Báo cáo sinh học: "Structural evolution of GeMn/Ge superlattices grown by molecular beam epitaxy under different growth " pot

... reactives were removed by evaporation in a stream of air and the mixture of peracetylated derivatives analysed by GC-MS. Absolute configurations were deduced by analysis of the chiral 2-octyl derivatives ... traces of only terminal arabinofuranose residue were detected as well, the integration of this signal, compared with that of the 3-linked derivative, led to an approximat...

Ngày tải lên: 24/03/2014, 04:21

... character- ization of lactoferrin aggregation and amyloid forma- tion. Biochemistry 42, 375–382. 32 Byler DM & Susi H (1986) Examination of the second- ary structure of proteins by deconvolved ... peptide concentration) of SDS, indicating that the equilibrium between nomomers and oligomers remains. We find that the amount of oligomers formed is enhanced by the addition of m...

Ngày tải lên: 18/02/2014, 04:20

... case of TIMs from Plasmodium and yeast. Interestingly, the thioether group of M103 is positioned to make a potentially stabilizing contact with the guanidinium group of R99 (equivalent to R98 of ... yeast TIM). The shortest distance from the sulfur atom of M103 to the NH1 nitrogen of the guanidium group of R99 is 3.23 A ˚ , suggestive of a potentially stabilizing S-H-N interac...

Ngày tải lên: 18/02/2014, 11:20

... TMP. Inhi- bition of thymidine production is a major aspect of the activity of TMP, and inclusion of thymidine in the media allows bacterial growth regardless of the amount of TMP present. This ... when examination of the means by which an enzyme becomes resistant to an antagonist furthers our understanding of the functionality of the enzyme itself. However, the study o...

Ngày tải lên: 19/02/2014, 02:20

... tensor of the molecule. Upon binding of peptide ligands, calmodulin undergoes a dramatic alteration in structure marked by changes in the relative orientations of its eight a-helical elements. Different ... 1.2 molar ratio of Ca 2+ ⁄ CaM to PhK5 had been reached. The inset shows an expanded view of the indi- cated area of the spectrum. (Bottom) An overlay of spectra from the...

Ngày tải lên: 19/02/2014, 17:20

... classification of the weak suffixes by degree of weakness as a means of approaching the suffix-in- context problem. Table 2, which reviews the prefixes and suffixes de- fined by Resnikoff and Dolby, ... Definition of Affixes from Multisyllable Words by Lois L. Earl,* Lockheed Missiles and Space Company, Palo Alto, California In a recent paper by H. L. Resnikoff and J. L. D...

Ngày tải lên: 19/02/2014, 19:20

... inactivated by digestion with an equimolar amount of trypsin. DISCUSSION The structural determinants of autolysis and autolytic inactivation of rat D-chymotrypsin (a propeptide deficient variant of the ... formation of cleavage fragments during the digestion of D-chymotrypsinogen and its mutants by D-chymotrypsin (Fig. 3B), the order and speed of cleavages are as follows: the...

Ngày tải lên: 22/02/2014, 07:20

... lipopeptides was analyzed by MALDI-TOF MS ⁄ MS. Asterisks indicate molecular ion peaks generated by the neutral loss of diacylthioglycerol. (B) Lipopeptides used in (A) were oxi- dized by spotting hydrogen ... the N-terminal lipopeptide of SitC in the presence of n-decyl-b-D-glucopyranoside, followed by chloro- form ⁄ methanol extraction. Figure 1A shows MALDI- TOF MS of the...

Ngày tải lên: 06/03/2014, 01:20

... strength of 11.7 T [37]. These results (together with those of the R 2 described above) suggest a high flexibility of the whole backbone of CACW40A; interestingly, a study of dynamics of the C-terminal region ... capsid protein of HIV-1 (p24); CAC, C-terminal domain of CA, comprising residues 146–231 of the intact protein; CACW40A, mutant of CAC with Ala instead of Trp at...

Ngày tải lên: 07/03/2014, 06:20

... was observed and identified by the mass increase of 42 mass units. The relative level of acetylation of a peptide was estimated on the basis of the intensity ratio of the native and acetylated ... compound. Quantitative analysis of components was performed by integration of the multiple charged ions of the single species. For protein analysis, the separation was attained wi...

Ngày tải lên: 07/03/2014, 14:20