C4 Protein Flashcards Preview

Biol 3310 > C4 Protein > Flashcards

Flashcards in C4 Protein Deck (82)
Loading flashcards...
1

Catalyzes formation or breakage of covalent bonds

Enzyme

2

Binds to DNA to switch genes on or off

Gene regulatory protein

3

Generates movement in cells and tissues

Motor protein

4

Used by cells to detect signals and transmit them to the cell's response machinery

Receptor protein

5

Each succesive amino acid adds to the ? end of a peptide

carboxyl

6

Primary structure of protein?

amino acid sequence

7

Bond between amino acids in a protein

peptide

8

alpha-helix and beta-sheets are (1*,2*,3*) structures of Proteins

2*

9

Denatured protein in water using urea. Then observed conformation reformed upon removal of urea.

Anfrinson

10

Anfrinson determined..

amino acid sequence determines structure

11

The CAP protein has one large, and one small ?

domain

12

Any segment of a polypeptide chain that can fold independently into a compact, stable structure

domain

13

The secondary structure of proteins is generally a result of ?

H-bonding

14

The tertiary structure of proteins is a result of ?

side chain interactions

15

proteins with similar structure but different function

protein families

16

proteins made of four subunits

tetramer

17

dimer of the same two polypeptides

homodimer

18

hemoglobin is a dimer of ?

heterodimers

19

Simple, elongated, three-dimensinal protein

fibrous

20

myosin has this structure

coiled coil

21

Proteins bind their ? with great specificity

ligands

22

What is meant by high affinity binding?

The ligand with a higher affinity will be present in the binding region more readily than one with a low affinity

23

Enzyme binds to ? of substrate

transition state

24

hydrolases

catalyze hydrolytic cleavage

25

nucleases

hydrolysis of nucleic acids (cleaves phosphodiester bonds)

26

proteases

hydrolysis of proteins (breakdown peptide bonds)

27

kinase

phosphate transfer

28

phosphatase

hydrolytic removal of phosphate

29

ATPases

hydrolyze ATP

30

Three ways in which enzymes lower activation energy

1) binds and orients two substrates to encourage reaction 2) rearrange electrons within substrate 3) strains substrate into transition state