共查询到20条相似文献,搜索用时 15 毫秒
1.
《Cell cycle (Georgetown, Tex.)》2013,12(7):1023-1024
Comment on: Boehler C, et al. Proc Natl Acad Sci USA 2011; 108:2783-8. 相似文献
2.
Horizontal gene transfer in microbial genome evolution 总被引:1,自引:0,他引:1
Horizontal gene transfer is the collective name for processes that permit the exchange of DNA among organisms of different species. Only recently has it been recognized as a significant contribution to inter-organismal gene exchange. Traditionally, it was thought that microorganisms evolved clonally, passing genes from mother to daughter cells with little or no exchange of DNA among diverse species. Studies of microbial genomes, however, have shown that genomes contain genes that are closely related to a number of different prokaryotes, sometimes to phylogenetically very distantly related ones. (Doolittle et al., 1990, J. Mol. Evol. 31, 383-388; Karlin et al., 1997, J. Bacteriol. 179, 3899-3913; Karlin et al., 1998, Annu. Rev. Genet. 32, 185-225; Lawrence and Ochman, 1998, Proc. Natl. Acad. Sci. USA 95, 9413-9417; Rivera et al., 1998, Proc. Natl. Acad. Sci. USA 95, 6239-6244; Campbell, 2000, Theor. Popul. Biol. 57 71-77; Doolittle, 2000, Sci. Am. 282, 90-95; Ochman and Jones, 2000, Embo. J. 19, 6637-6643; Boucher et al. 2001, Curr. Opin., Microbiol. 4, 285-289; Wang et al., 2001, Mol. Biol. Evol. 18, 792-800). Whereas prokaryotic and eukaryotic evolution was once reconstructed from a single 16S ribosomal RNA (rRNA) gene, the analysis of complete genomes is beginning to yield a different picture of microbial evolution, one that is wrought with the lateral movement of genes across vast phylogenetic distances. (Lane et al., 1988, Methods Enzymol. 167, 138-144; Lake and Rivera, 1996, Proc. Natl. Acad. Sci. USA 91, 2880-2881; Lake et al., 1999, Science 283, 2027-2028). 相似文献
3.
《Cell cycle (Georgetown, Tex.)》2013,12(11)
Comment on: Münch C, et al. Proc Natl Acad Sci USA 2011; 108:3548-53. 相似文献
4.
《Cell cycle (Georgetown, Tex.)》2013,12(16):2961-2962
Comment on: Vicente-Dueñas C, et al. Proc Natl Acad Sci USA 2012; 109:10534-9. 相似文献
5.
The nonexponential closed-time distributions observed for ionic channels have been explained recently by quasi-one-dimensional models of structural diffusion (Millhauser, G. L., E. E. Salpeter, and R. E. Oswald. 1988. Proc. Natl. Acad. Sci. USA. 85: 1503-1507; Condat, C. A., and J. J?ckle. 1989. Biophys. J. 55: 915-925; Levitt, D. G. 1989. Biophys. J. 55: 489-498). We generalize this treatment by allowing for more complex trajectories using percolation theory. We assume that the gating transition depends on marginally connected conformational states leading to the observed spread in time scales. 相似文献
6.
Yang Xu Huirong Yang Heui-Yun Joo Jei-Hwa Yu Archer D Smith IV David Schneider Louise T Chow Matthew Renfrow Hengbin Wang 《Cell cycle (Georgetown, Tex.)》2013,12(19):3219-3220
Comment on: Portal MM. Proc Natl Acad Sci USA 2011; 108:8686-91. 相似文献
7.
8.
The protein-tyrosine kinase substrate p36 is also a substrate for protein kinase C in vitro and in vivo. 总被引:21,自引:3,他引:18 下载免费PDF全文
p36, a major in vivo substrate of protein-tyrosine kinases, is shown to be phosphorylated at serine 25, a site very close to the major site of tyrosine phosphorylation by pp60v-src, tyrosine 23 (J. R. Glenney, Jr., and B. F. Tack, Proc. Natl. Acad. Sci. USA 82:7884-7888, 1985). We present evidence suggesting that protein kinase C mediates phosphorylation of serine 25. 相似文献
9.
Diamino carboxylic acids have recently come to the attention of scientists working in the field of early life and its development. These are the monomers of a hypothetic early form of genetic material, the so-called Peptide Nucleic Acid (PNA) (Nielson et al., Proc Natl Acad Sci USA 2000;97:3868-3871). Since all biopolymers rely on a specific handedness of their building blocks, the question of symmetry breaking occurs in diamino acids and PNA in the same way as in amino acids and proteins. One possible mechanism for triggering this, is asymmetric photochemistry in interstellar/circumstellar matter by means of circularly polarized light (Bailey et al., Science 2005;281:672-674; Bailey, Orig Life Evol Biosphere 2001;21:167-183; Buscherm?hle, Astrophys J 2005;624:821-826; Meierhenrich, Angew Chem Int Ed Engl 2005;44:5630-5634). Here we have measured the CD-spectra of four chiral diamino carboxylic acids, three of which were found in the Murchison meteorite (Meierhenrich, Proc Natl Acad Sci USA 2004;101:9182-9186). The spectra show a uniform peak at 200 nm. These results and additional quantum mechanical calculations of the involved molecular orbitals support the assumption that the process of symmetry breaking in diamino acids does not depend significantly on the length of the side chain. This means that one process alone could suffice to lead to symmetry breaking in all four measured diamino carboxylic acids and might even to some extent be transferable to monoamino acids, the monomers of proteins. 相似文献
10.
《Cell cycle (Georgetown, Tex.)》2013,12(20):3423-3424
Comment on: Kuraoka M, et al. Proc Natl Acad Sci USA 2011; 108:11560-5 相似文献
11.
《Cell cycle (Georgetown, Tex.)》2013,12(21):3617-3618
Comment on: Henderson A, et al. Proc Natl Acad Sci USA 2011; 108:6415-9. 相似文献
12.
《Cell cycle (Georgetown, Tex.)》2013,12(3):366-367
Comment on: Tran HT, et al. Proc Natl Acad Sci USA 2010; 107:16160-5. 相似文献
13.
《Cell cycle (Georgetown, Tex.)》2013,12(20):3411-3412
Comment on : Park JE, et al. Proc Natl Acad Sci USA 2011; 108:8200-05. 相似文献
14.
《Cell cycle (Georgetown, Tex.)》2013,12(23):3794-3795
Comment on: Rhodes DR, et al. Proc Natl Acad Sci USA 2009; 106:10284-9. 相似文献
15.
《Cell cycle (Georgetown, Tex.)》2013,12(4):632-633
Comment on: Mo M, et al. Proc Natl Acad Sci USA 2009; 106:19527-32. 相似文献
16.
《Cell cycle (Georgetown, Tex.)》2013,12(18):3343-3344
Comment on: Li F, et al. Proc Natl Acad Sci USA 2012; 109:10966-71. 相似文献
17.
《Cell cycle (Georgetown, Tex.)》2013,12(16):2967-2968
Comment on: Morin JA, et al. Proc Natl Acad Sci USA 2012; 109:8115-20. 相似文献
18.
Bethann N. Johnson Rakshita A. Charan Matthew J. LaVoie 《Cell cycle (Georgetown, Tex.)》2012,11(15):2775-2776
Comment on: Johnson BN, et al. Proc Natl Acad Sci USA 2012; 109:6283-8. 相似文献
19.
《Cell cycle (Georgetown, Tex.)》2013,12(17):3143-3144
Comment on: Cowell IG, et al. Proc Natl Acad Sci USA 2012; 109:8989-94. 相似文献
20.
《Cell cycle (Georgetown, Tex.)》2013,12(9):1671-1672
Comment on: Eelderink-Chen Z, et al. Proc Natl Acad Sci USA 2010; 107:2043-7. 相似文献