Patent ID: 7501121

Claim:
A purified molecule comprising a heavy chain immunoglobulin variable domain sequence and a light chain immunoglobulin variable domain that binds to IL-13 with a K D of less than 10 −7 M, wherein the heavy chain variable domain comprises the amino acid sequence of: (i) G-(YF)-(NT)-I-K-D-T-Y-(MI)-H (SEQ ID NO:48), in CDR1, (ii) (WR)-I-D-P-(GA)-N-D-N-I-K-Y-(SD)-(PQ)-K-F-Q-G (SEQ ID NO:49), in CDR2, and (iii) SEENWYDFFDY (SEQ ID NO:17), in CDR3; and wherein the light chain variable domain comprises the amino acid sequence of: (i) (RK)-S-S-Q-S-(LI)-(KV)-H-S-(ND)-G-N-(TN)-Y-L-(EDNQYAS) (SEQ ID NO:25), in CDR1, (ii) K-(LVI)-S-(NY)-(RW)-(FD)-S (SEQ ID NO:27), in CDR2, and (iii) Q-(GSA)-(ST)-(HEQ)-I-P (SEQ ID NO:28), in CDR3.