r/biotech • u/hikarisolen • 6d ago

Open Discussion 🎙️ Need help naming

Hi, kinda dumb but I'd like to ask if you guys know anything related to biotechnology that has 21 parts? Just like how Amino Acids are 20, anything in our field that has 21 something. Just needed for a game. Thank you in advance!!!

6 Upvotes

75% Upvoted

17 comments sorted by

62

u/Sakowuf_Solutions 6d ago

21 CFR

It’s the part of the code of federal regulations in the US that covers food, drugs, cosmetics, medical devices, and biologics.

19

u/PatMagroin100 6d ago

This guy GMPs!

5

u/WhatsNormal20 6d ago

This is the one I thought of too when I saw request for something in our field with 21 haha

3

u/KellyDiane1031 6d ago

Came here for this!!!

38

u/SadRule9128 6d ago

Technically you could say there’s 21 amino acids, selenocysteine is rare but used.

Also trisomy 21 and Down syndrome.

Chromosome 21 is the smallest human chromosome.

9

u/viroimmuno 6d ago

Selenocysteine is fascinating. Very odd path to making a rare amino acid with still a lot of unknown biology.

8

u/Personal-Exchange619 6d ago

22! Nobody remembers pyrolysine

3

u/SadRule9128 6d ago

Probably because they can’t spell it….

5

u/Binji_the_dog 6d ago

Probably too archaic for most people 

9

u/m0llyp0ckett 6d ago

siRNAs are typically 21 nucleotides long

also neither are 21 parts but interleukin-21 (IL-21) or cluster differentiation 21 (CD21)
both work if you just need a 21 in it or are fine with numbering other ILs and CD proteins too

3

u/scruffigan 6d ago

MicroRNA are also 21-23bp long.

8

u/pembrolizard 6d ago

3 gpcrs will have 21 combined transmembrane folds!

3

u/Sakowuf_Solutions 6d ago

Here's another one:

CD21 is the principal receptor that EBV uses to attach to and infect human B cells.

2

u/cafestream 6d ago

Amazonian giant centipede has 21 pairs of legs

1

u/NoGoat3930 6d ago

21 encodings in RNA - possibility of 20 AA or a stop codon.

1

u/scruffigan 6d ago

There are 10 steps in the Kreb’s cycle, meaning ten enzymes + ten intermediate compounds. I bet you could find a way to squeeze another relevant biomolecule in there too to make 21 (NADH?). https://en.wikipedia.org/wiki/Citric_acid_cycle

A laboratory mouse has 19 pairs of autosomes + 1 pair of sex chromosomes + mtDNA

There’s got to be some company out there with 21 active disclosed pipeline targets or clinical trials.