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mRNA
transcribes a gene's genetic code from DNA, complementary to DNA. TRANSCRIBED in 5' to 3' direction. synthesis catalyzed by RNA Polymerase.
Codon
3 nucleotide code for AA.
rRNA
made of 2 subunits; small 30S & large 50S. Composed of nucleotides & proteins.
tRNA
small, composed of nucleotides. Two binding sites: 1. Anticodon: complementary to codon on mRNA (H-bonds) 2. Binding site for Amino Acid: on 3' end; One per AA; (20+ types)
Genetic Code
3 nucleotides in a row specify each amino acid. 4x4x4 = 64 possible base combinations to code for 20 AA.
A site
Location for tRNA (transfer RNA) to bring in the appropriate Amino Acid.
P site
Holds tRNA with growing protein chain.
E site
where tRNA lets go of protein leaves to go find more of its amino acid.
Degenerate Genetic Code
Genetic code has more than one codon/AA.
Amino Acids
The building blocks specified by codons in the genetic code.
Anticodon
Complementary to codon on mRNA (H-bonds).