Metal-coordination, hydrogen-bond network formation, and protein-solvent interactions in native and complexed human carbonic anhydrase I: a molecular mechanics study

1989 ◽  
Vol 111 (11) ◽  
pp. 4075-4081 ◽  
Author(s):  
Angelo Vedani ◽  
David W. Huhta ◽  
Stephen P. Jacober
1998 ◽  
Vol 76 (7) ◽  
pp. 1027-1032 ◽  
Author(s):  
Silvia Álvarez-Santos ◽  
Àngels González-Lafont ◽  
José M Lluch

The hydrogen bond network influence on the carbonic anhydrase II (CAII) zinc binding site has been studied theoretically by using the semiempirical AM1 method. To this aim, quantum mechanical reduced models of wild-type CAII and several CAII variants have been constructed. We have shown that, when a direct metal ligand donates a hydrogen bond to an indirect metal ligand, the first-shell residues enhance their electrostatic interaction with the zinc cation. Thus, the hydrogen-bond network is able to modulate the zinc binding affinity and the zinc-water pKa.Key words: hydrogen bond network, carbonic anhydrase II, Zn2+ metalloenzyme ligands.


1999 ◽  
Vol 141 (1) ◽  
pp. 217-226
Author(s):  
D. B. Chase ◽  
R. M. Ikeda

2001 ◽  
Vol 115 (11) ◽  
pp. 5101-5106 ◽  
Author(s):  
Palle Jørgensen ◽  
James S. Forster ◽  
Preben Hvelplund ◽  
Steen Brøndsted Nielsen ◽  
Shigeo Tomita

2016 ◽  
Vol 18 (40) ◽  
pp. 28061-28068 ◽  
Author(s):  
H. Ohoyama ◽  
T. Teramoto

The initial dissolution of D2O at the interfacial surface of the flowing jet sheet beam of the ionic liquid (IL) [C4min][NTf2] was measured using the King and Wells method as a function of both the temperature and collision energy of the IL.


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