Hydrogen-bond network and pH sensitivity in transthyretin: Neutron crystal structure of human transthyretin

2012 ◽  
Vol 177 (2) ◽  
pp. 283-290 ◽  
Author(s):  
Takeshi Yokoyama ◽  
Mineyuki Mizuguchi ◽  
Yuko Nabeshima ◽  
Katsuhiro Kusaka ◽  
Taro Yamada ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Ph Sensitivity ◽  
Hydrogen Bond Network ◽  
Bond Network

(NH4)[B3PO6(OH)3]·0.5H2O

2007 ◽  
Vol 63 (11) ◽  
pp. i185-i185 ◽  
Author(s):  
Wei Liu ◽  
Jingtai Zhao
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Water Molecules ◽  
Hydrogen Bond Network ◽  
Ammonium Ions ◽  
One Dimensional ◽  
Bond Network ◽  
Solvothermal Conditions

The title compound, ammonium catena-[monoboro-monodihydrogendiborate-monohydrogenphosphate] hemihydrate, was obtained under solvothermal conditions using glycol as the solvent. The crystal structure is constructed of one-dimensional infinite borophosphate chains, which are interconnected by ammonium ions and water molecules via a complex hydrogen-bond network to form a three-dimensional structure. The water molecules of crystallization are disordered over inversion centres, and their H atoms were not located.

scholarly journals Hydrogen-bond network and pH sensitivity in human transthyretin

2013 ◽  
Vol 20 (6) ◽  
pp. 834-837 ◽  
Author(s):  
Takeshi Yokoyama ◽  
Mineyuki Mizuguchi ◽  
Yuko Nabeshima ◽  
Katsuhiro Kusaka ◽  
Taro Yamada ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Ph Sensitivity ◽  
Hydrogen Bond Network ◽  
Bond Network

scholarly journals Hydrogen-bond Network and pH Sensitivity in Transthyretin

hamon ◽  
2013 ◽  
Vol 23 (2) ◽  
pp. 142-145
Author(s):  
Takeshi Yokoyama ◽  
Mineyuki Mizuguchi ◽  
Katsuhiro Kusaka ◽  
Ichiro Tanaka ◽  
Nobuo Niimura
Keyword(s):  
Hydrogen Bond ◽  
Ph Sensitivity ◽  
Hydrogen Bond Network ◽  
Bond Network

scholarly journals Active Hydrogen Bond Network (AHBN) and Applications for Improvement of Thermal Stability and pH-Sensitivity of Pullulanase from Bacillus naganoensis

PLoS ONE ◽  
2017 ◽  
Vol 12 (1) ◽  
pp. e0169080 ◽  
Author(s):  
Qing-Yan Wang ◽  
Neng-Zhong Xie ◽  
Qi-Shi Du ◽  
Yan Qin ◽  
Jian-Xiu Li ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Hydrogen Bond ◽  
Ph Sensitivity ◽  
Hydrogen Bond Network ◽  
Active Hydrogen ◽  
Bond Network

L-2-Aminobutyric acid: two fully ordered polymorphs with Z′ = 4

2010 ◽  
Vol 66 (2) ◽  
pp. 253-259 ◽  
Author(s):  
Carl Henrik Görbitz
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Amino Acid ◽  
Diffraction Data ◽  
Aminobutyric Acid ◽  
Side Chain ◽  
Hydrogen Bond Network ◽  
Asymmetric Unit ◽  
Space Groups ◽  
Bond Network

The crystal structure of L-2-aminobutyric acid, an L-alanine analogue with an ethyl rather than a methyl side chain, has proved elusive owing to problems growing diffraction quality crystals. Good diffraction data have now been obtained for two polymorphs, in space groups P21 and I2, revealing surprisingly complex, yet fully ordered crystalline arrangements with Z′ = 4. The closely related structures are divided into hydrophilic and hydrophobic layers, the latter being the thinnest ever found for an amino acid (other than α-glycine). The hydrophobic layers furthermore contain conspicuous pseudo-centers-of-symmetry, leading to overall centrosymmetric intensity statistics. Uniquely, the four molecules in the asymmetric unit can be divided into two pairs that each forms an independent hydrogen-bond network.

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