Entries by admin

Vaccumstable MALDI-Matrices

Together with our cooperation partners from Mannheim University of Applied Sciences (HSM), we developed a completely new concept for vacuum-stable MALDI matrices. Now it’s published in “Angewandte Chemie” The trick is: we combined standard MALDI matrices with a caging group – this increases the vacuum stability. The caged group is then cleaved by the MALDI […]

SiChem congratulates this year’s Nobel Prize winners in Chemistry

Carolyn Bertozzi (Stanford University) Morten Meldal (University of Copenhagen) Barry Sharpless (Scripps Research Institute) This year, the Nobel Prize in Chemistry was awarded to Carolyn Bertozzi of the University of Stanford, Morten Meldal of the University of Copenhagen, and Barry Sharpless of the Scripps Research Institute for their work on click chemistry and bioorthogonal reactions. […]

TCO-active ester as drug-delivery system

Milan Vrabel et al. believe that performing abiotic chemical reactions within particular organelles at the subcellular level opens up new avenues: by manipulating biological processes in a targeted manner, they can be studied in more detail and this strategy can also be used to develop organelle-targeted drug-delivery systems. (TCO-NHS / SC-8070 / SC-8072 / SC-8073) […]

TCO* for single-molecule super-resolution imaging

Gerti Beliu et al. from the University of Würzburg use SiChem’s unnatural amino acid Trans-Cyclooct-2-en-L-Lysine (TCO*A; SC-8008 labelled with tetrazine dyes) for dSTORM experiments. A complete labelling and imaging pipeline has been developed to visualize transmembrane proteins in living neurons. Diogo Bessa-Neto et al. : NATURE COMMUNICATIONS (2021) 12: 6715: Bioorthogonal labeling of transmembrane proteins with […]

NEmo explains unexplained phenomenon

Neutrophils are often made responsible for killing bacteria in chronic diseases such as cystic fibrosis (CF). Here, however, there is an unexplained phenomenon: although neutrophils are massively present, long-lasting bacterial infections occur at the same time. Magaroli et al. from Emory University are trying to get to the bottom of this phenomenon and are also […]

BCN-PEG-NHS / TCO-PEG-NHS for bioimaging

Fluorescent probes that react with complementary bioorthogonal reagents and subsequently light up are excellent tools for bioimaging applications. Vrabel et al. have synthesized a series of diverse coumarin-tetrazine probes that can react with SiChem’s TCOs and BCNs in seconds to act as labels in living cells. (SC-8106 / SC-8406)   Juraj Galeta, et al.: A […]

SiChem is one of the TOP10 biotech companies in Bremen

Bremen is rather known as a trading city – less as a high-tech location for internationally operating biotech companies. But there are quite a few innovative, research-based companies that offer their products and services worldwide. Some of them are now presented by the Wirtschaftsförderung Bremen – SiChem is one of them ! Stories about Bremen […]

Click-Photocrosslinking Compounds

Alkyl diazirines are photo-reactive functional groups frequently used in photo-affinity labeling (PAL). They are compact in size, being nearly isosteric to a methyl group, and they are activated at a wavelength of light (~355 nm) that is not damaging to protein(s). Photo-crosslinked protein targets are then visualized by the reporter group (e.g. fluorophore, biotin, or […]