Proteins that specifically bind z dna have recently

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Unformatted text preview: hat specifically bind Z DNA have recently been identified. 27 The Double Helix may assume alternative forms Some DNA molecules are circular rather than linear : chromosomes of prokaryotic bacteria, mitochondria, chloroplasts, and those of some viruses. Some viruses carry single-stranded DNA which serves as the template for synthesis of a second strand once inside the host cell. 28 The Double Helix may assume alternative forms monkey virus 29 Some viruses use RNA as their primary genetic material. In the case of Retroviruses, like HIV-1 and -2 an intermediate DNA is made from the RNA template using viral reverse transcriptase. 30 Double-stranded linear DNA: Adenoviruses, herpesviruses (chicken pox), pox viruses (smallpox) Double-stranded circular DNA: DO NOT MEMORIZE THIS. Hepatitis viruses Single-stranded linear DNA: Parvoviruses Single-stranded circular DNA: Bacteriophage M13 Single-stranded linear RNA: picornaviruses (polio), orthomyxoviruses (influenza), coronaviruses (SARS), retroviruses (HIV) Double-stranded RNA: reoviruses (diarrhea) 31 DNA stores information in the sequence of its bases haploid human genome - 3.3 billion base pairs - only 1% actually does stuff. replication control of expression MIDTERM MATERIAL STOPS HERE. DO PRACTICE MIDTERM. 32 Next topic DNA replication Chapter 10 pp 220-250 33...
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