Hemoglobin | Definition, Structure, & Function | Britannica
2024年9月17日 · Hemoglobin, iron-containing protein in the blood of many animals that transports oxygen to the tissues. Hemoglobin forms an unstable reversible bond with oxygen. In the oxygenated state, it is called oxyhemoglobin and is bright red; in the reduced state, it …
Hemoglobin - Wikipedia
Hemoglobin (haemoglobin, [a] Hb or Hgb) is a protein containing iron that facilitates the transport of oxygen in red blood cells. Almost all vertebrates contain hemoglobin, [3] with the sole exception of the fish family Channichthyidae. [4]
Hemoglobin: Function, Structure, Abnormal Levels - Verywell Health
2023年5月4日 · Hemoglobin is an iron-containing protein in red blood cells (RBCs) that gives blood its red color. It has two primary functions: It transfers oxygen from your lungs to tissues throughout your body, and it carries carbon dioxide from cells back to the lungs so it …
What is Hemoglobin? Normal Levels and Potential Problems - Healthline
2023年7月12日 · Hemoglobin is a type of protein in your red blood cells that distributes the oxygen you breathe to muscles and tissues throughout your body. Without oxygen, your muscles would not have the...
Hemoglobin test - Mayo Clinic
2024年4月12日 · A hemoglobin test is a blood test. It measures the amount of a protein in red blood cells called hemoglobin. Hemoglobin carries oxygen to the body's organs and tissues when you breathe in. Then it carries the waste gas carbon dioxide back to the lungs to be breathed out.
Biochemistry, Hemoglobin Synthesis - StatPearls - NCBI Bookshelf
2023年5月1日 · Hemoglobin is an oxygen-binding protein found in erythrocytes that transports oxygen from the lungs to tissues. Each hemoglobin molecule is a tetramer made of four polypeptide globin chains. Each globin subunit contains a heme moiety formed of an organic protoporphyrin ring and a central iron ion in the ferrous state (Fe2+).
Hemoglobin: Normal, High, Low Levels by Age, Test, Deficiency - MedicineNet
2024年3月7日 · Hemoglobin (abbreviated Hgb or Hb) is the protein molecule in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the lungs. Hgb is made up of four protein molecules (globulin chains) that are …
Hemoglobin: Normal levels, risk factors, and more - Medical News Today
2024年1月26日 · Hemoglobin is an iron-rich protein in red blood cells that enables the blood to carry oxygen to tissues throughout the body. Low hemoglobin levels often indicate anemia, but high...
Molecule of the Month: Hemoglobin - RCSB: PDB-101
Hemoglobin is the protein that makes blood red. It is composed of four protein chains, two alpha chains and two beta chains, each with a ring-like heme group containing an iron atom. Oxygen binds reversibly to these iron atoms and is transported through blood.
Structure and function of haemoglobins - PubMed
Haemoglobin (Hb) is widely known as the iron-containing protein in blood that is essential for O 2 transport in mammals. Less widely recognised is that erythrocyte Hb belongs to a large family of Hb proteins with members distributed across all three …