MICB 201 Chapter Notes - Chapter 3: Teichoic Acid, Glycosidic Bond, Planctomycetes
Document Summary
Required for all the genes in a bacteria. Polyamines screen the negative charges on the phosphate group in dna so that it can be compacted. Histone-like proteins anchor and maintain super coil regions. Positively charged so that they can associate with the backbone of the dna. Small loop of chromosomes exists all on its own, separate from the large chromosome could be dna of dormant virus (phage) could be a plasmid carry genes. Prokaryotes don"t have a membrane around dna (don"t have a nucleus). Note: except for some planctomycetes have nucleoid membrane around dna. We don"t understand about the staining, but it tells us about the cell wall structure. Gram -ve organisms vastly outnumber gram +ve (some are not categorized). Single pg molecules are leftover when a bacterial cell is boiled in detergent solution (in the shape of a cell) Only the non-covalently bonded cytoplasmic membrane is disrupted.
