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Bio 2 (Let's go Chagnon) > Proteins > Flashcards

Flashcards in Proteins Deck (15):
1

What are the proteins functions?

1. enzyme catalysts
2. defense
3. transport (carry out the orders directed from your genes)
4. support
5. motion (ATP)
6. regulation (hormones)
7. storage

2

What is the information flow?

DNA>>>RNA>>>Protein

3

Protein monomer?

Amino acid

4

What is the backbone?

It's a sequence that repeats. NCC NCC NCC (N-Terminal to C-Terminal)

5

What is hydrophobic?

Doesn't like water, non polar

6

What is hydrophilic?

Likes water, polar

7

Main chain atoms bond to form..?

Primary structure in protein
Secondary structure

8

R-Groups or side chains bond to form..?

Tertiary structure
Quaternary structure

9

How are amino acids bond together?

Peptide bond [dehydration synthesis (water is removed)]

10

Protein Primary Structure

A Specific sequence of amino acids are linked by peptide bond forming a string of amino acids

11

Each protein type has a unique sequence of amino acids

OK

12

Protein Secondary Structure

due to H-bonding in main chain it forms:
-Alpha (a-helix)
-Beta (B-pleated sheet)

13

Protein Tertiary Structure

(Folding of ONE polypeptide)
-Hydrogen bonding
-Ionic bonding
-Hydrophobic interactions including hydrophobic exclusions
-Disulfide bridges between cysteines

14

Protein Quaternary Structure

Union of two or more polypeptides held by the same interactions between side chain functional groups seen 3°- level

15

Name 2 quaternary forms of protein.

-Fibrous (3 polypeptides used for strength)
-Globular (4 polypeptides like enzymes, transport)