IUBio

[Computational-biology] Re: PAM matrices

Niklas von Öhsen niklas.vonMINUSoehsen at scai.fhg.de
Wed Jun 1 07:26:07 EST 2005


enrico wrote:
> Hi,
> 
> I need to compute arbitrary time PAM matrices (where time is continuous 
> and not discrete). I know that this is quite easy having the 
> instantaneous rate matrix (i.e. P(i,j,t) = exp(Q*t)). Unfortunatly I 
> wasn't able to find such rate matrix, is there someone who can help?
> 
> Thanks in advance.
> 
> Enrico Varriale
> 

A very good reference is this:

@ARTICLE{MuellerV00,
   author = {Tobias M{\"u}ller and Martin Vingron},
   title = {Modeling Amino Acid Replacement},
   journal = JCB,
   year = {2000},
   volume = {7},
   pages = {761--776},
   number = {6},
}

JCB is Journal of Computational Biology. The rate matrix for the VT 
series of matrices is provided. Not strictly PAM, though.

HTH,

Niklas




More information about the Comp-bio mailing list

Send comments to us at biosci-help [At] net.bio.net