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BIO130H1 (434)
Lecture

Protein Translation

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Department
Biology
Course
BIO130H1
Professor
Kenneth Yip
Semester
Winter

Description
Protein Translation December-23-12 12:58 PM - All cells translate RNA to protein in same way ○ From 4-letter alphabet of polynucleotides to 20-letter alphabet amino acids ○ Codon - triplet of nucleotides ○ 20 amino acids but 64 (4 ) possible combinations  Several codons correspond to same amino acid ○ Code read by class of small RNA molecules calledtransfer RNAs (tRNAs) ○ A tRNA has a specific amino acid at one end and aanticodon at the otherbase-pairing lets it recognize a particular subset of codonsmessenger RNA (mRNA) ○ Individual segments (each is a gene) of DNA transcribed into mRNA ○ Each segment codes for a specific protein
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