Viruses & Prions Flashcards
Capsomers
Individual proteins that make up a capsid.
Capsid
Holds viral genome (nucleic acid) inside.
- The basic unit of virion structure (simplest it can get).
Nucleocapsid
Holds (capsid + genome)
Envelope
Surrounds nucleocapsid
Virion
Entire Virus Particle
Icosahedral Protein Coat
Spherical protein coat/capsid which limits the size of nucleic acid.
Helical Protein Coat
Rod-shaped protein coat/capsid with no limit to the amount of nucleic acid that can fit in.
Characteristics of Enveloped Viruses
- Envelope from host cell phospholipid membranes (golgi or plama).
- Contains virally encoded structural proteins called glycoproteins or host cell proteins.
- Sensitive to heat, acids, drying
- Less associated with GI diseases (stomach acid will melt them)
DNA Viruses
몸에 남아있다가 면역력 약해지면 잘 나오는 애들
** Herpesviruses: Enveloped viruses with ds DNA
- Herpes Simplex Type 1 & 2 (HSV)
- Varicella Zoster Virus (VZV)
- Cytomegalovirus (CMV)
- Epstein Barr Virus (EBV)
RNA Viruses
유행탔던 바이러스들
- Influenza (-ssRNA)
- Coronavirus (+ssRNA)
- HIV (+ssRNA)
Characteristics of Non-Enveloped (Naked) Viruses
- Outer covering is capsid protein.
- Often lysis the host cell
- Resistant to heat, acids, drying
- Associated with GI tract
- Examples: Norovirus, rotavirus
Coronavirus
Virus Name: SARS-CoV-2
Disease Name: COVID-19
HSV-1 & HSV-2
- Cause oral & gential herpes
- can cause complications such as encephalitis, hepatitis
VZV
- Chickenpox as primary infection
- Shingles as reactivation
CMV
- usually asymptomatic but can cause mono