Provided are compositions comprising newly identified protein fragments of aminoacyl-tRNA synthetases, polynucleotides that encode them and complements thereof, related agents, and methods of use thereof in diagnostic, drug discovery, research, and therapeutic applications.

Isolated histidyl-tRNA synthetase splice variant polynucleotides and polypeptides having non-canonical biological activities are provided, as well as compositions and methods related thereto.

Isolated histidyl-tRNA synthetase splice variant polynucleotides and polypeptides having non-canonical biological activities are provided, as well as compositions and methods related thereto.

Inflammatory and other cellular response-modulating compositions are provided comprising aminoacyl-tRNA synthetase polypeptides, including active fragments and/or variants thereof. Also provided are methods of using such compositions in the treatment of conditions that benefit from the modulation of inflammation, such as inflammatory diseases or conditions.

Provided are compositions comprising newly identified protein fragments of aminoacyl-tRNA synthetases, polynucleotides that encode them and complements thereof, related agents, and methods of use thereof in diagnostic, drug discovery, research, and therapeutic applications.

The present invention provides histidyl-tRNA synthetase and Fc region conjugate polypeptides (HRS-Fc conjugates), such as HRS-Fc fusion polypeptides, compositions comprising the same, and methods of using such conjugates and compositions for treating or diagnosing a variety of conditions. The HRS-Fc conjugates of the invention have improved controlled release properties, stability, half-life, and other pharmacokinetic and biological properties relative to corresponding, unmodified HRS polypeptides.

Inflammatory and other cellular response-modulating compositions are provided comprising aminoacyl-tRNA synthetase polypeptides, including active fragments and/or variants thereof. Also provided are methods of using such compositions in the treatment of conditions that benefit from the modulation of inflammation, such as inflammatory diseases or conditions.

Provided are compositions comprising newly identified protein fragments of aminoacyl-tRNA synthetases, polynucleotides that encode them and complements thereof, related agents, and methods of use thereof in diagnostic, drug discovery, research, and therapeutic applications.

Isolated histidyl-tRNA synthetase splice variant polynucleotides and polypeptides having non-canonical biological activities are provided, as well as compositions and methods related thereto.

Isolated polypeptides comprising or consisting essentially of specific structural motifs (e.g., three -sheets and two -helices) are provided, wherein the polypeptides exhibit at least one cell signaling and/or other non-canonical activity of biological relevance. Also provided are polynucleotides encoding such polypeptides, binding agents that bind such polypeptides, analogs, variants and fragments of such polypeptides, etc., as well as compositions and methods of identifying and using any of the foregoing.