2uzi: Difference between revisions

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[[Image:2uzi.gif|left|200px]]
{{Seed}}
[[Image:2uzi.png|left|200px]]


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{{STRUCTURE_2uzi|  PDB=2uzi  |  SCENE=  }}  
{{STRUCTURE_2uzi|  PDB=2uzi  |  SCENE=  }}  


'''CRYSTAL STRUCTURE OF HRAS(G12V)- ANTI-RAS FV COMPLEX'''
===CRYSTAL STRUCTURE OF HRAS(G12V)- ANTI-RAS FV COMPLEX===




==Overview==
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Many disease-related processes occur via protein complexes that are considered undruggable with small molecules. An example is RAS, which is frequently mutated in cancer and contributes to initiation and maintenance of the disease by constitutive signal transduction through protein interaction with effector proteins, like PI3K, RAF and RALGDS. Such protein interactions are therefore significant targets for therapy. We describe a single immunoglobulin variable region domain that specifically binds to activated GTP-bound RAS and prevents RAS-dependent tumorigenesis in a mouse model. The crystal structure of the immunoglobulin-RAS complex shows that the variable region competitively binds to the conformationally variant regions of RAS, where its signalling effector molecules interact. This allows the plasma membrane targeted single domain intrabody to inhibit signalling by mutant RAS. This mode of action is a novel advance to directly interfere with oncogenic RAS function in human cancer and shows a universally applicable approach to develop macromolecules to combat cancer. In addition, this method illustrates a general means for interfering with protein interactions that are commonly considered intractable as conventional drug targets.
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==About this Structure==
==About this Structure==
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[[Category: Signal transduction]]
[[Category: Signal transduction]]
[[Category: Signaling protein/immune system]]
[[Category: Signaling protein/immune system]]
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Revision as of 07:01, 28 July 2008

File:2uzi.png

Template:STRUCTURE 2uzi

CRYSTAL STRUCTURE OF HRAS(G12V)- ANTI-RAS FV COMPLEXCRYSTAL STRUCTURE OF HRAS(G12V)- ANTI-RAS FV COMPLEX

Template:ABSTRACT PUBMED 17568777

About this StructureAbout this Structure

2UZI is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.

ReferenceReference

Tumour prevention by a single antibody domain targeting the interaction of signal transduction proteins with RAS., Tanaka T, Williams RL, Rabbitts TH, EMBO J. 2007 Jul 11;26(13):3250-9. Epub 2007 Jun 14. PMID:17568777

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