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Topic: What are the main properites of nucleic acid?  (Read 6669 times)

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jena

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What are the main properites of nucleic acid?
« on: October 27, 2005, 12:34:25 PM »
Hi,

My Question: What are the main properites of nucleic acid?

So I found that


  • The backbone is made of alternating residures
  • The backbone is hydrophilic to OH groups of sugar.
  • They form H-bond through condensation
  • Their phosphate groups are ionized and charged
Is there anything else that I may be missing ???

Thank You  ;D
« Last Edit: October 27, 2005, 12:51:56 PM by Mitch »

Offline sdekivit

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Re:What are the main properites of nucleic acid?
« Reply #1 on: October 27, 2005, 04:29:00 PM »

melting temperature depends on amount of G and C
« Last Edit: October 27, 2005, 04:29:19 PM by sdekivit »

Offline Albert

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Re:What are the main properites of nucleic acid?
« Reply #2 on: October 29, 2005, 04:11:23 AM »
Moreover, nucleic acids have 5'- and 3'- ends, which give you the reading frame.

Hbond

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Re:What are the main properites of nucleic acid?
« Reply #3 on: November 03, 2005, 01:00:28 PM »
The hydrogen bonding between base pairs has an additional H-bonding hydrogen that does not form a H bond leaving residual h-bonding potential within the base pairs. The bases are stabilized by resonance.

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Re:What are the main properites of nucleic acid?
« Reply #4 on: November 03, 2005, 01:16:29 PM »
There are three hbonds between C and G and two between T(or U) and A. This influences density: the more C-G couples it has, the denser a nucleic acid is.
« Last Edit: November 03, 2005, 01:20:38 PM by Albert »

Offline constant thinker

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Re:What are the main properites of nucleic acid?
« Reply #5 on: November 03, 2005, 09:39:52 PM »
They form really long chains also.
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Offline sdekivit

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Re:What are the main properites of nucleic acid?
« Reply #6 on: November 04, 2005, 03:38:30 AM »
There are three hbonds between C and G and two between T(or U) and A. This influences density: the more C-G couples it has, the denser a nucleic acid is.

and melting temperature ;)

Hbond

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Re:What are the main properites of nucleic acid?
« Reply #7 on: November 05, 2005, 08:00:05 AM »
The DNA and RNA differ by their sugar residues. The DNA has a pentose sugar that only differs by an -H for DNA and an -OH for the RNA. This adds more van der Waals to DNA making it form the double helix in an attempt to lower surface tension with water. The substitution of the base thymine of DNA instead of uracil for RNA has a similar effect. These differ only by an -CH3 for thymine and -H for uracil. The latter also imparts greater surface tension to the DNA causing it to pack as a double helix within water.

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