View source for 6osn


==Potent and Selective Antitumor Antibody Targeting a Membrane-Proximal Epitope of ROR2==
<StructureSection load='6osn' size='340' side='right'caption='[[6osn]], [[Resolution|resolution]] 1.08&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6osn]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6OSN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6OSN FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.083&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6osn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6osn OCA], [https://pdbe.org/6osn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6osn RCSB], [https://www.ebi.ac.uk/pdbsum/6osn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6osn ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Antibodies are widely used as cancer therapeutics, but their current use is limited by the low number of antigens restricted to cancer cells. A receptor tyrosine kinase, receptor tyrosine kinase-like orphan receptor 2 (ROR2), is normally expressed only during embryogenesis and is tightly down-regulated in postnatal healthy tissues, but is up-regulated in a diverse set of hematologic and solid malignancies. Thus, ROR2 represents a candidate antigen for antibody-based cancer therapy. Here we describe the affinity maturation and humanization of a rabbit mAb that binds human and mouse ROR2 but not human ROR1 or other human cell-surface antigens. Co-crystallization of the parental rabbit mAb in complex with the human ROR2 kringle domain (hROR2-Kr) guided affinity maturation by heavy chain complementarity-determining region 3 (HCDR3)-focused mutagenesis and selection. The affinity-matured rabbit mAb was then humanized by complementarity-determining region (CDR) grafting and framework fine tuning, and again co-crystallized with hROR2-Kr. We show that the affinity matured and humanized mAb retains strong affinity and specificity to ROR2 and, following conversion to a T-cell engaging bispecific antibody, has potent cytotoxicity toward ROR2-expressing cells. We anticipate that this humanized affinity matured mAb will find application for antibody-based cancer therapy of ROR2-expressing neoplasms.

Affinity maturation, humanization, and co-crystallization of a rabbit anti-human ROR2 monoclonal antibody for therapeutic applications.,Goydel RS, Weber J, Peng H, Qi J, Soden J, Freeth J, Park H, Rader C J Biol Chem. 2020 Mar 19. pii: RA120.012791. doi: 10.1074/jbc.RA120.012791. PMID:32193207<ref>PMID:32193207</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6osn" style="background-color:#fffaf0;"></div>

==See Also==
*[[Monoclonal Antibodies 3D structures|Monoclonal Antibodies 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Park H]]
[[Category: Rader C]]