Essential Biochemistry - Chemistry Of Hemoglobin (Section 2 - No. 39)

Normal adult hemoglobin (HbA) has the following chains:

α₂β₂

α₂γ₂

α₂δ₂

α₂ε₂

Normal adult hemoglobin (HbA) consists of two alpha (α) chains and two beta (β) chains.