Haem (Noun)
Meaning
A complex red organic pigment containing iron and other atoms to which oxygen binds.
Classification
Nouns denoting substances.
Examples
- Haem is the iron-bearing, non-protein part of haemoglobin and is located within the interior of the globin.
- A typical example of this structure is found in haem b of the myoglobin, cytochromes and globins.
- When bound to proteins it gives a bright red color as found in oxygen transporting blood and chloroplast haem containing electron carrier enzymes.
- Some protists are characterized by presence of special iron-bearing compounds of organic nature haem of animals, also serving the transport of oxygen and oxidative respiratory reactions.
- X-ray studies showed the chlorin system surrounding a Fe++ haem forming five linkages through chlorin centre on both upper and lower edges of Fe atom with extra and slightly twisted benzol cycle beyond CIV above left benzene C8 H group ring II lower of coprophorphin at edges H16 near from co val.