1988
DOI: 10.1002/arch.940090303
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Experimental modifications of an insect vitellin affect its structure and its uptake by oocytes

Abstract: The 18s and 33s vitellins (Vts) of Blattella germanica were subjected to periodate oxidation and digestions with a-mannosidase, endo-0-Nacetylglucosaminidase H (endo-H), and trypsin to study their effects on Vt structure and function. Periodate oxidation caused 335 Vt to dissociate to a form that cosedimented with 18s Vt upon glycerol gradient centrifugation but had no effect on the sedimentation of 18s Vt. This result implicates the oligosaccharides in stabilization of the 33s structure. Incubation of 18s and… Show more

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Cited by 14 publications
(2 citation statements)
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“…Calcium ions have been demonstrated to be involved in the interaction between vitellogenin and its receptor in the oocyte of Manduca (Osir et al 1986), Locusta (Rohrkasten and Ferenz 1986), and Nauphoeta (Gochoco et al 1988). Two sites within the YPs were identified by computer searches which contain similarities to divalent ion-binding sites (Fig.…”
Section: Comparison Of the Drosophila And Calliphora Ypsmentioning
confidence: 99%
See 1 more Smart Citation
“…Calcium ions have been demonstrated to be involved in the interaction between vitellogenin and its receptor in the oocyte of Manduca (Osir et al 1986), Locusta (Rohrkasten and Ferenz 1986), and Nauphoeta (Gochoco et al 1988). Two sites within the YPs were identified by computer searches which contain similarities to divalent ion-binding sites (Fig.…”
Section: Comparison Of the Drosophila And Calliphora Ypsmentioning
confidence: 99%
“…In Manduca (Osir et al 1986), Locust (Rohrkasten and Ferenz 1986), and Nauphoeta (Gochoco et al 1988) the vitellogenins require calcium to interact with the vitellogenin receptor at the oocyte membrane. In Drosophila, the uptake of the YPs is known to be pH dependent.…”
Section: T T C a A T G A C T T 126mentioning
confidence: 99%