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

HEALTHY DIET, EXPLAIN THE CONSTITUENT OF FOOD GROUPS AND THEIR SOURCES

EXPLAIN THE CONSTITUENT OF FOOD GROUPS AND THEIR SOURCES

Locomotion in mollusca, Locomotion in Mollusca The major locomotor or...

Locomotion in Mollusca The major locomotor organ in Mollusca is the foot, which is a characteristic feature of these animals. In its simplest form the foot is a flit ventral

Spirochetosis (tick fever), S p ir ochetosis (tick fever) This is di...

S p ir ochetosis (tick fever) This is disease of young birds under poor management mostly reared as backyard poultry caused by a spiral bacterium, Borrelia anserina and tr

Explain malnutrition, Explain Malnutrition Malnutrition, impaired immun...

Explain Malnutrition Malnutrition, impaired immunity and infection can form a triad or vicious cycle, as illustrated in Figure, which works synergistically and thus worsens the

Threatened species - wildlife, Threatened Species - Wildlife Many plan...

Threatened Species - Wildlife Many plant and animal species are threatened by the possibility of extinction. However, the seriousness of the threat varies. For example, a spec

Cells, what are golgi apparatus

what are golgi apparatus

Explain about cmc information about drug substance, Question 1: Describ...

Question 1: Describe upon CMC information about drug substance to be submitted to IND for Phase 3 studies. Definition of CMC Explain about CMC information about drug subs

Appendical skeleton, it consists of the girdles and the skeleton of the lim...

it consists of the girdles and the skeleton of the limbs

Molecule that transports oxygen in red blood cells, Q. What is the name of ...

Q. What is the name of the molecule that transports oxygen in red blood cells? The respiratory pigment of the red blood cells is hemoglobin.

Describe briefly tyndall effect, Tyndall Effect One of the best ways to...

Tyndall Effect One of the best ways to distinguish a solution from a colloidal dispersion is to use a strong beam of intense light. As the beam passes through a colloidal dispe

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