Thermodynamic and spectroscopic study on the binding of cationic Zn(ii) and Co(ii) tetrapyridinoporphyrazines to calf thymus DNA: the role of the central metal in binding parameters

2004 ◽  
Vol 28 (10) ◽  
pp. 1227 ◽  
Author(s):  
Mozaffar Asadi ◽  
Elham Safaei ◽  
Bijan Ranjbar ◽  
Leila Hasani
2007 ◽  
Vol 40 (1) ◽  
pp. 129-137 ◽  
Author(s):  
Shaohua Wei ◽  
Jiahong Zhou ◽  
Yuying Feng ◽  
Xuesong Wang ◽  
Baowen Zhang ◽  
...  

2007 ◽  
Vol 38 (11) ◽  
pp. 1406-1415 ◽  
Author(s):  
Alla Synytsya ◽  
Petr Alexa ◽  
Jorrit de Boer ◽  
Markus Loewe ◽  
Martin Moosburger ◽  
...  

1996 ◽  
Vol 13 (5) ◽  
pp. 795-802 ◽  
Author(s):  
R. Ahmad ◽  
M. Naoui ◽  
J. F. Neault ◽  
S. Diamantoglou ◽  
H. A. Tajmir-Riahi

1979 ◽  
Vol 181 (2) ◽  
pp. 301-308 ◽  
Author(s):  
C S Cooper ◽  
R V Quincey

The properties of RNA polymerase A, which lacked the subunits of 48 000, 37 000 and 16 000 mol. wt., were compared with those of RNA polymerase A by using native calf thymus DNA as the template. The results showed that: (1) the specific activity of RNA polymerase A was about one-third that of RNA polymerase A; (2) more than 80% of RNA polymerase A, but only about 25% of RNA polymerase A, made RNA; (3) initiation by RNA polymerase A, but not by RNA polymerase A, began after a lag of 2 min; (4) the temperature-dependence for productive binding to DNA was greater for RNA polymerase A; (5) the apparent Km for UTP was greater for RNA polymerase A. These results support the supposition that the subunits missing from RNA polymerase A are involved in DNA binding [Huet, Dezélée, Iborra, Buhler, Sentenac & Fromageot (1976) Biochimie 58, 71-80] and show also that the loss of these subunits affects the elongation reaction.


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