method for finding axis of alpha helix from coordinates?

[sucha at immunex.com]

In article <2511km$bnj at tamsun.tamu.edu>, jac8792 at tamsun.tamu.edu (Jon A. Christopher) writes:
> Does anyone know of an automated method for finding the vector that represents
> the axis of a helix given its a-carbon coordinates?
> 
> Please reply by e-mail as I don't often read these groups.  Thank you.
> 
> Jon Christopher
> Texas A&M University
> 
I have the same question ... Could Jon Christopher please post a summary of 
the responses received? Appreciate any help. 

Thanks,
Sucha Sudarsanam
Immunex Corp

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