Coarse-grained dynamics simulation of a two-dimensional auxetic lattice.*

We present the dynamical behavior of the geometric degrees of freedom of a 2D lattice obtained by the tessellation of the C4-symmetric protein L-rhamnulose-1-phosphate aldolase (RhuA). We analyze the relevance of the parameters defining said kind of lattice on the configurations and dynamical behaviors exhibited by it. Constrained dynamics calculations, including holonomic and nonholonomic constraints, provide essential information towards the understanding of the coherent behavior observed experimentally, as well as intriguing insight on the auxetic character of this arrangement.