Crystal structure of streptavidin mutant with low immunogenicityKawato, T., Mizohata, E., Meshizuka, T., Doi, H., Kawamura, T., Matsumura, H., Yumura, K., Tsumoto, K., Kodama, T., Inoue, T., Sugiyama, A.
(2014) J.Biosci.Bioeng. --: --
- PubMed: 25434833
- DOI: 10.1016/j.jbiosc.2014.10.025
- Primary Citation of Related Structures:
- PubMed Abstract:
We previously created a low-immunogenic core streptavidin mutant No. 314 (LISA-314) by replacing six amino-acid residues for use as a delivery tool for an antibody multistep pre-targeting process (Yumura et al., Protein Sci., 22, 213-221, 2013). Here ...
We previously created a low-immunogenic core streptavidin mutant No. 314 (LISA-314) by replacing six amino-acid residues for use as a delivery tool for an antibody multistep pre-targeting process (Yumura et al., Protein Sci., 22, 213-221, 2013). Here, we performed high-resolution X-ray structural analyses of LISA-314 and wild-type streptavidin to investigate the effect of substitutions on the protein function and the three-dimensional structure. LISA-314 forms a tetramer in the same manner as wild-type streptavidin. The binding mode of d-biotin in LISA-314 is also completely identical to that in wild-type streptavidin, and conformational changes were observed mostly at the side chains of substituted sites. Any large conformational changes corresponding to the reduction of B factors around the substituted sites were not observed. These results demonstrated the LISA-314 acquired low immunogenicity without losing structural properties of original wild-type streptavidin.
Radioisotope Center, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan. Electronic address: firstname.lastname@example.org.,Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.,Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo 108-8639, Japan; Department of Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8562, Japan.,Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo 153-8904, Japan.