The DNA sequence shown encodes the last amino acids of a protein that has a tota

Question

The DNA sequence shown encodes the last amino acids of a protein that has a total of 270 amino acids amino acids. The bolded base pairs indicate the translation reading fram.

5'..... GCT AAG TAT TGC TCA AGA TTA GGA TGA TAA ATA ACT TGG 3'

3'..... CGA TTA ATA ACG AGT TCT AAT CCT ACT ATT TAT TGA ACC 5'

a) Which is the template strand for transcription? Explain.

b) An insertion of one base (X) pair causes the protein to be seven amino acids shorter. Considering the sequence above, where does the insertion occur?

c) A change of one base pair increases the protein length by one amino acid. Considering the sequence above, which base pair would be change?

Explanation / Answer

A.) Template strand for transcription is the sequence strand of DNAfrom which RNA is transcribed. It is also known as antisense strand. It is inthe direction 3' to 5' complementary to coding strand..

Template strand 3'..... CGA TTA ATA ACG AGT TCT AAT CCT ACT ATT TAT TGA ACC 5'

mRNA strand 5'.... GCU AAU UAU UGC UCA AGA UUA GGA UGA UAA AUA ACU UGG 3'

B) mRNA strand 5'.... GCU AAU UAU UGC UCA AGA UUA GGA UGA UAA AUA ACU UGG 3'

ala-----asn----tyr--cys----ser----arg-----leu-----gly----stop---stop----ile-------thr--------trp---

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.