Two biotinylated molecular weight standards provide convenient internal markers for nitrocellulose or nylon transfer blot techniques.

DNA Molecular Weight Markers

This product (MB-1302) is an electrophoresis standard consisting of 15 bands between 0.2 and 10 kilobase pairs. Bands are regularly spaced so that sizes are easy to identify. The biotinylated marker can be transferred to a membrane and detected using an avidin or streptavidin-based system.

Markers are supplied ready-to-use containing loading dye so that electrophoresis can be monitored.

Protein Molecular Weight Markers

This product (SP-1400) provides ideal standards for western blots. This product consists of eight distinct biotinylated protein bands with a molecular weight range from 19 kDa to 222 kDa. It is designed to be run in an SDS-PAGE under denaturing conditions. This mixture of biotinylated proteins can be run alongside the sample under study and, following transfer, developed with any avidin and streptavidin-based detection system.