Abstract: The present invention relates to compositions and crystals of CD154 (CD40L) in complex with an anti-CD154 antibody. In addition, this invention relates to the high resolution structure of a CD154/anti-CD154 antibody complex as obtained by X-ray crystallography. Specifically, this structure provides binding sites defined by the structure coordinates determined herein. This invention also relates to a computer (machine) comprising a machine-readable data storage medium comprising a data storage material encoded with machine-readable data comprising the structure coordinates provided by this invention. The computer has instructions to process said machine-readable data into a three-dimensional representation of a molecular complex of CD154/anti-CD154 antibody based on the structure coordinates provided by this invention.

Abstract: The present invention relates to methods for designing and producing novel CD40:CD154 binding interrupter compounds and methods using these compounds to treat conditions associated with inappropriate CD154 activation in a subject. This invention also relates to novel methods for screening candidate compounds for the properties of specifically binding CD154 and interrupting CD40:CD154 interaction. This invention further relates to methods of improving the binding affinity, or the ability to block CD40/CD154 interaction, of a synthetic molecule for a trimeric protein, such as CD154. These methods comprise converting a first synthetic molecule that cannot promote lattice or aggregate formation of its target trimeric protein to a second synthetic molecule that can promote lattice or aggregate formation of its target trimeric protein.

Abstract: Methods of decreasing (e.g., inhibiting) the expression of wildtype CD154 on the surface of a target cell and methods of treating a patient suffering from or predisposed to a CD154-mediated disease. In these methods, a nucleic acid construct that directs expression of a mutant CD154 lacking at least a portion of the tumor necrosis factor homologous domain (“TNFH”) is introduced into a target cell (such as a T helper cell or a cytotoxic T cell). The expressed mutant CD154 binds to wildtype CD154 inside the cell, rendering the wildtype protein unable to reach the cell surface.

Abstract: CAIP polypeptide, nucleic acids, ands uses thereof.

Abstract: CAIP polypeptide, nucleic acid, and uses thereof.

Abstract: CAIP polypeptide, nucleic acids, ands uses thereof. A method of evaluating a compound for the ability to bind a CAIP polypeptide; fragment or analog thereof is described.

Abstract: An isolated nucleic acid encoding a CD2 Associated Intracellular Protein (CAIP) and uses thereof.

Abstract: CAIP polypeptide, nucleic acids, antibodies thereto and uses thereof.

Abstract: A substantially pure preparation of a polypeptide, the sequence of which comprises the sequence of a CAIP polypeptide.