摘要: Abstract S-layers are paracrystalline planar assemblies of protein (or glycoprotein) which coat the surfaces some gram-negative and gram-positive bacteria (eubacteria) archaea (archaeobacteria). Over past three to four years, high resolution three-dimensional structures several have been obtained by transmission electron microscopy and, now, scanning probe (both atomic force tunneling microscopies) is providing topographical detail. Molecular approaches on select S-layer producing helping define synthetic translocative pathways necessary before surface self-assembly can commence. In an industrial sense, contributing a new application science, nanotechnology, where they being used as molecular filters, immobilization affinity matrices, biosensors.