Which is smaller tRNA or miRNA?

[jirotrom]

---

Members do not see this ad.

I got a question that said tRNA was the smallest, but I had thought miRNA were the smallest

 

[Jia7]

If miRNA was one of the optiosn then i would say miRNA is the shortest as well.

 

[whathashizzyDDS]

If miRNA was one of the optiosn then i would say miRNA is the shortest as well.

ditto

 

[Munks]

I know people will hate me for citing wikipedia, but it says most average miRNAs are ~22 nucleotides long while average tRNAs are ~85 nucleotides... So I'm not sure..

Maybe they're talking about how many nucleotides long the mRNA-binding portion is? Because then the tRNA would only count for the 3 codons? Lol, no idea.

 

[jirotrom]

the question was in destroyer and the anwer was all of the above with one option saying that t Rna is the smallest RNA... i picked that and said it was false though it said it was true... The reason i am asking is if wether or not the DAT ignores miRNA... :/

 

[OU11BB]

tRNA is folded up, mRNA is linear. I would have probably gone with tRNA for that reason. Not sure if my thinking is right though.

 

[jirotrom]

tRNA is folded up, mRNA is linear. I would have probably gone with tRNA for that reason. Not sure if my thinking is right though.

not mRNA... miRNA

 

[Dotoday]

It is a very difficult question. miRNA comes in various sizes, however, 22mer is most commonly found. miRNA comes from the very large molecule which later on gets spliced into 22mers by the DROSHA and the RISK complex. So, it is very difficult to compare tRNA and miRNA because of one molecule varies in sizes through different stages of its development.
Hope this helps.

 

[Munks]

Ah, I just went over that question in destroyer... I'm pretty sure it is only considering rRNA, mRNA, and tRNA... I don't think it meant to include miRNA

 

[khangreen]

knowing that miRNA is micro RNA kinna would have helped. If they say tRNA is the answer, then they got it wrong.

 

[Vicviper]

After looking it up, I guess it would be smaller than tRNA, ~22 compared to ~75, but I didn't have any info about miRNA in any of my review material, and after taking many biochemistry, molecular bio, and microbio classes, this is the first I've ever heard of it - probably because it was only officially recognized a few years ago, and so I wouldn't think this would be focused heavily on the DAT at all.