36. The T form (tense or taut form) of deoxyhemoglobin differs from oxyhemoglobin (the R form or
relaxed form) by all EXCEPT:
(A) covalent linkages between subunits.
(B) specific intrachain hydrogen bonds.
(C) between P-subunit salt links (ion-pair bonds).
(D) between c-subunits salt links (ion-pair bonds).
(E) intrachain salt bridges.
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