Abstract: The present invention provides an improved method of screening a library of molecules to identify or select one or more members thereof which are candidate binding partners for one or more target entities: (a) contacting an expression library with one or more target entities; (b) subjecting said target entities to at least one washing step; (c) separating target entities which have become bound to one or more members of the expression library from unbound members of the expression library by separation through an organic phase, thereby separating candidate binding partners for said target entities from other library members.

Abstract: The invention relates to tumor-specific binding proteins and all uses thereof. In particular, the invention relates to antibodies or antibody fragments specific for antigens or molecules on cancer cells (CD166) and to methods of use thereof. Binding proteins comprising specific heavy and light chain CDRs are disclosed wherein the binding protein shows a measurable or significant binding to breast cancer cell line MDA-MB 231 but shows insignificant or unmeasurable binding to granulocytes or peripheral blood lymphocytes (PBLs).

Abstract: The present invention provides a method of screening a library of molecules to identify and/or select one or more members thereof which are candidate binding partners for one or more ligands comprising: a) contacting an expression library in solution with one or more ligands; b) capturing ligands which have become bound to one or more members of the expression library onto a solid phase; and c) detecting the presence of a ligand, thereby detecting the presence of one or more members of the expression library which are candidate binding partners for the ligand.

Abstract: The present invention provides the amino acid and nucleic acid sequences of heavy and light chain complementarity determining regions of tumor specific binding proteins. In particular, the present invention provides an antibody which comprises at least one heavy chain variable region (VH) that comprises three CDRs, wherein said heavy chain variable region comprises: (i) a heavy chain CDR1 domain that comprises the amino acid sequence SYSMN (SEQ ID NO. 35), (ii) a heavy chain CDR2 domain that comprises the amino acid sequence SISSSSSYIYYADSVKG (SEQ ID NO. 39), and (iii) a heavy chain CDR3 domain that comprises the amino acid sequence SSGWYDGEFDP (SEQ ID NO: 40), wherein said antibody is capable of specifically binding to CD98hc or fragments of CD98hc.

Abstract: The present invention relates to an antibody expression library derived from a patient which has been immunochallenged with one or more foreign antigens associated with a particular disease or foreign agent, wherein said patients have been immunochallenged with the foreign antigens at a time point such that they still contain a repertoire of antibody producing cells which are enriched with cells producing antibodies directed to said foreign antigens associated with said disease or foreign agent, or at a time point such that they are still in an active phase of immune response to said foreign antigens associated with said disease or foreign agent. Methods of producing such expression libraries are also disclosed.

Abstract: The present invention is directed to an immunoglobulin light chain binding protein which comprises the amino acid sequence of SEQ ID NO:1 modified by an amino acid substitution at one or more of positions 39, 53 and 57 and/or by an amino acid insertion between positions 59 and 60 such that the dissociation constant (Kd) of the protein with respect to human immunoglobulin ?-chain is 400 nM or more at pH 8, or the amino acid sequence of a corresponding immunoglobulin light chain binding domain modified by an amino acid substitution at one or more of the positions equivalent to positions 39, 53 and 57 of SEQ ID NO:1 and/or by an amino acid insertion between positions equivalent to positions 59 and 60 of SEQ ID NO:1, such that the dissociation constant (Kd) of the protein with respect to human immunoglobulin ?-chain is 400 nM or more at pH 8, or the amino acid sequence of a fragment of (a) or (b) which contains at least one said substitution and/or insertion, such that the dissociation constant (Kd) of the protei

Abstract: The invention relates to sequences of protein L which bind to light chains of immunoglobulins. The invention also relates to hybrid proteins thereof which are able to bind to both light and heavy chains of immunoglobulin G, in particular protein LG. The invention also relates to DNA-sequences which code for the proteins, vectors which include such DNA-sequences, host cells which have been transformed with the vectors, methods for producing the proteins, reagent appliances for separation and identification of immunoglobulins, compositions and pharmaceutical compositions and pharmaceutical compositions which contain the proteins.

Abstract: The invention concerns the use of a coiled coil protein which is capable of forming a homodimer which dissociates into monomers on change of temperature, in a method of isolating a ligand or desired protein from a sample. A method of isolating a ligand which binds to the coiled coil protein is described as well as methods of isolating a desired protein which is tagged with a coiled coil protein or a ligand which binds to a coiled coil protein, or is tagged with a coiled coil protein monomer.