scholarly journals RNA Polymerase and RNA Synthesis in the Silk Glands of the Silkworm Bombyx mori

1977 ◽  
Vol 72 (2) ◽  
pp. 331-339 ◽  
Author(s):  
S. SRIDHARA ◽  
Marie-madeleine PORTIER ◽  
Jacques DAILLIE
Keyword(s):  
Rna Polymerase ◽  
Bombyx Mori ◽  
Rna Synthesis ◽  
Silk Glands ◽  
Silkworm Bombyx Mori

In vitro action of prothoracicotropic hormone on RNA-synthesis in the prothoracic gland of the silkworm, Bombyx mori

1986 ◽  
Vol 32 (8) ◽  
pp. 711-717 ◽  
Author(s):  
Yasuo Aizono ◽  
Noboru Matsuo ◽  
Yoshihiro Yoshida ◽  
Gunki Funatsu ◽  
Masaru Funatsu ◽  
...  
Keyword(s):  
Bombyx Mori ◽  
Rna Synthesis ◽  
Prothoracic Gland ◽  
Prothoracicotropic Hormone ◽  
Silkworm Bombyx Mori

TREHALASE ACTIVITY IN THE SILK GLANDS OF THE SILKWORM, BOMBYX MORI (LEPIDOPTERA: BOMBYCIDAE)

1975 ◽  
Vol 107 (12) ◽  
pp. 1311-1314 ◽  
Author(s):  
Shuya Shimada
Keyword(s):  
Bombyx Mori ◽  
Divalent Cations ◽  
Silk Gland ◽  
Trehalase Activity ◽  
Gland Cells ◽  
Silk Glands ◽  
Tunica Propria ◽  
Silkworm Bombyx Mori ◽  
Cu And Zn ◽  
Tunica Intima

Abstract(1) Crude extracts prepared from the silk glands of the silkworm, Bombyx mori L. contain trehalase activity. (2) Trehalase in the silk glands has a pH of 5.5 and a Km of 0.71 mM. The activity of the enzyme is inhibited by divalent cations such as Mn, Cu, and Zn. (3) By histochemical methods, it is shown that trehalase is localized in the periphery of the silk gland cells, especially in the tunica propria and tunica intima. (4) Trehalase activity is low in fifth instar and increases greatly in spinning stages, after which the activity decreases.

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