Báo cáo khoa học: Unique modifications of translation elongation factors pot

... elongation steps of translation. Elongation of polypeptide chains during translation is a conserved process among prokaryotes and eukary- otes. Single steps of elongation consist of (a) binding of aminoacyl-tRNAs ... authors. Unique modifications of translation elongation factors E. Greganova et al. 2624 FEBS Journal 278 (2011) 2613–2624 ª 2011 The Authors Journa...

Ngày tải lên: 28/03/2014, 22:20

... recruitment of other factors such as histone deacetylases or VHL [98], or may well be an artefact of overexpression. Structural implications Synthetic peptides composed of the minimal VHL binding motifofHIF-1a ... respon- sible for promoting VHL association [83]. In support of this hypothesis, a synthetic peptide comprising of the minimal VHL binding motif of HIF-1a was unable t...

Ngày tải lên: 20/02/2014, 23:20

... the instance-based approach. At the heart of this ap- proach, human judges are presented not only with a rule but rather with a sample of examples of the rule’s usage. Instead of thinking up valid contexts for ... The essence of our proposal is a (apparently non-trivial) protocol of a sequence of questions, which deter- mines rule validity in a given sentence. We shall next desc...

Ngày tải lên: 08/03/2014, 02:21

... Distribution-Based Pruning of Backoff Language Models Jianfeng Gao Microsoft Research China No. 49 Zhichun Road Haidian District 100080, China, jfgao@microsoft.com Kai-Fu Lee Microsoft Research China No. ... District 100080, China, kfl@microsoft.com Abstract We propose a distribution-based pruning of n-gram backoff language models. Instead of the conventional approach of pruning n-gra...

Ngày tải lên: 17/03/2014, 07:20

... scheme, verbs of move- ment are often described with PTRANS and PROPEL. ~t is interesting that some of the building blocks Moran in- ferred seem to be subparts of the structures of PTRANS and ... input, Moran first tries to use a on~inatlon of the building blocks to represent the meaning of each new situation iC encoiJ~Cer8 • A sac of building blocks, once inferred, ne...

Ngày tải lên: 17/03/2014, 19:20

... member of a family or of a set of fellow-workers, for example, to generate responses (10b) and (ll}c), respectively. C. A Scalar Representation of YNQs. Given this characterization of appropriate ... scrotums)dates a wide variety of responses in a uniform way. II CURRENT REPRESENTATIONS OF YNQ, S Among st:~ad:,rd accounts of ¥NQs, I-lintikka's (l.lh:tik.~a, 197~)...

Ngày tải lên: 17/03/2014, 19:21

... CONCLUSION The first step of synthesis is the decomposition of the input semantic repre- sentation into the set of semantic compo- nents. The possibilities of lexicalization of components are determined ... framework of the question- answering system. Right from the start of synthesis the process of decomposition of the input se- mantics takes place in order to captu...

Ngày tải lên: 18/03/2014, 02:20

... determined the crystal structure of one of the intermediates of the oxidation process of this Hb [9]. This intermediate is characterized by a different binding state of the a and b chains. A CO molecule ... crystal structure of two oxidized forms of HbTb provides novel information on the different oxidation pathway of the a and b chains of AFHbs and on the accessible quatern...

Ngày tải lên: 23/03/2014, 12:20

... the role of speech style; [4] for defense of competence). In addition to the system having a model of the user, the user will have a model of the system, determined by the nature of his interaction ... conversation perform? a. Organization of the interaction, regulation of turns [7], [i]. In the natural language dialog systems of today, each turn consists of a senten...

Ngày tải lên: 24/03/2014, 01:21

... first three occurrences of z, the state set of the parser will reflect the possibility that any three of the phrases A,/3, C, D, E might have been seen ,'rod any two of then| might remain ... prediction of phrases. In cases like this, $hieber's al- gorithm enumerates all of the combinations of k elements taken i at a tin|e, where k is the rule length and i is the...

Ngày tải lên: 24/03/2014, 01:21