Abstract: Improved therapeutic compositions having enhanced anti-microbial activity comprising a bactericidal/permeability-increasing (BPI) protein product and an bactericidal-activity enhancing polyoxyethylene block copolymer surfactant (poloxamer) surfactant or a bacterial and fungal growth-inhibiting enhancing poloaxamer surfactant, optionally with EDTA, and methods for treating bacterial infection by administering such compositions, alone or concurrently with antibiotics.

Abstract: The present invention provides a crystallized Bactericidal Permeability-Increasing (BPI) protein; methods for x-ray diffraction analysis to provide x-ray diffraction patterns of sufficiently high resolution for three-dimensional structure determination of the protein, as well as methods for rational drug design, based on using amino acid sequence data and/or x-ray crystallography data provided on computer readable media, as analyzed on a computer system having suitable computer algorithms; and atomic coordinates are provided yielding structural information on the lipid binding and lipid transport protein family that includes BPI, LBP, CETP and PLTP.

Abstract: The present invention provides peptides having an amino acid sequence that is the amino acid sequence of a human bactericidal/permeability-increasing protein (BPI) functional domain or a subsequence thereof, and variants of the sequence or subsequence thereof, having at least one of the BPI biological activities, such as heparin binding, heparin neutralization, LPS binding, LPS neutralization or bactericidal activity. The invention provides peptides and pharmaceutical compositions of such peptides for a variety of therapeutic uses.