1/6
文档分类:文学/艺术/军事/历史

secretion and uptake of 14c proteins by fat body of calpodes ethlius stoll. (lepidoptera, hesperiidae)开题资料.pdf


下载后只包含 1 个 PDF 格式的文档,没有任何的图纸或源代码,查看文件列表

特别说明:文档预览什么样,下载就是什么样。

下载所得到的文件列表
secretion and uptake of 14c proteins by fat body of calpodes ethlius stoll. (lepidoptera, hesperiidae)开题资料.pdf
文档介绍:
Secretion and Uptake of I4C Proteins by Fat Body of Calpodes ethlius
Stoll. (Lepidoptera, Hesperiidae)
J. V. COLLINS
Department of Biology
Dalhousie University
Halifax, Nova Scotia, Canada
Received April 1974lRevised August I974
Insect fat body from larvae of Calpodes ethlius synthesised proteins in vitro, some of which were
secreted into the medium. 14C leucine was incorporated into fat-body proteins and the released
proteins were characterised by electrophoresis and immunodiffusion. The released proteins included
the three main proteins normally found in larval hemolymph and fat body. Larval fat body in the
main synthetic phase of development did not sequester these 14C-labelled proteins when incubated
with them in vitro or when they were injected into mid-instar larvae. In contrast, these proteins were
sequestered by fat-body cells undergoing pupation.
The conclusion is that larval fat-body cells in the main synthetic phase selectively exclude pro-
teins synthesised in vitro by fat body of the same age. During pupal development the fat body
absorbs proteins it secreted at an earlier age.
Introduction
Studies on the economy ofinsect hemolymph and fat-body uptake resulted in the formation of granules of stored
proteins have shown that the fat body of several species protein. Locke and Collins [31 therefo
内容来自淘豆网www.taodocs.com转载请标明出处.