BIOLOGY 207 Lecture Notes - Lecture 8: Lipid Bilayer, Replisome, Cyanobacteria
Document Summary
Transertion: the coupling of transcription, translation, and membrane insertion. The signal recognition particle (srp), binds to the growing peptide. The membrane nuclear connection actually pulls on the nuclear, and expands the nuclei into digital parts of the cell. And basically, this transition counteracts the condensation forces of the nucleus associated proteins that help compact the dna. That"s because we don"t have that connection anymore, between the inner membrane, and the nuclear. Requires highly coordinated growth and expansion of all the cell"s parts. Unlike eukaryotes, prokaryotes synthesize rna & proteins continually while the cell"s dna undergoes replication. Bacterial dna replication is coordinated with cell wall expansion and ultimately the separation of two daughter cells. In prokaryotes, a circular chromosome begins to replicate at its origin (ori). Two replications forks are generated, which proceed outward in both directions. At each fork, dna is synthesized by dna polymerase and accessory proteins. This protein complex is called the replisome.
