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909599

Sigma-Aldrich

DHSO crosslinker

Synonym(s):

3,3′-Sulfinyldi(propanehydrazide), Dihydrazide sulfoxide, Mass spectrometry-cleavable crosslinker for studying protein-protein interations

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About This Item

Empirical Formula (Hill Notation):
C6H14N4O3S
CAS Number:
1971857-82-5
Molecular Weight:
222.27
UNSPSC Code:
12161502

form

powder

storage temp.

2-8°C

Application

DHSO Crosslinker is a homobifunctional, acidic residue-targeting, sulfoxide-containing crosslinker for analysis of protein-protein interactions (PPIs) through crosslinking mass spectrometry (XL-MS). DHSO possesses two hydrazide-reactive groups for targeting aspartic acid (Asp) and glutamic acid (Glu) and two symmetrical C-S cleavable bonds adjacent to the central sulfoxide. While former amine-reactive reagents react with lysine (Lys) residues in proximity to the PPI, targeting acidic residues provides further opportunity to characterize protein interaction surfaces at which Asp and Glu are often prevalent. Additionally, the 12.4 Å spacer yields tagged peptides post-cleavage for unambiguous identification by collision-induced dissociation in tandem MS. DHSO Crosslinker provides complementary data to Lys-targeting reagents and will find wide utility in the elucidation of PPIs, study of proteins that function as complexes, quantification of structural dynamics, and quest for targeting "undruggable" protein targets.

Other Notes

Technology Spotlight: Cross-Linkers for Elucidation of Protein-Protein Interactions

Developing an Acidic Residue Reactive and Sulfoxide-Containing MS-Cleavable Homobifunctional Cross-Linker for Probing Protein–Protein Interactions

Development of a Novel Sulfoxide-Containing MS-Cleavable Homobifunctional Cysteine-Reactive Cross-Linker for Studying Protein–Protein Interactions

Structural dynamics of the human COP9 signalosome revealed by cross-linking mass spectrometry and integrative modeling

Legal Information

Subject to US Patent Application #15/613,065 of the Regents of the University of California

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Product No.
Description
Pricing

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Craig B Gutierrez et al.
Analytical chemistry, 88(16), 8315-8322 (2016-07-16)
Cross-linking mass spectrometry (XL-MS) has become a powerful strategy for defining protein-protein interactions and elucidating architectures of large protein complexes. However, one of the inherent challenges in MS analysis of cross-linked peptides is their unambiguous identification. To facilitate this process
Craig B Gutierrez et al.
Analytical chemistry, 90(12), 7600-7607 (2018-05-25)
Cross-linking mass spectrometry (XL-MS) has become an emerging technology for defining protein-protein interactions (PPIs) and elucidating architectures of large protein complexes. Up to now, the most widely used cross-linking reagents target lysines. Although such reagents have been successfully applied to

Articles

Sulfoxide-Containing Mass Spectrometry (MS)-Cleavable Cross-Linkers

Learn about homobifunctional sulfoxide-containing MS-cleavable cross-linkers that enables the capture of protein-protein interactions (PPIs) in native cellular environments, and the identification of cross-linked peptides permits the determination of both identity and connectivity of PPIs.

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