Nucleus

- Cytosol, môi trường lỏng bên trong tế bào bao gồm dịch tế bào và các bào quan hiện diện. - Chức năng chính của cytosol: môi trường hoạt động của tế bào, các phản ứng sinh học diễn ra trong cytosol cũng như hiện diện của hệ thống enzym nội bào. Nhân, (nucleus - trung tâm kiểm soát tế bào), bảo quản vật chất di truyền. Sự hiện diện của nhân con (nuleolus) bên trong nhân giúp sinh tổng hợp các hạt ribosome....

39p bichtram1910 22-05-2012 275 27   Download

Basic Cell Biology I. Cytoplasm A. Plasma membrane B. Mitochondria C. Ribosomes D. Endoplasmic reticulum 1. Rough 2. Smooth E. Golgi apparatus F. Lysosomes G. Cytoskeleton II. Nucleus A. Nuclear Envelope B. Chromatin C. Nucleolus D. Nuclear matrix III. Cell division .© 2002 by Bruce Alberts, Alexander Johnson, Julian Lewis, Martin Raff, Keith Roberts, and Peter Walter. .Asymmetrical arrangement of phospholipids in plasma membrane ATP-dependent phospholipid translocase .Molecular Cell Biology, Lodish et al., 4th edition. .Figure 2—1.

68p whitedaisy1010 26-02-2013 63 12   Download

Nhân tế bào là bào quan tối quan trọng trong tế bào sinh vật nhân chuẩn. Nó chứa các nhiễm sắc thể của tế bào, là nơi diễn ra quá trình nhân đôi DNA và tổng hợp RNA.

76p ktouch_12 25-06-2013 58 5   Download

As charge-neutral particles, neutrons can only interact via strong interactions and ionize via secondary reactions. Most neutron detectors consist of a material that converts neutrons into charged particles within a conventional radiation detector

33p giotletinh_hd2009 18-09-2013 48 6   Download

Tài liệu này hướng dẫn cách phục hồi dữ liệu do xóa nhầm, “ghost” nhầm, hay bị “format” một cách vô ý. Nội dung tài liệu gồm có 2 phần: Phần 1 - Những điều cần phải nắm khi xảy ra các lỗi gây mất mát dữ liệu; phần 2 - Sử dụng những phần mềm chuyên dụng phù hợp để khôi phục dữ liệu, khôi phục toàn bộ, khôi phục từng phần. Mời các bạn tham khảo.

28p nhanmotchut_3 20-10-2016 135 7   Download

Researching this topic and thesis aims to: Describe to clarify the characteristics of the agentives and the objectives in relation to the semantic nucleus. Indicate the role of the objects agentives and objectives to the realization of the types of things, the realization of the meaning of the predicates in the situation.

28p tunelove 10-06-2021 25 3   Download

Researching this topic and thesis aims to: Describe to clarify the characteristics of the agentives and the objectives in relation to the semantic nucleus. Indicate the role of the objects agentives and objectives to the realization of the types of things, the realization of the meaning of the predicates in the situation.

28p thebadguys 10-06-2021 18 3   Download

Methodology dialectical materialism is a philosophy department-specific knowledge, the nucleus is drawn from the entire Marxist - Leninist, including the perspective system, how the principles and measures for directing cognitive activities and practice of the subject.

27p change01 05-05-2016 40 6   Download

Vì sao dữ liệu xóa đi rồi mà bạn còn có thể cứu dữ liệu lại? Nhiều bạn hỏi mình câu này. Đó là vì nếu xóa dữ liệu theo cách thông thường (cho vào thùng rác rồi empty hay bấm Shirft + Delete), thì dữ liệu chưa bị xóa di khỏi đĩa cứng đâu, đơn giản chỉ là vùng dữ liệu đó được "đánh dấu" là đã xóa, để cho phép ghi đè dữ liệu khác lên trên. Thật bất ngờ, một phần mềm không mấy đình đám, nhưng kết quả lại cực kỳ khả quan với các bước...

3p coca278 23-08-2013 113 6   Download

A system such as a nucleus may consist of many particles coupled together so that in any given state, the nucleus possesses a total magnetic moment  and a total angular momentum J. Two vectors may be taken as parallel.

14p sakuraphuong 03-06-2013 54 3   Download

Nuclear receptors (NRs) are ligand-regulated, DNA-binding transcription factors that function in the chromatin environment of the nucleus to alter the expression of subsets of hormone-responsive genes. It is clear that chromatin, rather than being a passive player, has a profound effect on both transcriptional repression and activation mediated by NRs.

9p research12 01-06-2013 32 2   Download

To gain insight in the subcellular localization of tumor necrosis factor receptor-associated factor (TRAF4) we analyzed GFP chimeras of full-length TRAF4 and various deletionmutants derived thereof.While TRAF4–GFP (T4– GFP) was clearlylocalized in the cytoplasm, the N-terminal deletion mutant, T4(259–470), comprising the TRAF domain of the molecule, and a C-terminal deletion mutant consisting mainlyof the RING and zinc finger domains of TRAF4 were both localized predominantlyto the nucleus....

11p research12 29-04-2013 51 4   Download

Na + /K + -ATPase as an energy transducing ion pump has beenstudiedextensivelysince itsdiscovery in1957.Although early findings suggested a role for Na + /K + -ATPase in regulation of cell growth and expression of various genes, only in recent years the mechanisms through which this plasma membrane enzyme communicates with the nucleus have been studied.

6p research12 29-04-2013 34 4   Download

The nonphotosynthetic mutant ofArabidopsis hcf152is impaired in the processing of the chloroplast polycistronic transcript, psbB-psbT-psbH-petB-petD, resulting in non-production of the essential photosynthetic cytochromeb6 f complex. The nucleus-encodedHCF152gene was identified to encode a pentatricopeptide repeat (PPR) protein com-posed primarily of 12 PPR motifs, similar to other proteins of this family that were identified in mutants defected in chloroplast gene expression.

12p tumor12 20-04-2013 33 2   Download

Increasing evidence suggests that melatonin can exert some effect at nuclear level. Previous experiments using binding techniques clearly showed the existence of specificmelatonin binding sites in cell nucleus of rat liver. To further identify these sites, nuclear extracts fromrathepatocyteswere treated withdifferent percentages of ammoniumsulfate andpurified by affinity chromatography. Subsequent ligandblot analysis shows the presence of two polypeptides of
60 and
74 kDa that bind specifically to melatonin. ...

9p tumor12 20-04-2013 57 2   Download

Most of the examples of protein translocation across a membrane (such as the import of classical secretory proteins into the endoplasmic reticulum, import of proteins into mitochondria and peroxisomes, as well as protein import into and export from the nucleus), are understood in great detail.

11p fptmusic 16-04-2013 41 4   Download

Phylogenetic evidence is presented that primitively amito-chondriate eukaryotes containing the nucleus, cytoskele-ton, and endomembrane system may have never existed. Instead, the primary host for the mitochondrial progeni-tor may have been a chimeric prokaryote, created by fusion between an archaebacterium and a eubacterium, in which eubacterial energy metabolism (glycolysis and fermentation) was retained.

20p fptmusic 16-04-2013 37 4   Download

The ciliated protozoanTetrahymenahas a unique apoptosis-like process, which is called programmed nuclear death (PND). During conjugation, the new germinal micro- and somatic macro-nuclei differentiate from a zygotic fertilized nucleus, whereas the old parental macronucleus degenerates, ensuring that only the new macronucleus is responsible for expression of the progeny genotype.

10p fptmusic 12-04-2013 31 1   Download

Heterogeneous nuclear ribonucleoprotein (hnRNP) D⁄AUF1 functions in mRNA genesis in the nucleus and modulates mRNA decay in the cyto-plasm. Although it is primarily nuclear, it shuttles between the nucleus and cytoplasm. We studied the nuclear import and export of the last exon-enco-ding sequence common to all its isoforms by its expression as a green fluor-escent protein-fusion protein in HeLa cells and by heterokaryon assay.

13p fptmusic 11-04-2013 38 2   Download

The multisubstrate nucleoside kinase of Drosophila melanogaster(Dm-dNK) can be expressed in human solid tumor cells and its unique enzymatic properties makes this enzyme a suicide gene candidate. In the present study,Dm-dNK was stably expressed in the CCRF-CEM and H9 T-lymphoblastoid cell lines. The expressed enzyme was localized to the cell nucleus and the enzyme retained its activity.

11p fptmusic 11-04-2013 41 2   Download