1fnh: Difference between revisions
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
[[Image:1fnh.gif|left|200px]] | [[Image:1fnh.gif|left|200px]] | ||
<!-- | |||
The line below this paragraph, containing "STRUCTURE_1fnh", creates the "Structure Box" on the page. | |||
You may change the PDB parameter (which sets the PDB file loaded into the applet) | |||
| | or the SCENE parameter (which sets the initial scene displayed when the page is loaded), | ||
| | or leave the SCENE parameter empty for the default display. | ||
--> | |||
{{STRUCTURE_1fnh| PDB=1fnh | SCENE= }} | |||
}} | |||
'''CRYSTAL STRUCTURE OF HEPARIN AND INTEGRIN BINDING SEGMENT OF HUMAN FIBRONECTIN''' | '''CRYSTAL STRUCTURE OF HEPARIN AND INTEGRIN BINDING SEGMENT OF HUMAN FIBRONECTIN''' | ||
| Line 30: | Line 27: | ||
[[Category: Sharma, A.]] | [[Category: Sharma, A.]] | ||
[[Category: Stuart, D I.]] | [[Category: Stuart, D I.]] | ||
[[Category: | [[Category: Heparin and integrin binding]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 16:32:13 2008'' | |||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | |||
Revision as of 16:32, 2 May 2008
CRYSTAL STRUCTURE OF HEPARIN AND INTEGRIN BINDING SEGMENT OF HUMAN FIBRONECTIN
OverviewOverview
The crystal structure of human fibronectin (FN) type III repeats 12-14 reveals the primary heparin-binding site, a clump of positively charged residues in FN13, and a putative minor site approximately 60 A away in FN14. The IDAPS motif implicated in integrin alpha4beta1 binding is at the FN13-14 junction, rendering the critical Asp184 inaccessible to integrin. Asp184 clamps the BC loop of FN14, whose sequence (PRARI) is reminiscent of the synergy sequence (PHSRN) of FN9. Mutagenesis studies prompted by this observation reveal that both arginines of the PRARI sequence are important for alpha4beta1 binding to FN12-14. The PRARI motif may represent a new class of integrin-binding sites. The spatial organization of the binding sites suggests that heparin and integrin may bind in concert.
About this StructureAbout this Structure
1FNH is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
ReferenceReference
Crystal structure of a heparin- and integrin-binding segment of human fibronectin., Sharma A, Askari JA, Humphries MJ, Jones EY, Stuart DI, EMBO J. 1999 Mar 15;18(6):1468-79. PMID:10075919 Page seeded by OCA on Fri May 2 16:32:13 2008