1h0d
From Proteopedia
CRYSTAL STRUCTURE OF HUMAN ANGIOGENIN IN COMPLEX WITH FAB FRAGMENT OF ITS MONOCLONAL ANTIBODY MAB 26-2F
Overview
The murine monoclonal antibody 26-2F neutralizes the angiogenic and ribonucleolytic activities of human angiogenin (ANG) and is highly effective in preventing the establishment and metastatic dissemination of human tumors in athymic mice. Here we report a 2.0 A resolution crystal structure for the complex of ANG with the Fab fragment of 26-2F that reveals the detailed interactions between ANG and the complementarity-determining regions (CDRs) of the antibody. Surprisingly, Fab binding induces a dramatic conformational change in the cell binding region of ANG at the opposite end of the molecule from the combining site; crosslinking experiments indicate that this rearrangement also occurs in solution. The ANG-Fab complex structure should be invaluable for designing maximally humanized versions of 26-2F for potential clinical use.
About this Structure
1H0D is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
The crystal structure of human angiogenin in complex with an antitumor neutralizing antibody., Chavali GB, Papageorgiou AC, Olson KA, Fett JW, Hu G, Shapiro R, Acharya KR, Structure. 2003 Jul;11(7):875-85. PMID:12842050 Page seeded by OCA on Fri May 2 18:15:21 2008
