lqwerty98
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#1
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#1
what is the difference between a promoter and a primer?
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Reality Check
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#2
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#2
(Original post by lqwerty98)
what is the difference between a promoter and a primer?
About the only thing they share is an initial letter.

A primer can be all sorts of things - a short segment of DNA which allows DNA synthesis to proceed on the lagging strand, something used during the PCR reaction, etc.

A promoter is an area of a gene involved in its expression - the clue to what it does is in the name.
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wolfmoon88
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#3
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(Original post by Reality Check)
About the only thing they share is an initial letter.

A primer can be all sorts of things - a short segment of DNA which allows DNA synthesis to proceed on the lagging strand, something used during the PCR reaction, etc.

A promoter is an area of a gene involved in its expression - the clue to what it does is in the name.
Promoter is only relevant in Transcription?

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Reality Check
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#4
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#4
(Original post by wolfmoon88)
Promoter is only relevant in Transcription?

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Yes, that could be a difference between the two - but without the OP giving us a bit more detail where the question has come from we're not quite sure what response is being sought.
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lqwerty98
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#5
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#5
Thank you!
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wolfmoon88
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#6
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(Original post by Reality Check)
Yes, that could be a difference between the two - but without the OP giving us a bit more detail where the question has come from we're not quite sure what response is being sought.
Fair enough!

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Aplens
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#7
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(Original post by wolfmoon88)
Promoter is only relevant in Transcription?

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In what sense? RNA polymerase attaches to the beginning of the gene?
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wolfmoon88
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#8
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(Original post by Aplens)
In what sense? RNA polymerase attaches to the beginning of the gene?
RNA Polymerase bind to the promoter region to initiate Transcription. Promoter sequence is TATA.

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LennyBicknel
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#9
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(Original post by Reality Check)
Yes, that could be a difference between the two - but without the OP giving us a bit more detail where the question has come from we're not quite sure what response is being sought.
Semi-relevant question, but what's the difference between an operator and promoter region (i.e. on an operon)? I written down that, as you've said, a promoter is the side where RNA polymerase binds for transcription, whilst the operator turns the genes on and off..? How does that work? I know that repressor proteins can bind to the control site, but beyond that I don't particularly understand operators..
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Gerry-Atricks
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#10
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(Original post by Reality Check)
About the only thing they share is an initial letter.

A primer can be all sorts of things - a short segment of DNA which allows DNA synthesis to proceed on the lagging strand, something used during the PCR reaction, etc.

A promoter is an area of a gene involved in its expression - the clue to what it does is in the name.
What about the second letter?
And the last two ?
And the fourth?
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Reality Check
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#11
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#11
(Original post by LennyBicknel)
Semi-relevant question, but what's the difference between an operator and promoter region (i.e. on an operon)? I written down that, as you've said, a promoter is the side where RNA polymerase binds for transcription, whilst the operator turns the genes on and off..? How does that work? I know that repressor proteins can bind to the control site, but beyond that I don't particularly understand operators..
Operons don't just turn genes on and off - they group genes together into a single transcription unit, which can then be turned on and off as a group - like one of those 4-gang extension leads you get. The full set of genes controlled by an operon are transcribed into a single mRNA molecule. The potential issue with an operon is that if you get a point mutation, it can knock out all the genes the operon controls, not just one.

Have a look at the lac operon - this is quite a common example.
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Reality Check
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#12
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#12
(Original post by glad-he-ate-her)
What about the second letter?
And the last two ?
And the fourth?
:lol: (you bell-end). How are you doing, buddy? Finished your exams yet, or still more to go?
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Gerry-Atricks
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#13
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#13
(Original post by Reality Check)
:lol: (bell-end). How are you doing, buddy? Finished your exams yet, or still more to go?
8 more to go , made a dent and done 5 and thanks for the pet name, suits me
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Reality Check
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#14
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#14
(Original post by glad-he-ate-her)
8 more to go , made a dent and done 5 and thanks for the pet name, suits me
I knew you'd like it - because you don't take yourself too seriously. . Hope they're going well.
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Gerry-Atricks
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#15
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#15
(Original post by Reality Check)
I knew you'd like it - because you don't take yourself too seriously. . Hope they're going well.
Gone well so far but the hardest papers are yet to come so hoping those go well
Whats the point in taking yourself seriously?
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