Translation & Amino Acids

[iistoogood4u]

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According to this website... http://acm.uva.es/p/v3/385.html
They have this strand of DNA to be transcribed and translated into AA.

1.) ATACTCGTAATTCACTCC
2.) CACCTGTACACAGAGGTAACTTAG
3.) TTAATACGACATAATTAT
4.) GCCTTGATATGGAGAACTCATTAGATA
5.) AAGTGTATGTTGAATTATATAAAACGGGCATGA
6.) ATGATGATGGCTTGA

1.)Ser-Ile-Lys
2.)Cys-Leu-His
3.)Ser-Tyr
4.)*** No translatable DNA found ***
5.)Leu-Asn-Tyr-Ile-Lys-Arg-Ala
6.)Met-Met-Ala
................................................
So the problem is the inconsistency with answers 1,2,3,4 vs 5,6. Numbers 1 through 4 they seem to transcribe into mRNA before translating it into AA. Problems 5 and 6 they seem to jus flip the T into U without transcribing. Assuming the top represents DNA...what the hell is going on here? Whats right and wrong? 😕

Edit: I highlighted the portion red that is being translated into AA for simplicity. Click on the website for AA listings.

 

[Moni Ahmadian]

Did you transcribe all into mRNA completely? If you transcribe every sequences compeletly then the other thing you need to keep in mind is that traslation does not necessarily happen from the very begining of the sequence but you need to look closely to find the correct AUG for the start.

According to this website... http://acm.uva.es/p/v3/385.html
They have this strand of DNA to be transcribed and translated into AA.

1.) ATACTCGTAATTCACTCC
2.) CACCTGTACACAGAGGTAACTTAG
3.) TTAATACGACATAATTAT
4.) GCCTTGATATGGAGAACTCATTAGATA
5.) AAGTGTATGTTGAATTATATAAAACGGGCATGA
6.) ATGATGATGGCTTGA

1.)Ser-Ile-Lys
2.)Cys-Leu-His
3.)Ser-Tyr
4.)*** No translatable DNA found ***
5.)Leu-Asn-Tyr-Ile-Lys-Arg-Ala
6.)Met-Met-Ala
................................................
So the problem is the inconsistency with answers 1,2,3,4 vs 5,6. Numbers 1 through 4 they seem to transcribe into mRNA before translating it into AA. Problems 5 and 6 they seem to jus flip the T into U without transcribing. Assuming the top represents DNA...what the hell is going on here? Whats right and wrong? 😕

Edit: I highlighted the portion red that is being translated into AA for simplicity. Click on the website for AA listings.

 

[iistoogood4u]

The first 4 where transcribed completely. Seeing T in there suggests that these are all DNA nucleotide sequences. The last 2 (5 and 6), transcribed, doesnt give you the same amino acids that the answer gives, starting at the AUG of course. Actually, transcribing it doesnt even give you AUG anywhere in there. Instead its as if they transcribed it into mRNA then transcribed it again back to DNA, except now it has U instead of T, and now it has AUG to start the AA sequence.

 

[Moni Ahmadian]

Since you start from DNA you need to transcribe it into RNA and then from what you said I am kind of thinking you need to flip the mRNA sequence over to get the correct mRNA then you should see better amino acids.

The first 4 where transcribed completely. Seeing T in there suggests that these are all DNA nucleotide sequences. The last 2 (5 and 6), transcribed, doesnt give you the same amino acids that the answer gives, starting at the AUG of course. Actually, transcribing it doesnt even give you AUG anywhere in there. Instead its as if they transcribed it into mRNA then transcribed it again back to DNA, except now it has U instead of T, and now it has AUG to start the AA sequence.