Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
A Site
|
One of a ribosome's three binding sites for tRNA during translation. The A site holds the tRNA carrying the next amino acid to be added to the polypeptide chain. (A stands for aminoacyl tRNA)
|
|
|
Aminoacyl-tRNA Synthetase
|
An enzyme that joins each amino acid to the correct tRNA.
|
|
|
Anticodon
|
A specialized base triplet at one end of a tRNA molecule that recognizes a particular complementary codon on an mRNA molecule. |
|
|
E Site
|
One of a ribosome's three binding sites for tRNA during translation. The E site is the place where discharged tRNAs leave the ribosome. (E stands for exit)
|
|
|
P Site
|
One of a ribosome's three binding sites for tRNA during translation. The P site holds the tRNA carrying the growing polypeptide chain. (P stands for peptidyl tRNA)
|
|
|
Polyribosome (polysome)
|
An aggregation of several ribosomes attached to one messenger RNA molecule.
|
|
|
Ribosomal RNA (rRNA)
|
The most abundant type of RNA, which together with proteins forms the structure of ribosomes. Ribosomes coordinate the sequential coupling of tRNA molecules to mRNA codons.
|
|
|
Signal Peptide
|
A stretch of amino acids on a polypeptide that targets the protein to a specific destination in a eukaryotic cell.
|
|
|
Signal Recognition Particle (SRP)
|
A protein-RNA complex that recognizes a signal peptide as it emerges from the ribosome. |
|
|
Transfer RNA (tRNA)
|
An RNA molecule that functions as an intepreter between nucleic acid and protein language by picking up specific amino acids and recognizing the appropriate codons in the mRNA. |
|
|
Wobble
|
A violation of the base-pairing rules in that the third nucleotide (5' end) of a tRNA anticodon can form hydrogen bonds with more than one kind of base in the third position (3' end) of a codon. |
