Structural biology: Proteobacterial accessories for diverse cellulose synthesis.

ABSTRACT

BcsD is broadly present throughout Proteobacteria and is predicted to contribute to cellulose crystallinity via interaction with BcsH. However, new work shows that, in non-crystalline forming Proteobacteria, BcsD contains an amino-terminal a1-helix, forms a tetrahedron-like structure, and interacts with alternative proline-rich protein partners.