BIO 1140 Chapter Notes - Chapter 13: Snrnp, Adenine, Ubiquitin

• School: University of Ottawa
• Department: Biology
• Course: BIO 1140
• Professor: Caroline Petit- Turcotte

Document Summary

Rna: carries out the instructions for assembly to the site, the ribosome. (also made out of rrna) 3 codons which do not specify for any amino acids (uaa, uag, uga) are stop/nonsense codons. Ead f(cid:396)o(cid:373) 5(cid:859) to 3(cid:859) di(cid:396)e(cid:272)tio(cid:374), (cid:449)ith u su(cid:271)stituti(cid:374)g t. Begins with the initator codon, aug which codes for methionine. Most aa(cid:859)s a(cid:396)e (cid:373)ade (cid:449)ith at least t(cid:449)o (cid:272)odo(cid:374)s (cid:894)e(cid:454)(cid:272)ept (cid:373)ethio(cid:374)i(cid:374)e a(cid:374)d t(cid:396)(cid:455)ptopha(cid:374)(cid:895) Degeneracy in the code (many codons will code for the same aa) Code is commaless, therefore it must be read in a certain reading frame. Transcription: where dna is transferred to complimentary mrna strand. Gene organization: a gene consists of two parts; the promoter and the transcription unit. The promoter directs where the transcription will begin with a tata box, which is 30 bases in front of where the transcription unit is. The transcription unit is the part that is copied into rna.