scholarly journals Structural, functional, and evolutionary relationships between  -exonuclease and the type II restriction endonucleases

1998 ◽  
Vol 95 (14) ◽  
pp. 7893-7897 ◽  
Author(s):  
R. A. Kovall ◽  
B. W. Matthews
1999 ◽  
Vol 179 (1) ◽  
pp. 175-180 ◽  
Author(s):  
Ana Ivic ◽  
Kenneth J Jakeman ◽  
Charles W Penn ◽  
Nigel L Brown

1968 ◽  
Vol 169 (1017) ◽  
pp. 345-378 ◽  

Investigation of 14 species of gymnotid has established that large numbers of ampullary lateralis sense organs are present in each case. These organs have been examined with the light and electron microscopes. Two distinct types occur, and these are referred to as type I and type II; the latter is more common. The fine structure of the receptors in one species ( Eigenmannia virescens ) is described in detail, and is discussed from two points of view: (i) the function and mode of operation of the organs, and (ii) the evolutionary relationships to different receptors of the vertebrate acoustic-lateralis system.


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