BIOL 366 Lecture Notes - Lecture 16: Morphogen, Cytoplasmic Streaming, Oogenesis
Document Summary
Bcd rna and bcd protein gradients in the embryo. Both localization and translation of the bcd mrna are regulated via the 3". Utr and specific rna bp (e. g. , swa, exu, staufen, pumillo) spatial & temporal regulation allow the formation of an anterior embryonic domain and of a posterior domain temporal higherachy of genes. Mrna needs to be lcoalized, and then repressed until fertilization occurrs then the repression needs to be lifted, Exuperantia must be present in the nurse cells for anterior localization. Once inside the oocyte, bicoid mrna attaches do. 10% of nos mrna is trapped interactions (bound to cytoskeleton: 90% of the nanos rna is all over the embryo, only. Nanos: posterior morphogen by osk at the posterior end via 3"utr. Posterior nos mrna lcoalization depends on its 3"utr and end of the oocyte by the kinesin motor protein they become bound to the.
