Question

1) Sigma factors are groovy molecules. They recognize the -10 DNA repeating TATAAT sequence and the -35 region by by binding in the __________ groove of the DNA

2) The protein ___________ is responsible for binding to the ribsome, powering the rotation of the 30S subunit, thereby causing the 50s subunit to move ahead one codon.

3) This is the protein responsible for carrying a charged tRNA with an amino acid to the ribosome _ _-_ _ .

4) mRNa with more than one gene

Answer 1

1) Sigma factors are groovy molecules. They recognize the -10 DNA repeating TATAAT sequence and the -35 region by by binding in the MAJOR groove of the DNA

2) The protein EF-2 (EF-G) is responsible for binding to the ribsome, powering the rotation of the 30S subunit, thereby causing the 50s subunit to move ahead one codon.

3) This is the protein responsible for carrying a charged tRNA with an amino acid to the ribosome EF-1A (EF-Tu).

4) mRNa with more than one gene POLYCISTRONIC.

(Please note that the answers are fact-based and an explanation is not really possible)