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Section 39.2 discussed the mechanism by which threonyl-tRNA synthetase
attaches threonine to the proper tRNA while preventing the attachment of the similar amino acids valine and serine. Using this as a model, explain how an alanyl-tRNA synthetase might prevent the incorrect addition of the similar amino acids glycine and valine to its target tRNA.
Group of answer choices
The alanine tRNA synthetase could have an activation site and an editing site, just like the threonyl-tRNA synthetase described in Section 39.2.
true false
[ Choose ]
FALSE
TRUE
Valine could fit in the activation site.
[ Choose ]
FALSE
TRUE
Alanine could fit in the activation site.
[ Choose ]
FALSE
TRUE
Glycine could fit in the activation site.
[ Choose ]
FALSE
TRUE
Valine could fit in the editing site.
[ Choose ]
FALSE
TRUE
Alanine could fit in the editing site.
[ Choose ]
FALSE
TRUE
Glycine could fit in the editing site.
[ Choose ]
FALSE
TRUE
 
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