منابع مشابه
The Mucoproteins of the Snails, Helix Aspersa and Helix Pomatia
The problem of the structure of complex proteins containing carbohydrates in their molecule is still a subject of discussion. The fundamental questions which have been debated during the last decades and which have been the subject of many controversies are concerned with the nature of the carbohydrate group present in the molecule of these substances. Since the discovery of mucoproteins or muc...
متن کاملInfluence of photoperiod on the behavioral response to olfactory stimulation in the snail Helix pomatia L.
An ethanol vapor concentration of 1.6 mmol/l was used to test the diurnal variations of the olfactory response in two groups of snails, which were adapted to different light-dark cycles. The results revealed that the olfactory sensitivity to stimulation with ethanol was significantly increased during the day-time, which corresponds to the scotophase of the light-dark cycle, to which the animals...
متن کاملThe Water Relations of Snails and Slugs I. Weight Rhythms in Helix Pomatia L
PAGE I . I n t r o d u c t i o n 3 2 8 I I . D e s c r i p t i o n o f t h e w e i g h t r h y t h m . . . . . . 3 2 9 I I I . R e l a t i o n t o a c t i v i t y . . . . . . . 3 3 1 I V . R e l a t i o n t o e n v i r o n m e n t a l v a r i a t i o n s 3 3 2 V . R e l a t i o n t o u p t a k e o f f o o d a n d w a t e r . . . . . 3 3 4 V I . B e h a v i o u r o f s n a i l s i n h u m i d a ...
متن کاملBiochemical and electronmicroscopic investigations on Helix pomatia collagen.
The skin of Helix pomatia was investigated by biochemical methods and electronmicroscope. Biochemical investigations showed that Helix pomatia collagen represents a methionine-lacking collagen resistant to CNBr-cleavage. Electron microscopic studies showed a cross striation pattern of 53--57 nm.
متن کاملInhibition of the pyruvate kinase of Helix pomatia L. by phospho-L-arginine. Phosphorylation or a novel mechanism?
It is probably true for all animals that the rate of glycolysis is intimately linked with muscular activity. Activation of the phosphorylase kinases which initiate the breakdown of glycogen constitutes one of these links; another one is the effects of nucleotides and phosphagens on key enzymes of glycolysis. Recently it was shown that the control of carbohydrate metabolism by muscular activity ...
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ژورنال
عنوان ژورنال: Nature
سال: 1883
ISSN: 0028-0836,1476-4687
DOI: 10.1038/027553b0