how to find mol wt. of specific protein on net? - (Aug/07/2008 )

hi,
plz tell me how can i find molecular weight of specific protein on internet??????? i have to order western markers according to my protein.
is there any speciall web site??????????????????????????







regards.

First search for the protein sequence. Got to http://www.ncbi.nlm.nih.gov/pubmed/ and find your protein there.
Then go to http://www.expasy.ch/tools/protparam.html and paste your sequence. It will give you the weight amongst other valuable information.
In general you can just multiply the number of residues of a protein by 110 to estimate the molecular weight....

so long
Martin

thanks v. much mol.