909599
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:
Molecular Weight:
222.27
UNSPSC Code:
12161502
NACRES:
NA.22
Recommended Products
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
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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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
Craig Gutierrez et al.
Proceedings of the National Academy of Sciences of the United States of America, 117(8), 4088-4098 (2020-02-09)
The COP9 signalosome (CSN) is an evolutionarily conserved eight-subunit (CSN1-8) protein complex that controls protein ubiquitination by deneddylating Cullin-RING E3 ligases (CRLs). The activation and function of CSN hinges on its structural dynamics, which has been challenging to decipher by
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