Oxygen Transport Proteins

Question 1

What is Hemoglobin (Hb)?

Answer 1

Blood protein

Question 2

What is Hemoglobin (Hb) used for?

Answer 2

O2 transport in blood

Question 3

What is Myoglobin (Mb)?

Answer 3

Muscle protein

Question 4

What is Myoglobin (Mb) used for?

Answer 4

O2 storage in muscles

Question 5

What is the colour of deoxy Mb and deoxy Hb?

Answer 5

blue

Question 6

What is the structure of deoxy Mb and deocy Hb?

Answer 6

high spin Fe(II)
heme b & axial NHis, sits out of porphyrin plane

Question 7

What is the colour of oxy Mb and oxy Hb?

Answer 7

red

Question 8

What is the structure of oxy Mb and oxy Hb?

Answer 8

heme b, axial NHis & bent O2

Question 9

What type of blood is Hemerythrin?

Answer 9

red blood

Question 10

Where is Hemerythrin found?

Answer 10

marine invertebrates

Question 11

What is the structure of Hemerythrin?

Answer 11

no heme

Question 12

What type of blood is Hemocyanin?

Answer 12

blue blood

Question 13

Where is Hemocyanin found?

Answer 13

arthropods & molluscs

Question 14

What is the structure of Hemocyanin?

Answer 14

no heme or iron

Question 15

Oxidase

Answer 15

enzyme that oxidizes a substrate using O2, produces H20 or H2O2

Question 16

Peroxidase

Answer 16

enzyme that oxidizes a substrate using H2O2

Question 17

Oxygenase

Answer 17

enzyme that oxidizes a substrate using O2 as source of O atoms

Question 18

Monooxygenase

Answer 18

incorporated one O atom from O2 into substrate and another from somewhere else

Question 19

Dioxygenase

Answer 19

incorporates both O atoms from O2 into substrate