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. 2005 Jun 20;169(6):929–939. doi: 10.1083/jcb.200412114

Figure 6.

Figure 6.

The COOH-terminal part of the CLASP-MT–binding domain is required for high affinity MT binding in vitro. (A) Immunoblot of a MT sedimentation assay of bacterially expressed His6-CLASP2(340–1084) at constant concentration incubated with increasing concentrations of MTs. Note the slightly smaller degradation product (∼70 kD), which does not bind to MTs. (B) Comparison of MT binding of His6-CLASP2(340–1084) and His6-CLASP2(340–875). 2.5 μM MTs were incubated with increasing amounts of expressed CLASP2 proteins. 1× corresponds to the concentration used in A. Gels were loaded with equivalent amounts of protein in each lane. Even at concentrations at which His6-CLASP2(340–1084) began to saturate MTs (8×), binding of His6-CLASP2(340–875) to MTs could not be detected. S, supernatant; P, pellet. Molecular masses are indicated in kilodaltons on the right.