Báo cáo khoa học: Mechanism of mild acid hydrolysis of galactan polysaccharides with highly ordered disaccharide repeats leading to a complete series of exclusively odd-numbered oligosaccharides doc

... 2137 Mechanism of mild acid hydrolysis of galactan polysaccharides with highly ordered disaccharide repeats leading to a complete series of exclusively odd-numbered oligosaccharides Bo Yang 1 , Guangli ... Kurosawa M, Sumi T, Xia X & Yamaguchi K (1998) A gas chromatographic method for the sugar analysis of 3,6-anhydrogalactose-contain- ing a...

Ngày tải lên: 23/03/2014, 04:21

... Introduction Creating accurate part -of- speech (POS) taggers using a tag dictionary and unlabeled data is an interesting task with practical applications. It has been explored at length in the literature ... constrain learning—prior to considering any particular lan- guage, grammar or data set. Baldridge (2008) uses this observation to create grammar-informed tag transitions for a...

Ngày tải lên: 07/03/2014, 22:20

... 275–283. 10 Kuwada M, Teramoto T, Kumagaye KY, Nakajima K, Watanabe T, Kawai T, Kawakami Y, Niidome T, Sawada K, Nishizawa Y et al. (1994) Omega-agatoxin- TK containing D-serine at position 46, but ... D-amino acid in peptide link- age by an enzyme from frog skin secretions. Proc Natl Acad Sci USA 102, 4235–4239. 33 Shikata Y, Watanabe T, Teramoto T, Inoue A, Kawakami Y, Nishizawa Y, Kata...

Ngày tải lên: 18/02/2014, 17:20

... S. aureus genomic DNA. The pET17H vector was used for the production of a His- tagged SaDHNA. The primers for the PCR were 5¢-GG AATTCCATATG CAAGACA CAAT CTTTCTT AAAG-3¢ (forward primer with a ... deprotonation and reprotonation of C2¢. The alter- native reaction can be initiated by deprotonation of C1¢ and protonation of N5 to form an enol intermedi- ate, which can turn into...

Ngày tải lên: 19/02/2014, 00:20

... decreasing pH. We were not able to measure the rate of inactivation by further decreases in pH, because other factors, such as increased autooxidation of NADH and other acid degradation of this ... experimental data, we increased the infusion rate of NADH to obtain a higher rate of production of NAD + (Table 2, osc*). Comparing the two oscillatory states (Table 2, osc and...

Ngày tải lên: 20/02/2014, 11:20

... steady-states is that the concentrations of the weak acids in the tricarboxylic acid cycle (pyruvate, citrate, a- ketogluta- rate, succinate, fumarate and malate) in the presence of benzoic acid are all ... yeasts such as Saccharomyces cerevi- siae and Zygosaccharomyces bailii, both of which are known to be important food spoilage yeasts, are able to adapt to the presence of...

Ngày tải lên: 07/03/2014, 04:20

... a ligand to enter and anchor at the respective functional sites of LAAO that may facilitate the design of suicidal inhibitors. Abbreviations LAAO, L-amino acid oxidase; NAT, N-acetyltryptophan; ... half-reaction involving the conversion of FAD (flavin cofactor) to FADH 2 and concomitant oxidation of the amino acid to an imino acid. The imino acid intermediate of the ox...

Ngày tải lên: 07/03/2014, 05:20

... TOY1 and TOY3 strains (left panel). The AtUXS3 enzyme was detectable as a 40-kDa band with a c-Myc antibody in the TOY2 and TOY3 strains (right panel). Lane 1, Control W30 3a strain; lane 2, TOY1 ... identified in A. thaliana and they can be classified into two types. AtUXS1 and AtUXS2 are type II membrane proteins localized to the Golgi. AtUXS3 lacks an N-terminal transmembrane regio...

Ngày tải lên: 07/03/2014, 12:20

... molecular mass standards. Small angle X-ray solution scattering with synchrotron radiation. Data were collected on the X33 camera of the European Molecular Biology Laboratory outstation at Hasylab at ... detail, a coupled optical assay was elaborated with alcohol dehydrogenase as auxiliary enzyme, catalysing the aldehyde–alcohol conver- sion similar to the assays established for pyr...

Ngày tải lên: 08/03/2014, 02:20

... Takayama, Ikoma, Nara 630-0101, Japan. Fax: + 81 743 72 5569, Tel.: + 81 743 72 5560, E-mail: yokota@bs.aist-nara.ac.jp Abbreviations: APX, ascorbate peroxidase; AsA, ascorbate; DHA, dehydroascorbate; ... 5¢-AGCTTGTTGGGGGTGGT GAC-3¢;P2,5¢-AATCTGTCACCACCCCCAAC-3¢;P3, 5¢-CCTTGACG GATATTTGGAGTG-3¢;P4,5¢-TGGCG ATT CTCCATTTTGCCAAAGAGTG-3¢;andP5,5¢-TG GCGATTGTCCATTTT CCCAAAGAGTG-3¢.Mutated bases ar...

Ngày tải lên: 08/03/2014, 08:20