Báo cáo khoa học: "Structure, composition chimique et retraits de maturation du bois chez les clones d’Eucalyptus" pdf

... l’exis- tence de cellules analogues à du bois de tension chez des Gymnospermes et des cellules analogues à du bois de compres- sion chez des Angiospermes (Höster et Liese, 1966 ... génétique et sylvicole, tri et classe- ment des bois abattus). Article original Structure, composition chimique et retraits de maturation du bois ch...

Ngày tải lên: 08/08/2014, 19:21

... peptide in SDS micelle with the notion that slower exchange correlates with deeper penetration into the micelle for the residue under consideration. Another method to gauge the insertion depth is ... were recorded on a Boman DA8.3 spectrometer with a KBr beamsplitter and a liquid nitrogen-cooled MCT detector according to procedures described previously [20]. Each of the studied peptides (20 ....

Ngày tải lên: 19/02/2014, 16:20

... polycarbamoylated products. The sol- vents were removed under reduced pressure; and the residue was dissolved in water and washed with ethyl acetate (3 · 25 mL). The aqueous layer was evaporated under reduced ... demonstrated complete conversion of the starting material to the desired compound. Solvents were removed under reduced pressure, and extracted three times with warm ethyl acetate. Th...

Ngày tải lên: 16/03/2014, 06:20

... ATP-dependent chro- matin remodeling enzymes: two heads are not better, just different. Curr Opin Genet Dev 18, 137–144. 25 Clapier CR & Cairns BR (2009) The biology of chro- matin remodeling ... that active gene loci decondense completely into these unfolded 10-nm diameter fibres. In reality, the eukaryotic gen- ome is assembled in a much more condensed state under physiological condition...

Ngày tải lên: 14/02/2014, 18:20

... side chain, which appears to depend on whether the mononucleotide is in the syn-conformation or anti-conformation. In RNase Sa2–3¢-GMP (anti-conformation), the side chain of Arg34 points outside ... trinucleotides with a leading guanosine (16 molecules), were constructed with module build from maestro. All ligands were prepared for docking with the help of the ligprep module, using default pa...

Ngày tải lên: 18/02/2014, 11:20

... full sequence was considered (residues 1-299), each individual domain (residues 1-144 or residues 153-299) superimposed well when considered separately (Fig. 2A,B). Residues 16–21 and 45–47 exhib- ited ... (2007) Automated structure determination of proteins with the SAIL-FLYA NMR method. Nat Protoc 2, 2896–2902. 26 Lo ´ pez-Me ´ ndez B & Gu ¨ ntert P (2006) Automated pro- tein structure...

Ngày tải lên: 18/02/2014, 14:20

... was measured by estimating (at 340 nm) the rate of NADH-dependent reduction of acetaldehyde to ethanol and NAD + catalyzed by alcohol dehydrogenase present in an excess amount in the reaction ... assays THF-dependent cleavage of l-Ser to Gly was monitored using l-[3) 14 C]-Ser and THF as substrates [34]. THF-inde- pendent aldol cleavage of l-allo-Thr to Gly and acetalde- hyde was measured ......

Ngày tải lên: 18/02/2014, 16:20

... Carlos Faro Departamento de Biologia Molecular e Biotecnologia, Centro de Neurocie ˆ ncias e Biologia Celular, Universidade de Coimbra and Departamento de Bioquı ´ mica, Faculdade de Cie ˆ ncias ... [77]. In another study phytepsin was detected during the onset of DNA fragmen- tation in germinating barley scutella [84]. During daylily petal senescence and cell death, several genes w...

Ngày tải lên: 19/02/2014, 12:20

... by blue shaded circles and single letter amino acid codes. Red circles indicate the residues that have been associated with biological activity in one or more conotoxin. White circles represent ... extended the investigation to examine the role of different disul de bond isomers in determining structures. The structures of PnIA, PnIB and the desulfated form of native EpI ([Y15]EpI) were dete...

Ngày tải lên: 19/02/2014, 12:20

... been deposited in the Protein D ata Bank and have the accession code 1FNO [15]. RESULTS Overall structure The ®nal model consists of residues M et1 ±Gly408 (see Materials and methods). All 15 methionines ... C-terminal residue 409 along with the C-terminal hexahistidine tag showed no signi®cant density at a ll. Outside t hese parts, the polypeptide chain is g enerally well de ned by the 2|F...

Ngày tải lên: 21/02/2014, 03:20