Biochemistry Informatics - Sequence Alignment of Subunit 1 of Cytochrome c Oxida

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Biochemistry Informatics - Sequence Alignment of Subunit 1 of Cytochrome c Oxidase

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4. Which of the following statements is consistent with the alignment of amino acids 413 (histidine, pig), 414 (glutamine, sailfin lizard) and 448 (histidine, dinoflagellate)? A. Each residue likely participates as a cation in an ion pair B. Each residue likely participates in induced dipole-induced dipole C. D. interactions. Each residue likely participates as an anion in an ion pair. Each residue likely participates in hydrogen bonding. According the alignment, the amino acids at positions 91 (pig), 92 (sailfin lizard), and 118 (dinoflagellate) share which of the following properties? 5. A. The side chains bear negative charges B. The side chains experience London dispersion forces. C. The side chains bear positive charges. D. The side chains form hydrogen bonds.

Explanation / Answer

4 A Each molecule will participate as a cation. This is so because His is a basic amino acid and has + ve charge. Glutamine is unharged.

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