BMS1041 proteins

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1. In the definition of protein structures the alpha helix is defines as:

  • tertiary structure
  • quaternary structure
  • secondary structure
  • primary structure
  • all of the things
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2. The primary structure of a protein refers to the AA sequence...

  • always written as AA1, AA2 etc
  • always written N to C
  • always written 5' to 3'
  • always written C to N

3. Peptide bonds:

  • 4) neutralise the charges on the original AA that were due to the cooh and nh3
  • 2) involves a condensation reaction
  • 1, 2 and 4
  • 1) are formed between cooh and nh2 of two separate AAs
  • 1 and 2
  • all the things
  • 3) involved hydrolysis experiments

4. Fibrous proteins...

  • have a high content of beta-sheets
  • exclude 4' proteins
  • generally provide structure, shape and protection
  • include most enzymes and regulatory proteins
  • never have alpha helical domains

5. In beta turns the following feature of proline is important

  • L isomer
  • cis isomer
  • D isomer
  • trans isomer

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