Three-dimensional structure of main-chain liquid-crystalline copolymers. 3. Chain packing in the solid state

1988 ◽  
Vol 21 (11) ◽  
pp. 3158-3164 ◽  
Author(s):  
Amit Biswas ◽  
John Blackwell
Keyword(s):  
Solid State ◽  
Liquid Crystalline ◽  
Main Chain ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Chain Packing ◽  
Three Dimensional Structure

scholarly journals Three-dimensional structure of a variant `Termamyl-like'Geobacillus stearothermophilusα-amylase at 1.9 Å resolution

2015 ◽  
Vol 71 (1) ◽  
pp. 66-70 ◽  
Author(s):  
Wendy A. Offen ◽  
Anders Viksoe-Nielsen ◽  
Torben V. Borchert ◽  
Keith S. Wilson ◽  
Gideon J. Davies
Keyword(s):  
Steam Explosion ◽  
First Generation ◽  
Main Chain ◽  
Crystal Packing ◽  
Three Dimensional ◽  
Glycoside Hydrolases ◽  
Industrial Processes ◽  
Dimensional Structure ◽  
Geobacillus Stearothermophilus ◽  
Three Dimensional Structure

The enzyme-catalysed degradation of starch is central to many industrial processes, including sugar manufacture and first-generation biofuels. Classical biotechnological platforms involve steam explosion of starch followed by the action of endo-acting glycoside hydrolases termed α-amylases and then exo-acting α-glucosidases (glucoamylases) to yield glucose, which is subsequently processed. A key enzymatic player in this pipeline is the `Termamyl' class of bacterial α-amylases and designed/evolved variants thereof. Here, the three-dimensional structure of one such Termamyl α-amylase variant based upon the parentGeobacillus stearothermophilusα-amylase is presented. The structure has been solved at 1.9 Å resolution, revealing the classical three-domain fold stabilized by Ca2+and a Ca2+–Na+–Ca2+triad. As expected, the structure is similar to theG. stearothermophilusα-amylase but with main-chain deviations of up to 3 Å in some regions, reflecting both the mutations and differing crystal-packing environments.

The effect of three-dimensional structure on the solid state isotope exchange of hydrogen in polypeptides with spillover hydrogen

2003 ◽  
Vol 31 (6) ◽  
pp. 453-463 ◽  
Author(s):  
Yu.A. Zolotarev ◽  
A.K. Dadayan ◽  
Yu.A. Borisov ◽  
E.M. Dorokhova ◽  
V.S. Kozik ◽  
...  
Keyword(s):  
Solid State ◽  
Isotope Exchange ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Three Dimensional Structure ◽  
Spillover Hydrogen

scholarly journals Synthèse et structure cristalline d'un matériau noir AgMnII3(MnIII0,26Al0,74)(MoO4)5

2015 ◽  
Vol 71 (3) ◽  
pp. 299-304 ◽  
Author(s):  
Chahira Bouzidi ◽  
Wafa Frigui ◽  
Mohamed Faouzi Zid
Keyword(s):  
Solid State ◽  
Title Compound ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Structural Description ◽  
Inversion Symmetry ◽  
Three Dimensional Structure

A new silver aluminium trimanganese pentamolybdate {silver(I) trimanganese(II) aluminium pentakis[tetraoxidomolybdate(VI)]}, AgMnII3(MnIII0,26Al0,74)(MoO4)5, has been synthesized using solid-state methods. The structure is composed ofM2O10dimers,M3O14(M= Mn, Al) trimers and MoO4tetrahedra sharing corners and forming three types of layersA,BandB′. The sequence of the constituting layers isA–BB′–A–BB′, withB′ obtained fromBby inversion symmetry, forming a three-dimensional structure with large channels in which the positionally disordered and partially occupied Ag+ions reside. The MnIIIand AlIIIatoms share the same site,M. AgMnII3(MnIII0,26Al0,74)(MoO4)5is isotypic with the NaMg3X(MoO4)5(X= Al, In) family and with NaFe4(MoO4)5. A comparative structural description is provided between the structure of the title compound and those of related phases containing dimers, trimers and tetramers.

scholarly journals Atomic-Resolution Three-Dimensional Structure of HET-s(218−289) Amyloid Fibrils by Solid-State NMR Spectroscopy

2010 ◽  
Vol 132 (39) ◽  
pp. 13765-13775 ◽  
Author(s):  
Hélène Van Melckebeke ◽  
Christian Wasmer ◽  
Adam Lange ◽  
Eiso AB ◽  
Antoine Loquet ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Solid State Nmr ◽  
Amyloid Fibrils ◽  
Three Dimensional ◽  
Atomic Resolution ◽  
Dimensional Structure ◽  
Solid State Nmr Spectroscopy ◽  
Three Dimensional Structure
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