RNA riboxom (ribosomal RNA-rRNA) pptx
RNA riboxom (ribosomal RNA-rRNA) pptx
... RNA riboxom (ribosomal RNA- rRNA) rRNA cùng với protein cấu tạo nên ribosome. rRNA chiếm tỷ lệ cao trong tế bào có thể đến 75% của tổng RNA. Ở các ribosome khác nhau có các rRNA khác ... rRNA 28S; 5,8S; 5S + Đơn vị nhỏ (40S) có rRNA 18S - Prokaryote và lục lạp, ty thể có hệ số lắng khi ly tâm là 70S, gồm 2 + Đơn vị lớn (50S): có loại rRNA 23S; 5S + Đơn vị nhỏ (30S): có rR...
Ngày tải lên: 21/03/2014, 01:20
Báo cáo Y học: Distinct parts of minichromosome maintenance protein 2 associate with histone H3/H4 and RNA polymerase II holoenzyme pptx
... C-terminal domain of RNA polymerase II cou- ples messenger -RNA processing to transcription. Nature 385, 357– 361. 22. Chang, M. & J.J. (1997) A multiplicity of mediators: alternative forms of ... D. (1996) A human RNA polymerase II associated complex with SRB and DNA-repair proteins. Nature 381, 86–89. 4. Ossipow, V., Tassan, J.P., Nigg, E.A. & Schibler, U. (1995) A mammalian R...
Ngày tải lên: 17/03/2014, 10:20
Tài liệu Báo cáo khoa học: Functional interaction between RNA helicase II⁄Gua and ribosomal protein L4 pptx
... L4; rDNA, ribosomal DNA; rRNA, ribosomal RNA; RNP, ribonucleoprotein; siRNA, small interfering RNA; snRNA, small nuclear RNA; snoRNA, small nucleolar RNA. 3788 FEBS Journal 272 (2005) 3788–3802 ... ribosomal RNA production, c-Jun-mediated gene expression or, as yet, other undiscovered mechanisms. RNA helicases are believed to function through regulation of RNA structure rearrangem...
Ngày tải lên: 20/02/2014, 01:20
Báo cáo khoa học: In vivo RNA interference in oyster – vasa silencing inhibits germ cell development pptx
... mRNA, for four of nine oysters injected with 20 lg of dsRNA (44%) and for four of five oysters injected with 100 lg of dsRNA (80%) (Fig. 4). The injection of oyvl-dsRNA clearly triggered an RNAi mechanism, ... dsRNA could knock down the expression of specific genes [5]. The 25 nucleo- tide small interfering RNA fragments generated by processing long dsRNAs are reported to be the media- tors...
Ngày tải lên: 07/03/2014, 00:20
Báo cáo khoa học: Synthesis and function of ribosomal proteins – fading models and new perspectives pptx
... authors indicate microRNA-10a to be a trans-acting element implicated in the translational regulation of RP mRNAs [31]. The pairing of microRNA-10a with the 5¢-UTRs of three RP mRNAs stimulates RP mRNA translation. ... TOP mRNAs. Moreover, immunocom- plex precipitation of La from HeLa cellular extracts yields a number of mRNAs, including TOP mRNAs, thus supporting the conclusion that La prote...
Ngày tải lên: 07/03/2014, 01:20
Báo cáo khoa học: A new and efficient method for inhibition of RNA viruses by DNA interference pptx
... virus; RHA, RNA helicase A; RISC, RNA- induced silencing complex; RNAi, RNA interference; s-DNA, short sense ssDNA; siDNA, short interfering DNA; siRNA, short interfering RNA; sRNA, small RNA; TMV, ... nucleotides TMV RNA 483–504 0 5 · 10 3 s-DNA (ssDNA) 20 nucleotides TMV RNA 390–409 0 5 · 10 3 siRNA 21 bp TMV RNA 420–440 89 4.5 · 10 3 dsRNA 284 bp TMV RNA 390–674 89 330 siDNA...
Ngày tải lên: 16/03/2014, 02:20
Báo cáo khoa học: Investigating RNA polymerase II carboxyl-terminal domain (CTD) phosphorylation ˆ Benoıt Palancade and Olivier Bensaude pptx
... domain of RNA polymerase II couples mRNA processing to transcription. Nature 385, 357–361. 87. Skaar, D.A. & Greenleaf, A.L. (2002) The RNA polymerase II CTDkinaseCTDK-Iaffectspre-mRNA-3¢ cleavage/polyade- nylation ... embryonic development. Keywords: RNA polymerase II; CTD-phosphorylation; CTD-kinase; CTD-phosphatase; transcription; mRNA processing. The C-terminal domain (CTD) of R...
Ngày tải lên: 17/03/2014, 10:20
Báo cáo khoa học: Molecular characterization of gonad-inhibiting hormone of Penaeus monodon and elucidation of its inhibitory role in vitellogenin expression by RNA interference pptx
... function by using a RNA interference (RNAi) technique. RNAi, a post-transcription gene-silencing process in which dsRNA triggers sequence-specific suppression of its cognate mRNA [21], is a powerful ... (Fig. 5B,C). By contrast, the irrelevant dsRNA, GFP-dsRNA, failed to knock- down Pem-GIH mRNA expression as the abdominal nerve cord incubated with GFP-dsRNA expressed similar levels of Pem-G...
Ngày tải lên: 23/03/2014, 07:20