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. 1997 May 13;94(10):4994–4999. doi: 10.1073/pnas.94.10.4994

Table 1.

Quantification of radiolabeled OST subunits

Subunit 125I incorporation, units* Tyrosines† Ratio
Ribophorin I 16.5 29 1.0
Ribophorin II 13.6 18 1.33
OST48 6.7 17 0.69
DAD1 2.0 4 0.86
*

Incorporation of 125I into OST subunits was determined by PhosphorImager quantification of lanes b and c of Fig. 3A and is expressed in arbitrary units. 

†

The tyrosine content of the OST subunits is based upon the mature sequences of human ribophorins I and II, human DAD1, and canine OST48.