Haem group, Biology

Assignment Help:

Haem Group

A group of compounds called porphyrins are widely distributed in plants, animals and bacteria. Porphyrins associate with metals to form metalloporphyrins which form a variety of compounds. For example chlorophyll about which is a magnesium-porphyrin complex and cytochromes which contain porphyrin group play an important role in intracellular oxidation. When ferrous iron Fe++ is added to a porphyrin protoporphyrin IX, ferrous porphyrin or haem is formed. The molecular structure is shown in figure.  

1978_Haem Group.png

Figure:  Chemical structure of haem group (a), schematic representative of a single submit of haemoglobin (b).

The ferrous iron atom is bound to the four nitrogens of the protoporphyrin ring. The ferrous iron makes two more links, one with the oxygen atom to form oxyhaemoglobin and the other to the globin portion of the molecule at a single amino acid site.


Related Discussions:- Haem group

Determine pull-ups test for check the body strength, Determine Pull-ups tes...

Determine Pull-ups test for check the body strength? This test is also done to measure upper body strength or endurance by maximum number of pull-ups completed. Subject hangs f

Explain the pair of chromosomes and sex chromosomes, Explain the pair of c...

Explain the pair of chromosomes and Sex Chromosomes? Morgan also noticed that one pair of chromosomes is different in male and female flies, one of the male chromosomes being

Define classification of lipids, Define Classification of Lipids? Chemi...

Define Classification of Lipids? Chemically, lipids are the organic molecules poor in oxygen content, soluble in organic solvents but insoluble in water. They are classified as

A protein is normally found inside of a lipid bilayer, A protein is normall...

A protein is normally found completely within the inside of a lipid bilayer. The protein likely has: a) Mostly hydrophobic side chains, pointed outwards, with the peptide backbo

Identify the hormones produced by the anterior, Identify the hormones produ...

Identify the hormones produced by the anterior and posterior lobes of the pituitary gland and specify the functions of those hormones.

Explain valacyclovir, Valacyclovir (Valtrex) - Valacyclovir is an L-val...

Valacyclovir (Valtrex) - Valacyclovir is an L-valyl ester of acyclovir that is metabolized to acyclovir after oral administration, resultingin higher serum concentrations than

What are the basic type of neurons, Q. According to the function of the tra...

Q. According to the function of the transmitted neural impulse which are the types of neurons? How different are the concepts of afference and efference of the neural impulse trans

Explain basic concepts of nutrition science, Explain Basic Concepts of Nutr...

Explain Basic Concepts of Nutrition Science? Food is the very basis of our life, the food we eat, though the process of digestion, we know, is converted into nutrients, and the

How is the excretory system of molluscs characterized, Q. How is the excret...

Q. How is the excretory system of molluscs characterized? Molluscs have one or two pair of spongelike nephridia, similar to kidneys

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd