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Host group order

1. Vertebrates


2. Invertebrates


3. Plants


4. Lower euk (fungi, algae, protozoa)


5. Prok (bacteria, archaea)

5

Order suffix

-virales

Family

-viridae

Genus

-virus

Species: phage naming

Number (e.g. T4)


Letter (e.g. phage Lambda

Species: plant virus

First host (e.g. tomato)


Symptoms (e.g. bushy and stunts growth)

Tomato bushy stunt virus

Species: vertebrate virus

Host (e.g. bovine = cow)


Location (e.g. ebola valley)


Disease (e.g. measles)

Varies

ssDNA virus genomes

Small


Circular


Some segmented


-monopartite: 1 particle, 1 genome


-multipartite: >1 particle, 2+ particles

ssDNA virus structure

Most icosahedral capsid


No envelope


ssDNA virus hosts groups

1. Vert


2. Invert


3. Plants


5. Prok

ssDNA virus examples

Circoviridae


Parvoviridae

2

dsDNA virus genome

Size varies


Linear OR circular


No segmentation


Must bring DdRp into cell

dsDNA virus structure

Most icosahedral


+/- envelope

dsDNA virus host groups

1. Vert


2. Invert


4. Lower euk


5. Prok

dsDNA virus examples

(Most phages)


Siphoviridae (incl. Phage lambda)


Mimivirus & Pandoravirus (giant)


Poxviridae (pathogen)


Papillomavirus


Herpesvirus


Andenoviridae (gene editing, gene therapy)



7

dsDNA virus advantages

No 2' hydroxyl (more stable: no susceptible to alkaline hydrolysis or nuclease)


Complimentary copy (for repair)


Has proofreading activity

3 advantages

(+) strand RNA virus genome

Not too large (max 30kb)


All linear


Some segmented


Coding sense

(+) strand RNA virus host groups

(All)


1. Vert


2. Invert


3. Plants


4. Lower euk


5. Prok

(+) strand RNA virus structure

Most icosahedral


+/- envelope


Has 2' hydroxyl on ribose (susceptible to alkaline hydrolysis and nuclease)

(+) strand RNA virus examples

Leviviridae (phages; e.g. Qβ, MS2)


Flaviviridae (pathogens; e.g. flavivirus, west-nile virus, ebolavirus)


Togaviridae (infect animals)


Coronaviridae