In a folded globular protein the side chains of a Asn and a Tyr come into close

Question

In a folded globular protein the side chains of a Asn and a Tyr come into close enough proximity to interact. What is the strongest type of noncovalent interaction would be expected between these two amino acid side chains in the physiological pH range? (choose the one best answer) a) Hydrophobic b) metal ion coordination c) ionic interaction (salt bridging) d) London dispersion forces e) hydrogen bond f) disulfide bond Which of the following bind to the heme group of hemoglobin? (choose all correct answers) a) CO b) CO_2 c) O_2 d) 2, 3 bisphosphoglycerate e) N_2 The heme iron in oxyhemoglobin is coordinated to (choose all correct answers) within each subunit. a) His b) O2 c) N's of tetrapyrrole rings d) Phe e) Asp

Explanation / Answer

1) e) Hydrogen bond

2) a)CO b) CO2 c) O2 d) 2,3-Bisphosphoglyceric acid

3) a) His b) O2 c) N's of tetrapyrrole ring

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