Deoxy – Hemocyanin is
(1.) heme protein and paramagnetic
(2.) Colorless and diamagnetic
(3.) O2 transport and paramagnetic
(4.) Blue colored and diamagnetic
Soln (2)
colorless Cu(I) deoxygenated form = d10 configuration (diamagnetic)
the blue Cu(II) oxygenated form.
Reference-
Hemocyanins (also spelled haemocyanins and abbreviated Hc) are proteins that transport oxygen throughout the bodies of some invertebrate animals. These metalloproteins contain two copper atoms that reversibly bind a single oxygen molecule (O2). They are second only to hemoglobin in frequency of use as an oxygen transport molecule. Unlike the hemoglobin in red blood cells found in vertebrates, hemocyanins are not bound to blood cells but are instead suspended directly in the hemolymph. Oxygenation causes a color change between the colorless Cu(I) deoxygenated form and the blue Cu(II) oxygenated form.
Coates CJ, Nairn J (July 2014). "Diverse immune functions of hemocyanins". Dev. Comp. Immunol. 45 (1): 43–55.doi:10.1016/j.dci.2014.01.021. PMID 24486681.
Reference-
Hemocyanins (also spelled haemocyanins and abbreviated Hc) are proteins that transport oxygen throughout the bodies of some invertebrate animals. These metalloproteins contain two copper atoms that reversibly bind a single oxygen molecule (O2). They are second only to hemoglobin in frequency of use as an oxygen transport molecule. Unlike the hemoglobin in red blood cells found in vertebrates, hemocyanins are not bound to blood cells but are instead suspended directly in the hemolymph. Oxygenation causes a color change between the colorless Cu(I) deoxygenated form and the blue Cu(II) oxygenated form.
Coates CJ, Nairn J (July 2014). "Diverse immune functions of hemocyanins". Dev. Comp. Immunol. 45 (1): 43–55.doi:10.1016/j.dci.2014.01.021. PMID 24486681.
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