DNA and proteins Flashcards

1
Q

what parts of the gene are copied in transcription

A

both introns and exons

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2
Q

which direction is the:
coding strand
template strand

A

5’ - 3’

3’ - 5’

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3
Q

what are spliced out in eukaryotes

A

introns out exons join

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4
Q

where does transcription initiate

A

at the 5’ end, upstream of the promotor at the 5’ UTR

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5
Q

where does transcription terminate

A

at end of 3’ UTR

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6
Q

what does the mRNA look like/ contain

A

5’ cap - 5’ UTR - exons joined - 3’UTR - poly A tail

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7
Q

what is the translational start codon and the aa

A

AUG - methionine

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8
Q

what is the 5’ end of the protein named

A

the Amino end N terminus

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9
Q

what is the 3’ end of the protein named

A

the carboxyl end C terminus

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10
Q

what is the CDS

A

coding sequence - start to stop

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11
Q

What is the ORF

A

Open reading frame - start to stop but may include introns so different to CDS

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12
Q

what do exons contain

A

protein coding information

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13
Q

what does in silico mean

A

on computer

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14
Q

what can you use to predict the splicing at ATG

A

transcriptome data - mRNA and genome data - you can see where the first ATC/AUG is and where the stop codon is - work back to find introns/exons

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15
Q

what is cDNA

A

complementary DNA - synthesised - complementary to mRNA

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16
Q

what is cDNA used for

A

downstream analysis - sequencing - RNA seq

gene cloning into prokaryotes which don’t contain splicing ability

17
Q

what creates different isoforms of the protein

A

alternative splicing, natural variation - inclusion of different domains produces a different function leading to multiple protein products