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Viruses (DNA Viruses (Single stranded DNA Viruses (*Parvovirus
the ONLY…
Viruses
DNA Viruses
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DNA viruses --> think double stranded = Double HH triple PPP HHAPPPY"DNA viruses are double stranded = DOUBLE H / triple P HHAPPY to get into the nucleus for a naked PAP smear with a Parka"
- H = herpes
- H = hepdna
- A = adeno
- P = papilloma
- P = parvo
- P = pox
- Y
"give PAPP smear and CPR to the naked HIPpie!!"
--> naked DNA viruses (no envelope)
P = papilloma
A = adeno
P = parva
- "Enveloped DNA viruses wear HIGH PROFILE HATS!!"
High = herpes
Profile = pox
Hat = hepadna
DNA viral Structure
- all DNA viruses are icosahedrals
- pox virus is the exception
--> it has a complex structure
--> reason why also pox virus is the exception of DNA viruses, ONLY one to be transcribed in the cytosol by virally encoded enzymes
*Properties of Viruses
- segmented = can undergo assortment more easily
--> Segmented viruses "BOAR into the same cell together and mate"
- enveloped = can enter cells more easily
--> "give free PAPP smears and CPR to naked HIPpies"
*Envelopes of Viruses
- "give PAPP smears and CPR to naked HIPpies"
--> DNA enveloped viruses = PAPP
--> Pappiloma,
- note that all enveloped viruses are susceptible to alcohol hand gel because of the plasma membrane envelope
*Alcohol hand gel kills Enveloped Viruses
- note that all enveloped viruses are susceptible to alcohol hand gel because of the plasma membrane envelope
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*segmented Viruses
- segmented = can undergo assortment more easily
--> Segmented viruses "BOAR into the same cell together and mate"
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Genetic Drift in Viruses
- the way that viruses mutate to for new viruses
- Reassorment
Reassortment of Segmented Genes
- only can happen with RNA viruses that also have segmented genes
- their genes are split into separate segments already so can recombine with other virus strains
Segmented Reassortment Happens in a BOAR
--> think the avian and swine flu = BOAR flu
- Segmented Viruses can Reassort their Genes only when an animal and human starin infect an animal
- B = bunyaviruses
- O = Orthomyxoviruses (Influenza family)
- A = Arenoviruses
- R = reoviruses (rotavirus)
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