  We prove that independence complex of a bipartite circle graph is homotopy
equivalent to a wedge of spheres, resolving a conjecture posed by Przytycki and
Silvero. As a corollary, we obtain that extreme Khovanov spectrum,
$\mathcal{X}_{j_{extreme}}$ is homotopy equivalent to a wedge of spheres. In
particular, the extreme Khovanov homology has no torsion.
