is it?

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no but i wouldnt mind some cocaine to help me study right now lol

what are u planning to study/create in you mad scientist lab there?? when do you plan to create clones to take over evily evil empires?

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i know for a fact that helicase is needed in DNA replicaiton. i'm not sure if it's used in splitting protein synthesis.

quote:

Originally posted by Nrg2Nfinit transcription in protein synthesis and in DNA replicatin please answer.. i need to know if helicase is involved in protein sythesis for the unwinding of DNA.

The helicase (sort of DNA repair mechanism) attacks the H Bond enzymes, breaking them down to repair or totally eliminating abnormal sections to add new normal sections of DNA. The DNA ligase is the sort of Scotch adhesive tape, while the gyrase gives the helix shape.

As far as transcription in replication, all I know is DNA is transcripted (copied) to the mRNA (messenger) There is a transcriptional control present in replication that may or may not be so in protein synthesis?

JESUSS. I need a drink.

Oops. Ok. I'm looking in notes now. I have helicase under Protein Synthesis, just merely as breaking down H Bonds. Is this what you mean by "unwinding?" I guess this is for example breaking down:

A - - -- T
G ---- --C

from the helix form to replicate and in turn becoming:

-T A- (replicates down to form the strand)
-A
-C
-G
-T

your good estella sort of answers my question.. you went into alot of detail with hellicase..

I know it is used to unwind the DNA so replication can occur

durin RNA transcription however RNA poylmerase has its own function of helicase and its not a seperate unit (as in DNA)


http://en.wikipedia.org/wiki/Helicase

but i really appreciate that lookthrough estella

quote:

Originally posted by Estella Oops. Ok. I'm looking in notes now. I have helicase under Protein Synthesis, just merely as breaking down H Bonds. Is this what you mean by "unwinding?" I guess this is for example breaking down: A - - -- T G ---- --C from the helix form to replicate and in turn becoming: -T A- (replicates down to form the strand) -A -C -G -T

this is replication.. not translation into proteins.. in translation Uracil is replaced by the Thymines (U -->T ) and U binds with A (adenine)

quote:

Originally posted by Nrg2Nfinit transcription in protein synthesis and in DNA replicatin please answer.. i need to know if helicase is involved in protein sythesis for the unwinding of DNA.

During transcription, an RNA polymerase is used to generate the mRNA. In replication, a DNA polymerase is used.

The major difference is that RNA polymerase acts as its own helicase, while DNA polymerase requires a separate helicase enzyme.

Another point to note is that DNA polymerase has a better proofreading mechanism than RNA polymerase.


Edit: I see you have answered your own question.

be cafe

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quote:

Originally posted by Nrg2Nfinit this is replication.. not translation into proteins.. in translation Uracil is replaced by the Thymines (U -->T ) and U binds with A (adenine)

You're right. Thanks. Should I be writing that down? We've only done A & G Purines/T & C Pyrimidines as far as base pairs. OK so yes, helicase is used to unwind as pretext for DNA replication. If I miss that on the test Monday I'm degutting you. Or me.