PMID- 16537482 OWN - NLM STAT- MEDLINE DCOM- 20060425 LR - 20220129 IS - 0027-8424 (Print) IS - 1091-6490 (Electronic) IS - 0027-8424 (Linking) VI - 103 IP - 11 DP - 2006 Mar 14 TI - Structural basis of hepatocyte growth factor/scatter factor and MET signalling. PG - 4046-51 AB - The polypeptide growth factor, hepatocyte growth factor/scatter factor (HGF/SF), shares the multidomain structure and proteolytic mechanism of activation of plasminogen and other complex serine proteinases. HGF/SF, however, has no enzymatic activity. Instead, it controls the growth, morphogenesis, or migration of epithelial, endothelial, and muscle progenitor cells through the receptor tyrosine kinase MET. Using small-angle x-ray scattering and cryo-electron microscopy, we show that conversion of pro(single-chain)HGF/SF into the active two-chain form is associated with a major structural transition from a compact, closed conformation to an elongated, open one. We also report the structure of a complex between two-chain HGF/SF and the MET ectodomain (MET928) with 1:1 stoichiometry in which the N-terminal and first kringle domain of HGF/SF contact the face of the seven-blade beta-propeller domain of MET harboring the loops connecting the beta-strands b-c and d-a, whereas the C-terminal serine proteinase homology domain binds the opposite "b" face. Finally, we describe a complex with 2:2 stoichiometry between two-chain HGF/SF and a truncated form of the MET ectodomain (MET567), which is assembled around the dimerization interface seen in the crystal structure of the NK1 fragment of HGF/SF and displays the features of a functional, signaling unit. The study shows how the proteolytic mechanism of activation of the complex proteinases has been adapted to cell signaling in vertebrate organisms, offers a description of monomeric and dimeric ligand-receptor complexes, and provides a foundation to the structural basis of HGF/SF-MET signaling. FAU - Gherardi, Ermanno AU - Gherardi E AD - Medical Research Council Centre and Laboratory of Molecular Biology, Hills Road, Cambridge CB2 2QH, United Kingdom. egherard@mrc-lmb.cam.ac.uk FAU - Sandin, Sara AU - Sandin S FAU - Petoukhov, Maxim V AU - Petoukhov MV FAU - Finch, John AU - Finch J FAU - Youles, Mark E AU - Youles ME FAU - Ofverstedt, Lars-Goran AU - Ofverstedt LG FAU - Miguel, Ricardo N AU - Miguel RN FAU - Blundell, Tom L AU - Blundell TL FAU - Vande Woude, George F AU - Vande Woude GF FAU - Skoglund, Ulf AU - Skoglund U FAU - Svergun, Dmitri I AU - Svergun DI LA - eng SI - PDB/2CED SI - PDB/2CEE SI - PDB/2CEG SI - PDB/2CEW GR - G9704528/MRC_/Medical Research Council/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060306 PL - United States TA - Proc Natl Acad Sci U S A JT - Proceedings of the National Academy of Sciences of the United States of America JID - 7505876 RN - 0 (Multiprotein Complexes) RN - 0 (Recombinant Proteins) RN - 67256-21-7 (Hepatocyte Growth Factor) RN - EC 2.7.10.1 (Proto-Oncogene Proteins c-met) SB - IM MH - Animals MH - Cell Line MH - Cryoelectron Microscopy MH - Dimerization MH - Dogs MH - Hepatocyte Growth Factor/*chemistry/genetics/*metabolism/pharmacology MH - Mice MH - Models, Molecular MH - Multiprotein Complexes MH - Protein Structure, Quaternary MH - Proto-Oncogene Proteins c-met/chemistry/genetics/*metabolism MH - Recombinant Proteins/chemistry/genetics/metabolism/pharmacology MH - Scattering, Radiation MH - Signal Transduction MH - X-Rays PMC - PMC1449643 COIS- Conflict of interest statement: No conflicts declared. EDAT- 2006/03/16 09:00 MHDA- 2006/04/28 09:00 PMCR- 2006/09/14 CRDT- 2006/03/16 09:00 PHST- 2006/03/16 09:00 [pubmed] PHST- 2006/04/28 09:00 [medline] PHST- 2006/03/16 09:00 [entrez] PHST- 2006/09/14 00:00 [pmc-release] AID - 0509040103 [pii] AID - 1398 [pii] AID - 10.1073/pnas.0509040103 [doi] PST - ppublish SO - Proc Natl Acad Sci U S A. 2006 Mar 14;103(11):4046-51. doi: 10.1073/pnas.0509040103. Epub 2006 Mar 6.