Epic Quest Bio The case files
Case No. 100 · have you seen this molecule?

Ribosome

the machine that builds every protein

File sealed

The detectives are still writing this one up. The poster and the facts are below; the film and the interrogation room open soon.

Booking photographs

Ribosome, front view, against a height chart in nanometers
FRONT
Ribosome, side view
SIDE · PDB 4YBB

The suspect, from its real atomic coordinates. Drag to turn it. Height chart in nanometers, ruled every 1 nm. About 80 of them end to end would span an E. coli cell.

Rap sheet

Answers to
The 70S ribosome. Comes apart into 30S and 50S.
Height
26 nm, standing on its small half.
Weight
About 4 attograms
Build
Two-thirds RNA, one-third protein: three RNAs, about 54 proteins.
Habits
Reads its orders three letters at a time. Strings about 20 amino acids a second.
Known for
Making every protein, with the key step done by RNA, not protein.
Hours
When food runs out, they pair up and hibernate.
Last seen
A 5 mL tube marked E. COLI in the freezer at HQ.
72,000

of them in one E. coli cell growing flat out.
Slow growers keep a tenth as many. You’ve never seen one.

The poster on the street

The wanted poster for Ribosome

This is the photocopied wanted poster for Ribosome, No. 100. They were made for noticeboards around Boston, Cambridge and the rest of the east coast.

Found one? Scan its QR code with your phone. If you're a signed-in player, the sighting goes on your record with +1 XP.

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