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Fig. 4. Western blots showing VSG release for mutants D503C (A), D503E (B),
506-508T (C),
504-526 (D),
504-511 (E),
512-526 (F) and
519-526 (G). Cells were induced with 100 ng/ml doxycline for 24 hours
in HMI9 medium. Aliquots representing 2x104 cells were loaded
per lane. Lanes C, P1, P2 and S contain, respectively, whole cells, pellet
after lysis, and pellet and supernatant after GPIPLC activation. In (A) and
(B) the amount of mutated VSG is compared with unmutated VSG 117 (T7-VSG117).
The exposure was 10 seconds for all panels except (A), which was exposed for 1
minute.