The crystal structure of the "supernatant protein factor", a human lipid transfer protein involved in intracellular isoprenoid transport, has been recently solved by PD Dr. Achim Stocker in the group of Prof. Ulrich Baumann.

References:

• A. Stocker, T. Tomizaki, C. Schulze-Briese, U. Baumann;
  "Crystal Structure of the Human Supernatant Protein Factor"
  Structure, 10, 1533-1540, (2002); doi:10.1016/S0969-2126(02)00884-5.