A4; Exam l prep https/moodle.ulm.edu/mod/quiz/attempt.php?attempt-29263308cmid 1

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A4; Exam l prep https/moodle.ulm.edu/mod/quiz/attempt.php?attempt-29263308cmid 19221418page @ULM My CoursesThis Course My courses BIOL2020-40157-Fall 2018Assignmnts A4: Exam I prep 14 Which of the following statements is FALSE? Select one ut of 2 Proteins are designed to bind their ligands as tightly as possible. Changes in the amino acid sequence of a protein can decrease binding to a igand even if the altered amino acid does not lie in the binding site for the igand. Binding between protein and ligand generally involives noncovalent bonds Many proteins have more than one binding site The three dimensional structure of a protein dictates its function by determining its binding specificity for other molecules to search

Explanation / Answer

False - proteins are designed to bind to their ligand as tightly as possible .

This is false because proteins have to give up on their ligands at some point of time .

For example , when an enzyme catalyses a reaction of substrate , the release of the products formed is very important .

Another example is the hemoglobin. If hemoglihem(protein) does not release oxygen (ligand ) easily after reaching the tissue , the tissue will lack the oxygen And the hemoglobin will be of no use .

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