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Structural Analysis of a High Molecular Weight Peptide

Introduction:

The JMS-S3000 SpiralTOF™ is a MALDI-TOF MS that uses an innovative spiral ion optics system to achieve the highest resolution currently available for a MALDI instrument. Additionally, the JMS-S3000 is available with a TOF-TOF option that acquires high-energy collision-induced dissociation (CID) product-ion spectra for monoisotopically selected precursor ions. In this work, we analyzed a high molecular weight peptide by using the JMS-S3000 SpiralTOF with the TOF-TOF option.

Experimental:

Sample: ACTH18-39 (Arg-Pro-Val-Lys-Val-Tyr-Pro-Asn-Gly-Ala-Glu-Asp-Glu-Ser-Ala-Glu-Ala-Phe-Pro-Leu-Glu-Phe)

Matrix: α-Cyano-4-hydroxycinnamic acid (CHCA)

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