NATS 1670 Lecture Notes - Lecture 31: Transfer Rna, Carboxylic Acid, Ribosomal Rna
20 Apr 2017
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Document Summary
The amino acid sequence of a protein determines its three-dimensional structure. The remarkable range of fxns mediated by proteins results from the diversity of these 20 building blocks. Process of converting info stored in nucleic acid sequences into proteins. Genetic code: the ribosomes read mrna sequences in 3-base codons. Mrna: the template that is used to specify amino acid sequence. Ribosomes: a complex of proteins and rrna molecules. Transfer rna (trna): small (70-80 nucleotides) rna molecules that serve as adapters b/t codons in mrna and a. a. Trna anticodon recognize the codon in mrna. The hydroxyl (3") end of each trna is linked to the carboxyl group of a specific a. a. Triplet code: 61 a. a. -codons for 10 a. a. A universal code that is used in the nuclear genome of most organisms. Complementary anti codons are present in trna molecules which are specifically linked to a. a.
