Antibodies that bind tyrosyl-tRNA synthetases
Hematopoietic-modulating compositions are provided comprising aminoacyl-tRNA synthetase polypeptides, including active fragments and/or variants thereof, as well as compositions comprising related agents such as antibodies and other binding agents. Also provided are methods of using such compositions in the treatment of conditions that benefit from the modulation of hematopoiesis.
1. An isolated antibody that exhibits binding specificity for an isolated tyrosyl-tRNA synthetase (YRS) polypeptide of SEQ ID NO:1, 2 or 3, wherein affinity of the antibody for the YRS polypeptide of SEQ ID NO:2 or 3 is at least about 1.5× stronger than its affinity for the YRS polypeptide of SEQ ID NO:1.
2. The antibody of claim 1 , wherein affinity of the antibody for the YRS polypeptide of SEQ ID NO:2 or 3 is at least about 10× stronger than its affinity for the YRS polypeptide of SEQ ID NO:1.
3. The antibody of claim 1 , wherein the antibody is a monoclonal antibody.
4. The antibody of claim 1 , wherein the antibody is a polyclonal antibody.
5. The antibody of claim 4 , wherein the antibody is a rabbit antibody.