aqueous solution behavior of the starch polysaccharides

... one-turn helix on the other face It is thought that the two inner strands of the b-sheet lie within the major groove of the DNA and that a hydrophobic pocket formed by the side chains of Y123 and I125 ... [18] The structure of the helical coil a2/a3 allows us to interpret the consequences of the six mutations As P153(152) and G162(161) are buried in the protein core, replacement of each of these ... cluster in these two regions Knowledge of the structure of a larger portion of MeCP2 including the transcriptional repression domain would resolve these speculations and clarify the role of the helical...

Ngày tải lên: 21/02/2014, 00:20

... mobility with respect to the rest of the structure Further studies of the receptor bound forms of the chimera and other related ligands will be necessary to define the nature of the interactions leading ... Several of these were identified in previous studies of EGF, and the backbone fold of the chimera is clearly similar to those of the EGF structures The presence of a backbone hydrogen bond from the ... interrupted by the presence of two proline residues, in which cases the following NOEs were observed: Ha/Hb of the previous residue to the Pro H* and NH of the following residue to the Pro Ha/Hb The assignments...

Ngày tải lên: 22/02/2014, 07:20

... (B) Representation of flexibility in the solution structure of the RICH catalytic domain The width of the sausage is reversely proportional to the heteronuclear NOE values The figure was generated ... FEBS 1601 Solution structure of the RICH catalytic domain G Kozlov et al Results Structure of the RICH catalytic domain We determined the structure of the 24 kDa catalytic fragment of goldfish ... helical fragments group together in the vicinity of the N-terminus This helical patch is the most basic part of the molecule and a potential interaction surface for the preceding acidic N-terminal...

Ngày tải lên: 07/03/2014, 10:20

... establish the preferred geometry of the precursor We now report the chemical synthesis, biochemical production, and solution structure of preCbnB2, and compare it with the structure of the mature ... help determine the structural basis of the inhibition of the antimicrobial activity of CbnB2 by the leader and to assist future analysis of the interaction of preCbnB2 with its ABC transporter ... for cleavage of the leader peptide after the double glycine motif [16,17] This cleavage occurs on the cytoplasmic side of the membrane during export of the bioactive peptide [18] The leader peptide...

Ngày tải lên: 07/03/2014, 15:20

... ensemble of HPr(I14A) The average structure of the 10 lowest-energy structures out of 300 calculated with CNS is shown The radius of the spline reflects the RMSD values of the Ca atom positions The ... atoms of Ala19 In addition, the C-terminus folds back onto the core of the protein thereby allowing the side chain of Leu86 to partly fill the hole created by the removal of Ile14 Due to these ... computed as the ratio of the standard deviations of the chemical shifts of the amide nitrogen and proton nuclei Results Determination of the three-dimensional structure of HPr(I14A) To allow the comparison...

Ngày tải lên: 07/03/2014, 16:20

... either the LPS core structure or/and in the mode of the attachment of the OPS to the core Therefore, strains of pathovar porri are clearly distinct from other P syringae pathovars in serology of ... and the similarity of the C2-C6 chemical shifts of the GlcNAc residue to those of nonsubstituted b-GlcNAc [32] These data showed that the major O repeat of the OPS has structure 2: each other ... (Table 1) The OPS of chemotypes 3C, 8C and 9C differ from each other in the site of the attachment of b-D-GlcNAc residues to the main L-rhamnan chain (Table 4) The OPS of P syringae pv atrofaciens...

Ngày tải lên: 08/03/2014, 08:20

... some light on the steps involved in the fibrillogenesis, but, most of all, to evaluate the role of Ab-(1–42) in the interaction with the membrane The structure of Ab-(1–42) found in aqueous hexafluoroisopropanol, ... Furthermore, the Ab-(1–42) solution in aqueous HFIP was very stable, as there was no evidence of aggregation or precipitation and the NMR spectra did not change over several weeks The quality of ... to those of the lipid phase of the membrane, which promotes the formation of short-range H-bonds inducing helical structures The structural characterization of a monomeric, soluble form of Ab-(1–42)...

Ngày tải lên: 08/03/2014, 09:20

... elbowÕ of C5 is located at the upper left corner of the figure when C5 is in the presence of the cosolvents trifluoroethanol or hexafluoroisopropanol The high-resolution solution structure of HIV ... nonhydrogen) of the ensemble to the ˚ mean is 1.25 A In Fig 4B, the backbone RMSD of the C5 ensemble is plotted as a function of residue number to illustrate the relative uncertainties of the backbone ... map of the minimized mean structure of HIV gp120 C5 (A) The location of the furin/PC7 site is shown The locations of the missing gp120 domains and gp41 are denoted (B) In this orientation, the...

Ngày tải lên: 08/03/2014, 16:20

... mm of monomers at 30 °C Most of the 1H-15N HSQC signals of the dimeric form of PDI-bb¢ coincide with the signals of the monomeric form or are weak as a result of the high molecular weight of the ... structure, the catalytic cysteines face each other; in the other, the catalytic residues of the a domain face away from the a¢ domain The crystal structures also revealed the presence of a hydrophobic ... Superimposition of the solution structure of the human PDI-b¢ (blue) with the crystal structure of yeast PDI-b¢ (red, Protein Data Bank entry code 2B5E) (C) Superimposition of the solution structure of human...

Ngày tải lên: 16/03/2014, 04:20

... helices and of P16 (Fig 1) Helices 5002 Fig Stereo views of the solution and crystal structures of DnaG-C (A) Superposition of the backbone atoms of residues 447–581 of the 20 NMR conformers of DnaG-C ... resolve these difficulties and the discrepancies between the structure of P16 (which is monomeric in solution) and the different conformers in the crystal structure of DnaG-C, we here report the solution ... stearothermophilus DnaB confirmed the importance of residues in these parts of the protein [3,16] Unlike in the wildtype protein, the individual N-terminal and C-terminal domains of B stearothermophilus...

Ngày tải lên: 16/03/2014, 12:20

... of GalA GLC analyses of the acetylated (S)-2-(+)-butyl glycosides demonstrated the d configuration of Glc, GlcN, GalN, and GalA The d configuration of Qui3N was established by the analysis of the ... Proteus [16] Studies of the O -polysaccharides of Proteus genomospecies and and the comparison of the corresponding 13C NMR spectra indicated that they are identical to those of P vulgaris O8 [17] ... Proteus genomospecies Fig Part of a 2D ROESY spectrum of the polysaccharide of Proteus genomospecies The corresponding parts of the 1H-NMR spectrum are displayed along the axes Arabic numerals refer...

Ngày tải lên: 16/03/2014, 23:20

... though they use the Internet at libraries 22% of adults 65 and older have access to the Internet Of the 22% of the US adults aged 65 and over using the Internet, it is estimated that 66% use the ... was one of the most popular past-times of the elderly interviewed in his study The majority of them used the library to rent books, audio, videos and participate in library programs If the elderly ... time they have with their doctor count Complicating the results of other studies that indicate the elderly prefer communication with their doctors to gather medical information, the Gladden study...

Ngày tải lên: 22/03/2014, 14:20

... with the large size of the cavity easily allowing substrate entry However, the side chains of residues Tyr988 and Lys987 of the second molecule of the ‘dimer’ clash with the region where the adenosyl ... that either: (1) the concentration of the dimer species under crosslinking conditions is very small; (2) the location of the N-terminus in solution is not consistent with models of the dimer (the ... represents the change in fluorescence intensity, F0 is the measure of the fluorescence intensity in the absence of the activation domain, E0 is the concentration of the FMN domain, L denotes the concentration...

Ngày tải lên: 23/03/2014, 09:21

... understanding of the characteristics of this peptidase, which would be of industrial use in the debittering of fermented foods Results and Discussion Cloning and expression of Lc lactis prolidase The prolidase ... activity was seen in the presence of manganese Moreover, the preference for dipeptide changed from Leu-Pro to Arg-Pro in the presence of manganese A comparison of the crystal structure of P furiosus ... is the length of the loop structure that is contributed by the other subunit and covers the S1 site (yellow ribbon for P furiosus and cyan ribbon for Lc lactis in Fig 5) The crystal structure of...

Ngày tải lên: 30/03/2014, 04:20

... investigated the behavior of the solutions, HAE-M found the solutions of the special cases and EMEls carried out the theoretical proof and gave the examples All authors read and approved the final ... investigated the behavior of the solution of difference equations for example: Elabbasy et al [5] investigated the global stability, periodicity character and gave the solution of special case of the ... and rewarding, and the results about these equations offer prototypes towards the development of the basic theory of the global behavior of nonlinear difference equations of a big order, recently,...

Ngày tải lên: 21/06/2014, 00:20

... , the bifurcation structure of the nodal solutions of 1.8 , 1.9 becomes more complicated: the component of the solutions of 1.8 , 1.9 from the trivial solution at λk /f0 , and the component of ... 1.9 , and use the global bifurcation theorems from Section to analyze the global behavior of the components of nodal solutions of 1.8 , 1.9 Preliminary definitions and eigenvalues of corresponding ... Let (H0) and 3.6 hold If μ, u ∈ E is a nontrivial solution of 3.3 , then u ∈ Tk for some k, ν Proof The proof of Lemma 3.6 is similar to the proof of Lemma 3.1 omit it 4, Proposition 4.1 ; we ν...

Ngày tải lên: 22/06/2014, 06:20

... completes the proof of the proposition Behavior of the positive solutions of fuzzy equation (1.1) In this section, we study the behavior of the positive solutions of (1.1) Firstly, we study the periodicity ... order to study the behavior of a parametric fuzzy difference equation we use the following technique: we investigate the behavior of the solutions of a related family of systems of two parametric ... Existence and uniqueness of the positive solutions of fuzzy difference equations (1.1) and (1.2) In this section, we study the existence and the uniqueness of the positive solutions of the fuzzy difference...

Ngày tải lên: 23/06/2014, 00:20

... bounded, then the height distribution Derivation of Results We establish the five parts of Theorem Since the analysis involves a routine use of the saddle point method (cf [1, 12]), we only give the ... for large b (cf Theorem 2) The proof is delayed until Section It is based on an asymptotic evaluation of a certain integral Summary of Results We let Hn be the height of a b-trie of size n We denote ... better understood by viewing the problem as first fixing k and b, and then varying n (cf Section 4) Theorem For b → ∞ the distribution of the height of b-tries has the following asymptotic expansions:...

Ngày tải lên: 07/08/2014, 06:20

... then yields the result 3.2 (λ([0, x])(1 − λ([0, x])))p/2 The proof of Theorem Proof The proof is completely analogous to the proof of Theorem 1, due to the fact that the entire structure of the ... |g(a) − g(b)| dadb The result then follows from Theorem and ess sup0 3.5 x ∗ |g(x)| = DN (P) The proof of Theorem P Proof We go back to our definition of DN as the expected value of the random variable ... suitable decompositions of the unit cube (i.e bounds on the volume of the set A from the proof) The second way seems to lead to a very technical path while the first way seems to be the more manageable...

Ngày tải lên: 08/08/2014, 12:22

... investigate the behavior of the Lannes-Zarati homomorphism in the ranks five and six The vanishing of the fifth Lannes-Zarati homomorphism is given in the following theorem Theorem 5.1 The homomorphism ... other words, the diagram Exts,t A (F2 , F2 ) Sq ϕs  P Rs / Exts,2t (F2 , F2 ) A ϕs Sq  / P Rs commutes The detail description of the action of Sq i s on the dual of the Dickson algebra and the ... Then the Dyer-Lashof algebra is defined as the quotient of lambda algebra by the two-sided ideal generated by all monomials of negative excess / R A Denote by Qi is the image of λi through the...

Ngày tải lên: 16/10/2015, 09:20