Dictionary » P » Pi helix

Pi helix

pi helix

A rare right-handed helix found only in small portions of certain proteins. Stabilised by similar hydrogen bonds as in an a helix; there are 4.3 amino acid residues per turn of the helix.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Protein structure

Hi guys, I know that Protein structure related to their function. Certain protein usually have alpha helix is more prominent but certain protein have beta structure more prominent. My question is which amino acid is favourable to form alpha helix and beta structure? What ...

See entire post
by kanagasundar
Sat Sep 14, 2013 2:40 am
 
Forum: Cell Biology
Topic: Protein structure
Replies: 1
Views: 519

DNA helix and gene

Do the two strands of DNA helix carry the same genetic information?

See entire post
by Fearnot
Sat Aug 17, 2013 10:30 am
 
Forum: Molecular Biology
Topic: DNA helix and gene
Replies: 2
Views: 1988

Questions on the Sodium Potassium Pump and Enzymes

... bonds between Okazaki fragments... What about when one job involves two enzymes ie. DNA Gyrase and DNA Helicase in unwinding the double helix or when an enzyme has two jobs such as DNA Polymerase forming phosphodiester bonds between nucleotides and adding new nucleotides to the RNA Primer. ...

See entire post
by JoWillyTso
Mon Nov 05, 2012 5:50 pm
 
Forum: Cell Biology
Topic: Questions on the Sodium Potassium Pump and Enzymes
Replies: 3
Views: 2946

Formation of helices in heterogeneous protein vs. homogeneou

... in a heterogeneous protein compared to homogeneous protein, other than the propensity for helices being sequence dependent. Relate it to the coil-helix transition, fractional helicity and melting temperature.

See entire post
by JordanGo
Fri Oct 19, 2012 8:16 pm
 
Forum: Cell Biology
Topic: Formation of helices in heterogeneous protein vs. homogeneou
Replies: 0
Views: 922

Help - Why can't DNA be parallel?

... know specifically what might happen or why it doesn't occur. Looking at it again though, I realized, does it have to do with the RH/LH-ness of the helix? Cause if you look at the phosphates of bottom image (my version), one strand will be twisting to the right, while the other strand will be to ...

See entire post
by keetner
Sun Sep 30, 2012 6:18 pm
 
Forum: Molecular Biology
Topic: Help - Why can't DNA be parallel?
Replies: 7
Views: 3935
View all matching forum results

This page was last modified 21:16, 3 October 2005. This page has been accessed 1,575 times. 
What links here | Related changes | Permanent link