MTSSL is a paramagnetic nitroxide spin label featuring a methanethiosulfonate group for site-directed spin labeling, particularly through disulfide linkages with cysteine residues on proteins. When combined with electron paramagnetic resonance spectroscopy, site-directed spin labeling is used to study the structural...

Rifabutin is a rifamycin antibiotic. It is active against a variety of Gram-positive and Gram-negative bacteria, including 81 clinical isolates of H. pylori (MIC50 = 0.25 µg/ml), as well as S. aureus, S. pyogenes, and C. trachomatis (MICs = 0.004, 0.005, and ~0.008 µg/ml, respectively). Rifabutin (0.5 µg/ml) is also...

alpha-D-Glucose-1,6-bisphosphate is a bis-phosphorylated derivative of alpha-D-glucose that has roles in carbohydrate metabolism. It is the product of the reaction of glucose-1- or 6-phosphate with glucose-1,6-bisphosphate synthase (PGM2LI) in the conversion of 1,3-bisphosphoglycerate to 3-phosphoglycerate. It is...

Azumolene is a muscle relaxant that inhibits the release of calcium from skeletal muscle sarcoplasmic reticulum. It inhibits a component of store-operated calcium entry (SOCE) that is coupled to the skeletal muscle ryanodine receptor, with 20 µM azumolene causing a 70% reduction in SOCE in myotubes. Azumolene has...

3-[2-N-(Biotinyl)aminoethyldithio]propanoic acid features a biotin group and propanoic acid separated by a disulfide linkage. The carboxyl group of propanoic acid allows biotinylation of targets through either a chemical or enzymatic acylation reaction. The disulfide bond permits removal of the biotin group with...