Functional and structural characterization of a protein based on analysis of its hydrogen bonding network by hydrogen bonding plot

2007 ◽  
Vol 461 (2) ◽  
pp. 225-234 ◽  
Author(s):  
Zsolt Bikadi ◽  
Laszlo Demko ◽  
Eszter Hazai
2000 ◽  
Vol 104 (38) ◽  
pp. 8649-8659 ◽  
Author(s):  
Masaaki Mitsui ◽  
Yasuhiro Ohshima ◽  
Shun-ichi Ishiuchi ◽  
Makoto Sakai ◽  
Masaaki Fujii

2018 ◽  
Vol 74 (11) ◽  
pp. 1295-1299 ◽  
Author(s):  
Sho Kuwajima ◽  
Yuta Arai ◽  
Hiromasa Kitajima ◽  
Yuji Kikukawa ◽  
Yoshihito Hayashi

By the reaction of ammonium perchlorate with anion-incorporated bowl-type dodecavanadates, viz. [V12O32(X)]5− [X = N3 − (1), OCN− and NO3 −], tube-type tetradecavanadates, viz. (NH4)7[V14O38(X)] [X = N3 − (2), OCN− (3) and NO3 − (4)] were synthesized. The crystal structures of penta(tetraethylammonium) azidododecavanadate nitromethane monosolvate, (C8H20N)5[V12O32(N3)]·CH3NO2, 1, heptaammonium azidotetradecavanadate dimethyl sulfoxide hexasolvate, (NH4)7[V14O38(N3)]·6C2H6OS, 2, heptaammonium cyanatotetradecavanadate dimethyl sulfoxide hexasolvate, (NH4)7[V14O38(OCN)]·6C2H6OS, 3, and heptaammonium nitratotetradecavanadate dimethyl sulfoxide hexasolvate, (NH4)7[V14O38(NO3)]·6C2H6OS, 4, were determined. The tube consists of two layers of V7 rings with a guest anion at the centre. The distances between the incorporated anions and the nearest V atoms are 3.058 (3), 3.039 (6) and 2.811 (9) Å for 2, 3 and 4, respectively, showing that the incorporated anions are stabilized via noncovalent interactions. Two ammonium cations cap both ends of the tube to stabilize the structures via hydrogen-bonding interactions. Linear OCN− and N3 − anions sit on the twofold rotation axes of the tube frameworks and the triangular plane of the NO3 − anion deviates from the equatorial plane of the tube by ca 30°.


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