In haemoglobin,iron is attached to the globin | vedclass

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(D) Haemoglobin is a conjugated protein consisting of a protein part called globin and a non-protein part called haem.Each haem group contains an iron

Vedclass · Accepted Answer

Coordinate bond

Vedclass · Answer

(D) Haemoglobin is a conjugated protein consisting of a protein part called globin and a non-protein part called haem.Each haem group contains an iron atom in the ferrous $(Fe^{2+})$ state.This iron atom is held at the center of the porphyrin ring by four coordinate bonds with the nitrogen atoms of the pyrrole rings.Additionally,the iron atom is attached to the globin protein chain via a coordinate bond with a specific histidine residue (proximal histidine).

Column-$I$ (Science)	Column-$II$ (Meaning of molecular structure)
$P$. Inorganic Chemistry	$I$. Molecular formula
$Q$. Organic Chemistry	$II$. Four levels of organization
$R$. Physics	$III$. Two-dimensional view
$S$. Biological Protein	$IV$. Three-dimensional view

In haemoglobin,iron is attached to the globin protein by:

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