Abstract: The disclosure provides interleukin 37 (IL-37) fusion proteins, methods of making IL-37 fusion proteins including constructs used to express IL-37 fusion proteins, and methods of using IL-37 fusion proteins. In some embodiments, the IL-37 fusion protein includes amino acids 46-206 of isoform B of IL-37 and a heavy chain portion of an antibody.

Abstract: Methods and kits for detecting the presence of GlcNAc modification of a peptide or protein. The steps of detection may include combining the peptide or protein with PAP35S and a sulfotransferase to produce a reaction product including 35S labeled GlcNAc modified protein or peptide, removing background labeling with a glycosidase, separating the 35S labeled GlcNAc modified protein or peptide from PAP35S, free S-35 sulfate and labeled oligosaccharides if present, and detecting isotopic emissions from the 35S labeled GlcNAc modified peptide or protein. The detection may further include, prior to detection, the step of combining the peptide or protein with a GlcNAc transferase and UDP-GlcNAc under appropriate conditions for the GlcNAc transferase to transfer a GlcNAc to the peptide or protein.

Abstract: A kit for detecting or measuring glycosyltransferase activity including a first reagent comprising a phosphatase and a second reagent comprising a free phosphate detector, and method of detecting and measuring glycosyltransferase activity. A sugar donor, an acceptor substrate, a glycosyltransferase enzyme and a phosphatase are combined and the amount of free phosphate present in the product is measured and used to calculate the activity of the glycosyltransferase enzyme.

Abstract: A polypeptide transforming growth factor found in porcine platelets, having activity in the TGF-.beta. assay and a molecular weight of about 25 kDa. The factor is a heterodimer, one chain of which has an N-terminal sequence very different from human platelet TGF-.beta., and the other chain of which has an N-terminal sequence identical to that of human platelet TGF-.beta.. The factor is purified using gel filtration and reverse phase HPLC.

Abstract: A stirrer apparatus for stirring culture medium has a flask with a lid, a floating magnetic stirrer responsive to a moving magnetic field, and a moving field generator including poles and coils. A guide system is provided for the stirrer including a rod which extend upwardly from the stirrer and a tube which extends through the lid, the rod extending into and being rotatable in the tube; the tube has a closed upper end. A stirrer apparatus having a floating magnetic stirrer with a central, downwardly extending, closed end guide tube, and lid with a guide rod extending into the guide tube. The stirrer included one or more continuous impellers extending across the rotational axis of the stirrer; in one embodiment, the impeller is provided by a bar magnet or magnets beneath a float and in another embodiment a bar magnet is within the float, and the impeller is a continuous blade.

Abstract: A magnetic stirrer apparatus for culture medium and other liquids comprises a flask having a floating stirrer in it; a driving guide rod extends downwardly into the flask, and has a sliding drive connection with the floating stirrer. The driving guide rod is suspended from a bearing on the underside of the flask closure, and carries a driven magnet, which is magnetically coupled with a motor-driven magnet on the outside of the closure.

Abstract: A stirrer for stirring liquid in a flask comprises a magnetically attractable member formed by or supported by a buoyancy chamber, the stirrer having less density than the liquid to be stirred; the stirrer may include an impeller. A method of stirring a liquid comprising introducing liquid and a buoyant, magnetically attractable stirrer into a vessel, and causing a rotating magnetic field to rotate the stirrer.

Abstract: A magnetic stirrer apparatus includes a vessel for liquid and a floating stirrer. The floating stirrer is rotated by a magnet driven by a magnetic field generator laterally of the vessel, and a guide rod through the floating stirrer restricts its movement to rotary movement and substantially vertical movement with change in the liquid level. The magnetic field generator is operative at any level of the liquid in the vessel.