What is the difference between myoglobin, foetal haemoglobin and adult haemoglobin?

1 Answer
Feb 15, 2018
  • See below:

Explanation:

  • MYOGLOBIN :

What is Myoglobin??????

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- lt is an iron and oxygen binding protein found in muscle tissues .

STRUCTURE OF MYOGLOBIN:

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  • lt has more affinity for oxygen.

  • But it has only one Fe2 group , the curve obtained will be hyperbolic , than being sigmoid.

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  • FETAL HAEMOGLOBIN:
  • What is Fetal haemoglobin??????

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  • Fetal haemoglobin has higher affinity for O2 because it binds BPG less strongly ( 2,3 Biphosphoglyceric acid ) . BPG act as negitive regulator , it enhances CO2 binding and prevents O2 binding.
  • ADULT HAEMOGLOBIN:
  • What is Adult haemoglobin????www.cloudfront. netwww.cloudfront. net
  • The most common haemoglobin type is Tetramer. It has 4 subunits:
    -2 alpha
    -2 beta
    These subunits are non covalently bonded.
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When pO2 is low, Hb- F can carry upto 30% more O2 than maternal Hb-A . Therefore, oxygen - haemoglobin curve for fetal haemoglobin will appear on the left side.

  • Oxygen dissociation curve for all the three terms:

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Hope this will help u........