2
$\begingroup$

I was reading about ripple phase in bilayer lipid membranes which is described here as a meta-stable state between lamellar tilted crystalline and lamellar fluid state. It is also known that ripple phase exists just below the phase transition temperature $T_m$. The figure below is from this article.

enter image description here

I have 2 questions here:

1) Is ripple phase a stationary structure or does it propagate in space as a travelling wave? (Since they have crystalline structures inbuilt will the fluidy defect propagate?)

2) Secondly and more importantly will ripple phase gets exhibited above transition temperature $T_m$ if the lipid interacts with some molecules like protein etc?

UPDATED QUESTION:

What can be the possible biological significance of Ripple phase in membranes? Will formation of ripple in membrane initiate any relevant processes, since membrane curvature itself is changing? I will be really helpful for any resources related to this.

I am citing an experimental biological work related to Hsp12 protein interaction with DMPG membrane in yeast which reports ripple phenomenon well above the usual transition temperature. Paper here.


NOTE: I was initially confused about whether to post this in biology.SE or physics.SE. I got more tags here. So posting it here.

$\endgroup$
  • 1
    $\begingroup$ Mmmm odd. Anyway, this post is indeed Bio, physics and also chemistry related. What I would do is go to the respective sites, enter their chat and ask if it's on topic there. Cross posting is not OK, so I'd reckon if Physics accepts it, I can either migrate or you can repost and delete it here. Physical might be your best bet, but Chemistry might as well. $\endgroup$ – AliceD Jan 9 '18 at 7:58
  • $\begingroup$ @AliceD I have modified the question a little bit and given a bounty. Do you want to have a look now? $\endgroup$ – dexterdev Mar 20 '18 at 15:53

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.