Cannot find gene markers

Robyn Wallace rwallace at
Mon Mar 24 18:00:03 EST 1997

>In the Nov. 15, 1996 issue of SCIENCE, Polymeropoulos et al.
>have mapped the gene for Parkinson's disease to chromosome 4.
>In particular, "between markers D4S2361 and D4S421 at a
>recombination distance of 0.00 cM from marker D4S1647".
>I have only been able to locate marker D4S421.  The other
>two don't seem to exist anywhere. I've tried Unigene,
>Genethon, and most of the other mapping sites on the web
>(like Sanger, Whitehead/MIT, Wellcome Trust -- even though
>they're not necessarily involved with Chromosome 4).
>Could somebody explain why all markers would not be available,
>some false assumptions I've made in expecting to find them,
>or point to a site that I can locate them?
>                                Thanks,
>                                Christian Barrett

You can find both these markers at the Genome Database (


Robyn Wallace
Department of Cytogenetics and Molecular Genetics
Womens and Childrens Hospital
North Adelaide, South Australia  5006
Ph  61 08 8204 6442
Fax 61 08 8204 7342


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