MALDI: Protein dimmer

From: liho2 (liho2@umdnj.edu)
Date: Thu Apr 13 2000 - 09:21:55 EDT

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I have a protein with a Mr @ 99105. I saw on our DE Pro MALDI that the M+H+
(100% peak height), M+2H+ (90%) and 2M+H+ (5%). My question is: Is the
dimmer (2M) real, or it's just an artifact commonly seen in MALDI analysis?
How can I tell the difference? (I have tried to find the mass representing
2M+3H+ without too much luck) The protein is known to be able to form a
dimmer.

Thanks for your input.

Hong Li
NJ Medical School - Rutgers Univ. Mass Facility
185 So. Orange Ave.
Newark, NJ 07103

973-972-8396
973-972-5594 (fax)

Next message: Bob Lee: "Cyclic peptides"
Previous message: Takeshi Fukuhara: "GCG Peptidesoft"
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Maybe reply: Gordon Alton: "RE: MALDI: Protein dimmer"
Maybe reply: Amina S. Woods: "RE: MALDI: Protein dimmer"
Maybe reply: fperini@unmc.edu: "RE: MALDI: Protein dimmer"
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