Photo-regulated metal coordination of azobenzene polymer having sterically controlled ion binding sites

1995 ◽  
Vol 35 (1-2) ◽  
pp. 103-108 ◽  
Author(s):  
Masato Nanasawa ◽  
Yoshiaki Horikago ◽  
Michiko Hirai
Keyword(s):  
Binding Sites ◽  
Metal Coordination ◽  
Ion Binding ◽  
Azobenzene Polymer ◽  
Ion Binding Sites

scholarly journals Synthesis and Photoregulated Metal Coordination of Azobenzene Polymer Having Ion Binding Sites

1991 ◽  
Vol 23 (2) ◽  
pp. 127-134 ◽  
Author(s):  
Masato Nanasawa ◽  
Takahiro Nishiyama ◽  
Hiroyoshi Kamogawa
Keyword(s):  
Binding Sites ◽  
Metal Coordination ◽  
Ion Binding ◽  
Azobenzene Polymer ◽  
Ion Binding Sites

The Effect Of Metal Ions On Human Factor IX Antigenicity

1981 ◽  
Author(s):  
R M Lewis ◽  
H M Reisner ◽  
B C Abels ◽  
H R Roberts
Keyword(s):  
Divalent Cation ◽  
Binding Sites ◽  
Human Factor ◽  
Antibody Binding ◽  
Factor Ix ◽  
Ion Binding ◽  
Human Factor Ix ◽  
Excess Mg ◽  
Ion Binding Sites ◽  
Two Populations

Affinity chromatography of an inhibitor to human factor IX (F.IX) separated the antibody into two populations. The ion dependent population of antibodies had an absolute divalent cation (Me++) binding requirement. The non-ion dependent population bound F.IX equally in the presence or absence of Me++. The concentration of Me++ required for ½ the maximum ion dependent antibody binding (½ max) was (in nM) Ca++ 0.40, Mn++ 0.05, Sr++ 0.70 and Mg++ 0.65.Ca++ potentiated the binding of antibody in the presence of excess Mg++. In addition, the ½ max for Ca++ was reduced about four fold. These observations are consistent with separate binding sites on the F.IX molecule for Ca++ and Mg++ and potentiation of Ca++ binding by Mg++. Scat- chard analysis of ion dependent antibody binding indicates about a 10 fold greater affinity of antibody in the presence of Ca++ than Mg++. In the presence of both cations, affinity was at least as high as in the presence of Ca++ alone supporting the presence of separate ion binding sites on the F.IX molecule.

Models for protein-zinc ion binding sites. II. The catalytic sites

2001 ◽  
Vol 83 (3-4) ◽  
pp. 150-165 ◽  
Author(s):  
David W. Deerfield ◽  
Charles W. Carter ◽  
Lee G. Pedersen
Keyword(s):  
Binding Sites ◽  
Zinc Ion ◽  
Ion Binding ◽  
Catalytic Sites ◽  
Ion Binding Sites ◽  
Zinc Ion Binding
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