MCWHIRTER, John,MACDONALD, Lynn,MARTIN, Joel, H.,MURPHY, Andrew, J.
申请号：
DK13714127
公开号：
DK2825037T3
申请日:
2013.03.15
申请国别(地区):
DK
年份:
2019
代理人:
摘要：
Genetically modified non-human animals are provided that express an immunoglobulin variable domain that comprises at least one histidine, wherein the at least one histidine is encoded by a substitution of a non-histidine codon in the germline of the animal with a hisidine codon, or the insertion of a histidine codon in a germline immunoglobulin nucleic acid sequence. Immunoglobulin genes comprising histidines in one or more CDRs, in an N-terminal region, andor in a loop 4 region are also provided. Immunoglobulin variable domains comprising one or more histidines (e.g., histidne clusters) substituted for non-antigen-binding non-histidine residues. Non-human animals that are progeny of animals comprising modified heavy chain variable loci (V, D, J segments), modified light chain variable loci (V, J segments), and rearranged germline light chain genes (VJ sequences) are also provided. Non-human animals that make immunoglobulin domains that bind antigens in a pH-sensitive manner are provided.
