title: Defined megadalton hyaluronan polymer standards.
abstract: The utility of polymer standards for the calibration of average molecular mass estimates often is limited by the polydispersity--the breadth of the size distribution--of the standard. Here monodisperse synthetic hyaluronan (or hyaluronic acid [HA]) complexes in the approximately 1- to 8-megadalton (MDa) range were prepared in two steps. First, synchronized stoichiometrically controlled in vitro reactions yielded linear narrow size distribution biotinylated HA chains. Second, streptavidin protein was added at substoichiometric levels to prepare a series of complexes with one, two, three, or four HA chains per streptavidin molecule. The dendritic-like molecules approximate the mobility of natural linear HA chains on agarose gels, making the complexes useful as defined size standards for high-molecular weight HA preparations.
authors.affiliation: Hyalose LLC, Oklahoma City, OK 73104, USA.
authors.forename: Wei
authors.initials: W
authors.lastname: Jing
authors.forename: F Michael
authors.initials: FM
authors.lastname: Haller
authors.forename: Andrew
authors.initials: A
authors.lastname: Almond
authors.forename: Paul L
authors.initials: PL
authors.lastname: DeAngelis
mesh_terms: D000276:Adjuvants, Immunologic / Q000138:chemical synthesis*; D001710:Biotin / Q000737:chemistry; D002138:Calibration; D002850:Chromatography, Gel / Q000379:methods; D003712:Dendrites / Q000378:metabolism; D004591:Electrophoresis, Polyacrylamide Gel; D006820:Hyaluronic Acid / Q000138:chemical synthesis*; D006863:Hydrogen-Ion Concentration; D008970:Molecular Weight; D010316:Particle Size; D012015:Reference Standards; D019809:Streptavidin / Q000737:chemistry
chemical_list: D000276:Adjuvants, Immunologic; D001710:Biotin; D006820:Hyaluronic Acid; D019809:Streptavidin