Sheet-like and tubular aggregates of protein nanofibril-phosphate hybrids.

Bovine serum albumin assembled into supramolecular fibrils and aligned into microtubes and nanosheets upon simply heating and cooling its solution in phosphate buffer under carefully-selected conditions. This unique "one-batch" synthesis was justified by the one-dimensional growth of phosphate crystals in combination with the strong affinity of phosphate ions to protein fibrils.