Protein and Amino Acid and Enzymes

Question 1

primary structure

Answer 1

amino acids– covalent bonds

Question 2

secondary structure

Answer 2

hydrogen bond
alpha helices and beta pleated sheets

Question 3

tertiary structure

Answer 3

ionic bonds, dipole-dipole, london dispersion and covalent interaction between amino acids

Question 4

quaternary structure

Answer 4

disulfide bonds, london dispersion, dipole dipole,

Question 5

what do kinase proteins do

Answer 5

they phosphorylate proteins

Question 6

What properties exist for tyrosin

Answer 6

polar aromatic

Question 7

which amino acid codes the start codon

Answer 7

methonine

Question 8

how to determine the pI of a structure

Answer 8

Pka1+Pka2/2

Question 9

what is a stereocenter

Answer 9

an atom that is bonded to 4 different subsitutents (chiral atom)

Question 10

what is the only achiral amino acid

Answer 10

glycine (Gly, G) hydrophobic

Question 11

what is average molecular weight of amino acid

Answer 11

110Da

Question 12

what is a zymogen

Answer 12

active upon cleavage or modificaton

Question 13

what does competitive inhibitor do to kinetics

Answer 13

increase Km, does not change V max

Question 14

at low substrate addition of more substrate will

Answer 14

increase the rate linearly as it approaches vmax it will increase non linearly, but will not effect rate or vmax when reached

Question 15

how are cyestine disulfide bridge formed or broken

Answer 15

REDOX

Question 16

What is the termination process in protein synthesis

Answer 16

STOP codon–> release factors officially end protein synthesis

Question 17

what does noncompetitive inhibitors do to enzyme kinetics

Answer 17

do not change the Km though they do decrease the Vmax

Question 18

how do you calculate pI?

Answer 18

the average of the Pka values

Question 19

how to identify a stereocenter

Answer 19

attached to 4 unique molecular groups

Question 20

what is an achiral amino acid

Answer 20

glycine