determined the structure of HtA by NMR methods. The structure consists of one a-helix, a helical turn a...

Ngày tải lên: 18/02/2014, 08:20

... members differentially expressed in several organs and certain tumors. To date, more than 30 mammalian members of this group have been identified and have, according to their sequence similarity, been grouped into ... Tyr60g hydroxyl group. As seen in the structure- based sequence alignment (Fig. 3), the residues at position 41 in the other TTSPs are significantly smaller and more hyd...

Ngày tải lên: 19/02/2014, 00:20

... proteins of the family have been structurally characterized to date: TT1542 from Thermus thermophilus [7] and MshB from Mycobacterium tuberculosis [8,9], whose structures have been determined at ... Quaternary Structure server (http://pqs.ebi.ac.uk/). These values indicate a signifi- cant stabilization upon hexamerization. In agreement with the crystal structure, gel filtration experimen...

Ngày tải lên: 19/02/2014, 00:20

... the rmsd of a structure is less than 1 A ˚ compared to the lowest energy structure in that starting position, that was grouped together with the lowest energy structure forming a cluster of structure. ... A comparison of the b-turn structure of cER with the similar region in the crystal structure of rat and human CD2 was carried out. In the rat CD2 crystal structure, the b-turn...

Ngày tải lên: 19/02/2014, 13:20