Hi Monitha,

The following page on our Wiki should provide some clarification:
http://genomewiki.ucsc.edu/index.php/Coordinate_Transforms

This page may also be useful for you:
http://genome.ucsc.edu/FAQ/FAQformat.html#format1

Feel free to contact us again at [email protected] if you have any 
further questions.

---
Luvina Guruvadoo
UCSC Genome Bioinformatics Group


On 7/26/2012 6:51 AM, monithamohan harilkumar wrote:
> Hello,
>
> My earlier mails egarding lift over were cleared well. Now i have a doubt
> regarding SNP table from UCSC
>
> My data,its a methylation data and i need to check if the methylation is
> just an SNP or not , is positioned in this way-  For e.g.
> hg18mapinfo       strand
>   100532397                top
>    149364056               bot
>     23982732                bot
>    53478180                bot
>
>
>
>
> the snp data which i retrieved as you knwo will have following col
> hg18start(chrom start)      hg18end(chrom end)      (and a few other col
> ...which is not relevant right now)
>
> 100532397                            100532398
> 1493640565                             149364056
>        23982731                                     23982732
> 53478180                                 53478180
>
>
> whien i map between these two tables..as I told you i need to check for
> SNPs in my methylation data, I get is
>
> hg18start(chrom start)      hg18end(chrom end)            hg18mapinfo
> strand
> 100532397                            100532398
> 100532397                top
>    1493640565                             149364056
> 149364056               bot
>        23982731                                     23982732
>   23982732
>                 bot
> 53478180                                 53478181
>   53478180
>                 bot
>
> As you can see mapping is done in between start and end posiitons this is
> causing me confusion , what should i understand from this, I need all the
> positions that has C , but when it maps like this with start or end, I dont
> understand.and i dont know how to assign the remaining coloumns.
> The basic doubt is , isnt there an SNP table with just one location for one
> base pair, because these two start and end correspond to two different base
> pairs in actual gene.
>
> Thanks,
> Monitha
> _______________________________________________
> Genome maillist  [email protected]
> https://lists.soe.ucsc.edu/mailman/listinfo/genome


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