****************************************************************************** From: "Johan" Date: Sat, 25 Nov 2000 17:20:42 +0100 Subject: protein-peg Organization: Belgacom Skynet SA/NV Hi, We would like to measure the MW of a protein linked to peg. Also identify the number of equivalents of peg which reacted with the protein? We do have an ion trap in the lab. Has any one experience in doing this type of analysis? Johann lukaben@yahoo.com ****************************************************************************** From: "MSweeney" Date: Sun, 26 Nov 2000 09:50:38 -0800 Subject: Re: protein-peg Organization: * Johann This one may be more of an ABRF question? I recalled something about PEGylation there, so I hit the ABRF group search engine at http://www.abrf.org/cgi-bin/htsearch and got these... http://www.abrf.org/archives/hmail/9910/0078.html http://www.abrf.org/archives/hmail/9920/0064.html http://www.abrf.org/archives/hmail/9909/0074.html http://www.abrf.org/archives/hmail/9909/0075.html need comments on the ion-trap part of things... feel free to write. Matt Sweeney mattsweeney@earthlink.net Mass Spec Consulting Training/Operations/Consulting/Method Development LC/MS Pharmacokinetics, Peptides, Proteins, Metabolism, Maintenance Classes, Specialist in Finnigan Equipment and Software