Hemoglobin Structure and Function Flashcards

1
Q

Hemoglobinopathies

A
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2
Q

Hemoglobin vs. Myoglobin

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3
Q

3 Demensional Folding of Myoglobin

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4
Q

What is a Heme Group?

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5
Q

Heme oxidation States and binding

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6
Q

Oxygen binding to heme

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7
Q

Carbon Monoxide Binding to Heme without Distal Histidine

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8
Q

Carbon Monoxide Binding to Heme with Distal Histidine

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9
Q

Comparision of CO and O2 Binding to Myoglobin

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10
Q

Tertiary/Quaternary Structure of Hemoglobin

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11
Q

Features of Quaternary Structure

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12
Q

Cooperativity as a series of Equilibria

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13
Q

Comparision of Oxygen Binding Curves of Rstate and Tstate

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14
Q

What are the major regulators of Cooperative Oxygen Binding

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15
Q

Hemoglobin and Allosteric Sturcutre Function Relationship

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16
Q

Key Residues of Beta Chain Involved in the Allosteric Mechanism of Cooperativity

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17
Q

Interactions of the Deoxy T form

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18
Q

Hemoglobin Key Beta Chain Residues

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19
Q

The Globin Pocket

20
Q

Hemoglobin Conformational Changes

21
Q

Space Filling Model of Hb Oxygenation

22
Q

Comparision of Oxygen Binding Curves for Myoglobin and Hemoglobin

23
Q

Oxygen Binding of Fetal Hemoglobin

24
Q

Relevant Features of 2,3 BPG

25
Q

BPG Binding to Hemoglobin

26
Q

Rotation of the Alpha Beta Dimer

27
Q

Allosteric Effects of BPG

28
Q

How does cooperativity occur?

29
Q

Iron interaction with Oxygen in tense and relaxed states

30
Q

Mechanism of the Tense to Relaxed Form

31
Q

Heme role in modulating protein structure

32
Q

Molecular Basis for Hemoglobin Cooperativity

33
Q

A Mechanism for Oxygen Binding

34
Q

A mechanism for Oxygen Binding Cont.

35
Q

The Bohr Effect

36
Q

Effect of CO2 on O2 affinity of Hemoglobin

37
Q

Effect of Allosteric Effectors on the Oxygen Affinity for Hemoglobin

38
Q

Role of His 146 in Bohr Effect

39
Q

CO2 transported in the blood from tissue to lungs

40
Q

Influence of Bohr Effect on Carbonic Acid and CO2 equlibrium

41
Q

Summary of Mechanism of Coorperativity

42
Q

HbS Sickle Cell Disease

43
Q

Amino Acid Alteration in Sickle Cell

44
Q

Aggregation and Polymerization of HbS

45
Q

Sickle Cell Disease Biochemical Defect