Abstract: Described herein are modified integrin ? and/or ? headpiece polypeptides, and crystallizable integrin polypeptide dimers comprising a modified integrin ? and/or ? headpiece polypeptide and a disulfide bond linking the two integrin headpiece polypeptide subunits. Methods for using the modified integrin ? and/or ? headpiece polypeptides and the integrin polypeptide dimers are also provided herein. For example, methods for characterizing integrin-ligand interaction and identifying integrin ligands are also provided herein. In some embodiments, the identified integrin ligands can be used as inhibitors of integrins.

Abstract: Described herein are modified integrin ? and/or ? headpiece polypeptides, and crystallizable integrin polypeptide dimers comprising a modified integrin ? and/or ? headpiece polypeptide and a disulfide bond linking the two integrin headpiece polypeptide subunits. Methods for using the modified integrin ? and/or ? headpiece polypeptides and the integrin polypeptide dimers are also provided herein. For example, methods for characterizing integrin-ligand interaction and identifying integrin ligands are also provided herein. In some embodiments, the identified integrin ligands can be used as inhibitors of integrins.

Abstract: Disclosed are compositions and methods for modulating the activity of TGF-?. More particularly, compositions and methods for modulating the release of active TGF-? from an LRRC33-TGF-? prodomain-TGF-? ternary complex are provided, as are and methods of treatment based upon such modulation.

Abstract: Described herein are modified integrin ? and/or ? headpiece polypeptides, and crystallizable integrin polypeptide dimers comprising a modified integrin ? and/or ? headpiece polypeptide and a disulfide bond linking the two integrin headpiece polypeptide subunits. Methods for using the modified integrin ? and/or ? headpiece polypeptides and the integrin polypeptide dimers are also provided herein. For example, methods for characterizing integrin-ligand interaction and identifying integrin ligands are also provided herein. In some embodiments, the identified integrin ligands can be used as inhibitors of integrins.

Abstract: Described herein are modified integrin ? and/or ? headpiece polypeptides, and crystallizable integrin polypeptide dimers comprising a modified integrin ? and/or ? headpiece polypeptide and a disulfide bond linking the two integrin headpiece polypeptide subunits. Methods for using the modified integrin ? and/or ? headpiece polypeptides and the integrin polypeptide dimers are also provided herein. For example, methods for characterizing integrin-ligand interaction and identifying integrin ligands are also provided herein. In some embodiments, the identified integrin ligands can be used as inhibitors of integrins.

Abstract: The present invention provides growth factor-directed agents (GDAs), which act as either antagonists or agonists of cell signaling, particularly in the TGF-beta and related extracellular matrix signaling pathways. Such GDAs include monoclonal antibodies, fusion proteins and novel polypeptide compositions and/or conjugates of these compositions.

Abstract: Disclosed are compositions and methods for modulating the activity of TGF-?. More particularly, compositions and methods for modulating the release of active TGF-? from an LRRC33-TGF-? prodomain-TGF? ternary complex are provided, as are and methods of treatment based upon such modulation.

Abstract: Described herein are modified integrin ? and/or ? headpiece polypeptides, and crystallizable integrin polypeptide dimers comprising a modified integrin ? and/or ? headpiece polypeptide and a disulfide bond linking the two integrin headpiece polypeptide subunits. Methods for using the modified integrin ? and/or ? headpiece polypeptides and the integrin polypeptide dimers are also provided herein. For example, methods for characterizing integrin-ligand interaction and identifying integrin ligands are also provided herein. In some embodiments, the identified integrin ligands can be used as inhibitors of integrins.

Abstract: Described herein are modified integrin ? and/or ? headpiece polypeptides, and crystallizable integrin polypeptide dimers comprising a modified integrin ? and/or ? headpiece polypeptide and a disulfide bond linking the two integrin headpiece polypeptide subunits. Methods for using the modified integrin ? and/or ? headpiece polypeptides and the integrin polypeptide dimers are also provided herein. For example, methods for characterizing integrin-ligand interaction and identifying integrin ligands are also provided herein. In some embodiments, the identified integrin ligands can be used as inhibitors of integrins.

Abstract: The present invention provides growth factor-directed agents (GDAs), which act as either antagonists or agonists of cell signaling, particularly in the TGF-beta and related extracellular matrix signaling pathways. Such GDAs include monoclonal antibodies, fusion proteins and novel polypeptide compositions and/or conjugates of these compositions.