SEC and molecular weight (MW) and hydrodynamic radius determination of CagA-N (a), CagA-M_c (b) and CagA-R (c).

<p>Green dots superimposed on the peak indicate the MW as shown on the left-hand y-axis. Red dots represent the hydrodynamic radius calculated over the central portion of the elution peak (shown by UV trace in blue). The hydrodynamic radius values are shown on the right-hand y-axis.