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We consider a possible interpretation of the new charm-strange mesonDs0*(2317) as a hadronic molecule - a bound state of D and K mesons. Using aneffective Lagrangian approach we calculate the strong Ds0* to Ds pi0 andradiative Ds0* to Ds* gamma decays. A new impact related to the DK molecularstructure of the Ds0*(2317) meson is that the presence of u(d) quarks in the Dand K mesons gives rise to a direct strong isospin-violating transition Ds0* toDs pi0 in addition to the decay mechanism induced by eta-pi0 mixing consideredpreviously. We show that the direct transition dominates over the eta-pi0mixing transition in the Ds0* to Ds pi0 decay. Our results for the partialdecay widths are consistent with previous calculations.

Strong and radiative decays of the Ds0*(2317) meson in the DK-molecule picture