Macromolecule Content

• Total Structure Weight: 6274.08 
• Atom Count: 430 
• Residue Count: 52 
• Unique protein chains: 1

1FAQ

RAF-1 CYSTEINE RICH DOMAIN, NMR, 27 STRUCTURES

• DOI: 10.2210/pdb1FAQ/pdb

• Classification: SERINE/THREONINE PROTEIN KINASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 1996-09-05 Released: 1997-01-27 
• Deposition Author(s): Mott, H.R., Campbell, S.L.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Submitted: 27 

Literature

The solution structure of the Raf-1 cysteine-rich domain: a novel ras and phospholipid binding site.

Mott, H.R., Carpenter, J.W., Zhong, S., Ghosh, S., Bell, R.M., Campbell, S.L.

(1996) Proc.Natl.Acad.Sci.USA 93: 8312-8317

• PubMed: 8710867 
• Primary Citation of Related Structures:  
  1FAR


• PubMed Abstract: 
  

The Raf-1 protein kinase is the best-characterized downstream effector of activated Ras. Interaction with Ras leads to Raf-1 activation and results in transduction of cell growth and differentiation signals. The details of Raf-1 activation are unclear, but our characterization of a second Ras-binding site in the cysteine-rich domain (CRD) and the involvement of both Ras-binding sites in effective Raf-1-mediated transformation provides insight into the molecular aspects and consequences of Ras-Raf interactions. The Raf-1 CRD is a member of an emerging family of domains, many of which are found within signal transducing proteins. Several contain binding sites for diacylglycerol (or phorbol esters) and phosphatidylserine and are believed to play a role in membrane translocation and enzyme activation. The CRD from Raf-1 does not bind diacylglycerol but interacts with Ras and phosphatidylserine. To investigate the ligand-binding specificities associated with CRDs, we have determined the solution structure of the Raf-1 CRD using heteronuclear multidimensional NMR. We show that there are differences between this structure and the structures of two related domains from protein kinase C (PKC). The differences are confined to regions of the CRDs involved in binding phorbol ester in the PKC domains. Since phosphatidylserine is a common ligand, we expect its binding site to be located in regions where the structures of the Raf-1 and PKC domains are similar. The structure of the Raf-1 CRD represents an example of this family of domains that does not bind diacylglycerol and provides a framework for investigating its interactions with other molecules.

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Organizational Affiliation: 

Department of Biochemistry and Biophysics, Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill 27599, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
RAF-1	A	52	Homo sapiens	Mutation(s): 0  Gene Names: RAF1 (RAF) EC: 2.7.11.1
Find proteins for P04049 (Homo sapiens) Go to Gene View: RAF1 Go to UniProtKB:  P04049

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
ZN	A	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Submitted: 27 
• Olderado: 1FAQ Olderado

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1996-09-05 
• Released Date: 1997-01-27 
• Deposition Author(s): Mott, H.R., Campbell, S.L.

Revision History 

• Version 1.0: 1997-01-27
  Type: Initial release
• Version 1.1: 2008-03-24
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance