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vitellin

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vitellin
[vitel′in]
Etymology: L, vitellus, yolk
a lipoprotein containing lecithin, found in the yolk of eggs. Also called ovovitellin. vitelline [-ēn] , adj.


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The yellow part is encased in a protein film called Vitellin membrane which has two small anchoring cords on opposite sides for holding the egg yolk in the central position.
Incredible Hens and Nutritious Eggs! by Dilip Dahanukar / Food/cooking/nutrition community
The RNA:DNA ratio is a good indicator of sexual maturity in the gonad-visceral mass; the increasing RNA:DNA ratio in the gonad-visceral mass appears to show the rising synthetic activity of vitellin within the gonad.
Seasonal variations in reproductive activity and biochemical ... by Liu, Wenguang; Li, Qi; Yuan, Yundang; Zhang, Shaohua / Journal of Shellfish Research
Among their topics are the biosynthesis and processing of insect vitellogenins, the regulation of yolk protein gene expression and vitellogenesis in higher diptera, vitellogenesis directed by juvenile hormone, the accumulation of lipids in insect oocytes, the regulation of yolk protein degradation during insect enbryogenesis, and biochemical and ultrastructural aspects of vitellin utilization during embryogensis.
Reproductive Biology of Invertebrates; v.12: Part B: Progress in ... by SciTech Book News
 
 
 
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