Fall 2011 Key to the Protein Standards

A   250 kDa
B   150 kDa
C   100 kDa
D   75 kDa
E   50 kDa
F   37 kDa
G   25 kDa
H   20 kDa
I   15 kDa
J   10 kDa

kDa = kiloDalton (one dalton = unified atomic mass unit, AMU, approximately equal to the mass of one hydrogen atom)