Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:MinE, which is the topological regulator of the Min system, binds MinD on a binding site overlapping to that for MinC (Wu et al. 2011) and thus can
displace MinC from the MinD-covered surface back to the cytoplasm.
Category: