Asked by: Fily Rujitsky
asked in category: General Last Updated: 6th January, 2020

What does plus and minus strand RNA virus mean?

1. in a single-stranded RNA virus, a plus strand is one having the same polarity as viral mRNA and containing codon sequences that can be translated into viral protein. A minus strand is a noncoding strand that must be copied by an RNA-dependent RNA polymerase to produce a translatable mRNA.

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Consequently, what is the difference between positive strand RNA virus and negative strand RNA virus?

Positive-sense viral RNA is similar to mRNA and thus can be immediately translated by the host cell. Negative-sense viral RNA is complementary to mRNA and thus must be converted to positive-sense RNA by an RNA polymerase before translation.

Also, what is positive and negative RNA? Single stranded RNA viruses are classified as positive or negative depending on the sense or polarity of the RNA. The negative viral RNA is complementary to the mRNA and must be converted to a positive RNA by RNA polymerase before translation.

Furthermore, what does negative strand RNA mean?

Medical Definition of Negative-strand RNA virus Negative-strand RNA virus: Also known as an antisense-strand RNA virus, a virus whose genetic information consists of a single strand of RNA that is the negative or antisense strand which does not encode mRNA (messenger RNA).

What is the difference between RNA virus and retrovirus?

A retrovirus is an RNA virus that is duplicated in a host cell using the reverse transcriptase enzyme to produce DNA from its RNA genome. The DNA is then incorporated into the host's genome by an integrase enzyme. In most viruses, DNA is transcribed into RNA, and then RNA is translated into protein.

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