Báo cáo khoa học: From meiosis to postmeiotic events: Homologous recombination is obligatory but flexible doc

... compilation ª 2009 FEBS 589 MINIREVIEW From meiosis to postmeiotic events: Homologous recombination is obligatory but flexible Lo ´ ra ´ nt Sze ´ kvo ¨ lgyi and Alain Nicolas Recombination and Genome Instability ... of histone amino acids or histone-modifying enzymes. The replacement of histones during mammalian late spermatogenesis is reviewed by Gaucher et al. (th...

Ngày tải lên: 29/03/2014, 08:20

... (2009) From meiosis to post- meiotic events: Homologous recombination is obliga- tory but flexible. FEBS J 277, 571–589. 2 Kagawa W & Kurumizaka H (2009) From meiosis to postmeiotic events: ... MINIREVIEW From meiosis to postmeiotic events: Alignment and recognition of homologous chromosomes in meiosis Da-Qiao Ding 1 , Tokuko Haraguchi 1,2,3 and Y...

Ngày tải lên: 29/03/2014, 08:20

... nucleosomes Hyperacetylation Histone replacement by basic proteins Histone variants TPs - Prms Histone proteolysis Fig. 1. The secrets of histone disappearance in elongating spermatids. (A) Extensive incorporation of histone ... in histone displacement. In order to test this hypothesis, mice lacking both TPs and Prms would be required. Indeed, to understand the basis of histone replaceme...

Ngày tải lên: 29/03/2014, 08:20

... [2]. This particular amino acid is absent in URP, but the peptide is still a potent agonist at the UII receptor with a pharmacological profile equal to that of UII [17,20]. Therefore, this residue is ... confined to certain motor nuclei of the central nervous system (CNS). From the very beginning, these findings pointed to a possible neuromodulatory role for UII. The aim of this...

Ngày tải lên: 19/02/2014, 07:20

Ngày tải lên: 08/03/2014, 07:20

... strategy is to isolate the (finite-state) analysis of non-recursive syntactic structure, i.e. chunks, from larger, recursive structures. This results in a highly-efficient parsing architecture that is realized ... tree from the instance base needs to be modified to match the chunked input. This means that the output tree will group together only those elements from the chunked in...

Ngày tải lên: 17/03/2014, 07:20

... it is important to have common and agreed upon metrics to facilitate large scale evaluation efforts. 4.1.2 Precision and Pseudo Precision Precision is also a common measure. Borrowed from ... assign a score of 4 to all, 3 to most, 2 to some, 1 to hardly any, and 0 to none. The value assignment is for convenience of computing averages, since it is more appropri...

Ngày tải lên: 17/03/2014, 08:20

... sentence frequency (ISF) for these phrases using the entire ICSI meeting corpus. The ISF score of a phrase i is: isf i = N N i where N is the total number of sentences and N i is the number of sentences ... to avoid this rephrasing Markov (S2): we have to refine the tasks which we haven’t done order to avoid this rephrasing FP + IP: we have to refine the tasks more and more which...

Ngày tải lên: 23/03/2014, 17:20

... "agent-of" is attached to it. The mechanism of rule application is illustrated below. The form list generated by the morpho-semantic generator is checked against three MRDs (Collins Spanish-English, ... new LR is added, each lexical entry needs to be revisited and possibly updated. • Itule LIIS Constraints - The other approach is to maintain a bank of LRs, and...

Ngày tải lên: 23/03/2014, 20:21

... interact. This paper describes a concrete realisation of the RAGS object and arrows model, OASYS, as applied to a simple but flexible NLG system called RICHES. This is not the first such re- alisation: ... translated to cue phrases to express some rhetorical relations explicitly. Initially the plan- ner creates a skeleton document representation that is a one -to- one mapping of...

Ngày tải lên: 31/03/2014, 04:20