HW4 key - Biology 202 Fall 2007 Homework 4 Due: September...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Biology 202 NAME: Fall 2007 T.A.: Homework 4 Discussion Section #: Due: September 20 or 21 1. (2 points) Many effective antibiotics affect bacteria by inhibiting translation. The experimental use of antibiotics has also been useful in determining the steps in protein synthesis. If you have an artificial mRNA with the sequence: AUGUUUUUUUUUUUUUAG, It will produce the protein: NH 2 -Met-Phe-Phe-Phe-Phe-COOH In your search for new antibiotics, you find one called putyermycin, which blocks protein synthesis. When you try to translate your artificial mRNA, the product is Met-Phe. What step in protein synthesis does putyermycin affect? Explain your answer. The antibiotic inhibits elongation. The polypeptide is made up of two amino acids and so they antibiotic is interfering with the translocation of the ribosome to the next codon of mRNA. 2. (1 point) a) What is the function of the Shine-Dalgarno sequence in prokaryotic mRNAs? The function of the Shine-Dalgarno sequence is to orient the ribosome to the proper
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/02/2008 for the course BIO 202 taught by Professor Howe during the Fall '06 term at New Mexico.

Page1 / 2

HW4 key - Biology 202 Fall 2007 Homework 4 Due: September...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online