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Protein and Nucleic Acid Interactions

Protein and Nucleic Acid Interactions
Which of the following amino acids interact with the DNA or RNA backbone (i.e. phosphate)?

Leu and Ala
Lys and Arg
Ile and Val
Cys and Met

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Protein and Nucleic Acid Interactions
The type II restriction endonucleases, bind to DNA sites

using non-sequence-dependent backbone interactions
that are usually palindromic
All of these
using H-bonds for specificity

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Protein and Nucleic Acid Interactions
The enzyme that joins DNA cuts is called

joinase
ligase
reverse transcriptase
DNA phosphorylase

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Protein and Nucleic Acid Interactions
Which of the following amino acids can interact with the DNA or RNA nucleotide bases via hydrogen bonding?

Cys and Met
Ile and Val
Asn and Gln
Lys and Leu

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Protein and Nucleic Acid Interactions
Reverse transcripase from HIV does not

requires a primer
has a 3'- 5' exonuclease activity
has a 5' to 3' polymerase activity
uses RNA as a template

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Protein and Nucleic Acid Interactions
Cleavage of DNA by EcoRI endonuclease results in the formation of

one 3'-OH end and one 5'-phosphate end
two 3'-phosphate ends and two 3'-OH ends
one 3'-OH end and two 5'-phosphate end
two 3'-OH ends and two 5'-phosphate ends

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