Baker: Amino Acids Flashcards Preview

Midterm 1 > Baker: Amino Acids > Flashcards

Flashcards in Baker: Amino Acids Deck (23):
1

Which amino acids are ketogenic (3)?

1. Isoleucine2. Leucine3. Tryptophan

2

Which amino acids are polar?

1. Serine2. Threonine3. Cysteine4. Asparagine5. Glutamine

3

Which amino acids are non-polar?

1. Glycine2. Alanine3. Proline4. Valine5. Leucine6. Isoleucine7. Methionine

4

Which amino acids have a negative charge?

1. Aspartate2. Glutamate

5

Which amino acids have a positive charge?

1. Lysine2. Histidine3. Arginine

6

Which amino acids are conditionally essential (6)?

1. Arginine2. Cysteine3. Glutamine4. Glycine5. Proline6. Tyrosine

7

What configuration of stereoisomerism are most amino acids in?

L configuration

8

What configuration of stereoisomerism are most amino acids in?

L configuration

9

What type of bonds are important in linking some amino acids together other than a peptide bond?

Disulfide bonds. This turns cysteine into cystine.

10

Are their proteins that do not have amino acids

Yes

11

What is a zwitterion?

The ionic form of an amino acid.

12

How many protons can an amino acid lose? What are they called when they lose them?

2. If they lose one, it is a zwitterion and if it loses another it will turn into a base.

13

How do you find the isolation point? (pI)

Take the average of the pK1 and pK2.

14

How many amino acids does it take to make a protein?

more than 50

15

What are proteins called that are not conjugated?

simple proteins

16

What are the different types of conjugated proteins?

LipoproteinsGlycoproteinsPhosphoproteinsHemoproteinsFlavoproteinsMetalloproteins

17

What are the different types of conjugated proteins?

LipoproteinsGlycoproteinsPhosphoproteinsHemoproteinsFlavoproteinsMetalloproteins

18

What are conjugated proteins?

Proteins that have a certain group attached to them (ex. lipoproteins)

19

What are the four levels of structure in a protein and explain each of them

primary: amino acid chainSecondary: When the chain folds on itself to form an alpha helix or better sheet.Tertiary: multiple secondary structures that come together in a massQuaternary structures: Multiple tertiary structures that come together.

20

Where are most plasma proteins assembled?

the Liver

21

What can contribute to a protein change in conformation?

Things binding to it and also that the peptide groups can move around.

22

What test do you run to find out how many alpha helices or beta sheets there are in a protein?

Circular Dichroism Spectroscopy

23

protein folding is regulated by what

By the differences in the pathways that control how they are made.