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

Explain the sedimentation - air sampling, Explain the Sedimentation - Air S...

Explain the Sedimentation - Air Sampling? It is the simplest method, which involves exposing agar plates in air for specified time at a location to be sampled.  Microorganisms

Agro industrial-glycosides, Glycosides Calcinogenic glycosides: C...

Glycosides Calcinogenic glycosides: Certain plants contain glycosides of the active metabolite of vitamin D. The metabolite is called 1, 25-dihydroxycholecalciferol or mo

Opium and morphine, OPIUM - Opium is milky latex obtained by incisin...

OPIUM - Opium is milky latex obtained by incising the unripe capsule of white poppy ( Papave r somniferum family paprarecea) It has eaten or smoke. Generally it

Diseases of neonates - calf scour, D i se a s e s of Neonates Ca...

D i se a s e s of Neonates Calf scour It is also known as dietary diarrhoea and is characterized by foul smelling liquid faeces, and weight loss. E t iolo

Coevolution of prey-predators, Predation is a process by which one organism...

Predation is a process by which one organism (predator) eats another organism (prey). If the prey population is abundant, the predator population also becomes abundant. If the pred

Explain about the ph - nutritional biochemistry, Explain about the PH - Nut...

Explain about the PH - Nutritional Biochemistry? You have already studied about pH in your undergraduate years and know what it means. Yes, mathematically we can define pH as e

Controlling of gaseous pollutants, The gaseous pollutants can be controlled...

The gaseous pollutants can be controlled through the techniques of combustion, absorption adsorption and cold trapping. (a)   Combustion: Though combustion is a major cause of i

Determine the luria''s testing methods, Determine the Luria's testing metho...

Determine the Luria's testing methods The choice of using items selected by Christensen to determine Luria's testing methods was, in retrospect, probably less crucial than the

Bovine spongiform encephalopathy (bse), B o vi n e spongiform encephalo...

B o vi n e spongiform encephalopathy (BSE) Bovine spongiform encephalopathy (BSE) is a transmissible, neurodegenerative, fatal brain disease of cattle characterized by post

Determine the postovulatory phase of x menstrual cycle, Healthy human femal...

Healthy human female X is 25 years old and not pregnant.  During the postovulatory phase of X's menstrual cycle,   A.  there are high blood plasma levels of LH and FSH.

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