1bht: Difference between revisions
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[[Image:1bht.gif|left|200px]] | [[Image:1bht.gif|left|200px]] | ||
'''NK1 FRAGMENT OF HUMAN HEPATOCYTE GROWTH FACTOR''' | {{Structure | ||
|PDB= 1bht |SIZE=350|CAPTION= <scene name='initialview01'>1bht</scene>, resolution 2.0Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene> and <scene name='pdbligand=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID'>EPE</scene> | |||
|ACTIVITY= | |||
|GENE= | |||
}} | |||
'''NK1 FRAGMENT OF HUMAN HEPATOCYTE GROWTH FACTOR''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1BHT is a [ | 1BHT is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BHT OCA]. | ||
==Reference== | ==Reference== | ||
Crystal structure of the NK1 fragment of human hepatocyte growth factor at 2.0 A resolution., Ultsch M, Lokker NA, Godowski PJ, de Vos AM, Structure. 1998 Nov 15;6(11):1383-93. PMID:[http:// | Crystal structure of the NK1 fragment of human hepatocyte growth factor at 2.0 A resolution., Ultsch M, Lokker NA, Godowski PJ, de Vos AM, Structure. 1998 Nov 15;6(11):1383-93. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9817840 9817840] | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: kringle]] | [[Category: kringle]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 10:11:14 2008'' | ||
Revision as of 08:11, 20 March 2008
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| 1bht, resolution 2.0Å | |||||||||||||
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| Ligands: | SO4 and EPE | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
NK1 FRAGMENT OF HUMAN HEPATOCYTE GROWTH FACTOR
Overview
BACKGROUND: Hepatocyte growth factor (HGF) is a mitogen for hepatocytes and has also been implicated as an epithelial morphogen in tumor invasion. HGF activates its specific cellular receptor, c-met, through an aggregation mechanism potentiated by heparan sulfate glycosaminoglycans. HGF consists of an N-terminal (N) domain, four kringle domains (the first of which carries receptor-binding determinants), and an inactive serine-protease-like domain. NK1, a naturally occurring fragment of HGF, acts as an antagonist of HGF in the absence of heparin. RESULTS: The N domain of NK1 consists of a central five-stranded antiparallel beta sheet flanked by an alpha helix and a two-stranded beta ribbon. The overall N domain structure in the context of the NK1 fragment is similar to the structure of the isolated domain; two lysines and an arginine residue coordinate a bound sulfate ion. The NK1 kringle domain is homologous to kringle 4 from plasminogen, except that the lysine-binding pocket is altered by the insertion of a glycine residue. Here, a HEPES molecule is bound in the pocket. The asymmetric unit of the crystal contains a 'head-to-tail' NK1 dimer. We use this dimer to propose a model of the NK2 fragment of HGF. CONCLUSIONS: A cluster of exposed lysine and arginine residues in or near the hairpin-loop region of the N domain might form part of the NK1 heparin-binding site. In our NK2 model, both kringle domains pack loosely against the N domain, and a long, positively charged groove lines the interface. This groove might be involved in glycosaminoglycan binding. The HGF receptor-binding determinants are clustered near the binding pocket of the first kringle domain, opposite the N domain.
Disease
Known diseases associated with this structure: Fibromatosis, gingival OMIM:[182530], Noonan syndrome 4 OMIM:[182530]
About this Structure
1BHT is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Crystal structure of the NK1 fragment of human hepatocyte growth factor at 2.0 A resolution., Ultsch M, Lokker NA, Godowski PJ, de Vos AM, Structure. 1998 Nov 15;6(11):1383-93. PMID:9817840
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