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In this paper it is studied a relation between the kappa-symmetric and pure spinor formulations of the supermembrane in eleven dimensions using Berkovits’ recently developed method for the superstring (in D = 10). In the present paper I present an extension of this method to the supermembrane, showing that it is possible to reinstate the reparameterization constraints in the pure spinor formulation of the supermembrane by introducing a topological sector and performing a similarity transformation. The resulting BRST charge is then of conventional type and is argued to be (related to) the BRST charge of the kappa-symmetric supermembrane in a formulation where all second class constraints are “gauge unfixed” to first class constraints. In the present analysis a natural candidate for a (non-covariant) supermembrane analogue of the superstring B-ghost is encountered. [ABSTRACT FROM AUTHOR]