Colored molecular weight marker

摘要

Colored proteins having a known molecular weight of 1800 to 321200 are prepared by coupling monomers of a colored protein having a known molecular weight or by coupling a colored protein having a known molecular weight with a colorless protein having a known molecular weight. At least two proteins are selected from the so prepared colored proteins and used as a colored molecular weight marker. This colored molecular weight marker is used for determination of the molecular weight of a protein having an unknown molecular weight, and can also be used as a reference protein for purification of a protein having a known molecular weight.