GRB2-associated-binding protein 2 is a protein

Protein

Proteins are biochemical compounds consisting of one or more polypeptides typically folded into a globular or fibrous form, facilitating a biological function. A polypeptide is a single linear polymer chain of amino acids bonded together by peptide bonds between the carboxyl and amino groups of...

 that in humans is encoded by the GAB2 gene

Gene

A gene is a molecular unit of heredity of a living organism. It is a name given to some stretches of DNA and RNA that code for a type of protein or for an RNA chain that has a function in the organism. Living beings depend on genes, as they specify all proteins and functional RNA chains...

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The protein encoded by this gene, GAB2 is an adaptor protein

Adaptor protein

Signal transducing adaptor proteins are proteins which are accessory to main proteins in a signal transduction pathway. These proteins tend to lack any intrinsic enzymatic activity themselves but instead mediate specific protein–protein interactions that drive the formation of protein complexes...

 serving as principal activator of Phosphatidylinositol 3-kinase. 10 SNPs of GAB2 gene have been found in one study to associate with risk of Alzheimer's disease

Alzheimer's disease

Alzheimer's disease also known in medical literature as Alzheimer disease is the most common form of dementia. There is no cure for the disease, which worsens as it progresses, and eventually leads to death...

 in the carriers of ApoE4 allele.

Interactions

GAB2 has been shown to interact

Protein-protein interaction

Protein–protein interactions occur when two or more proteins bind together, often to carry out their biological function. Many of the most important molecular processes in the cell such as DNA replication are carried out by large molecular machines that are built from a large number of protein...

 with PTPN11

PTPN11

Tyrosine-protein phosphatase non-receptor type 11 also known as protein-tyrosine phosphatase 1D or protein-tyrosine phosphatase 2C is an enzyme that in humans is encoded by the PTPN11 gene. PTPN11 is a protein tyrosine phosphatase Shp2.PTPN11 is a member of the protein tyrosine phosphatase ...

, PLCG2

PLCG2

1-phosphatidylinositol-4,5-bisphosphate phosphodiesterase gamma-2 is an enzyme that in humans is encoded by the PLCG2 gene.- Function :Enzymes of the phospholipase C family catalyze the hydrolysis of phospholipids to yield diacylglycerols and water-soluble phosphorylated derivatives of the lipid...

, RICS

RICS (gene)

Rho GTPase-activating protein 32 is a protein that in humans is encoded by the RICS gene. RICS has two known isoforms, RICS that are expressed primarily at neurite growth cones, and at the post synaptic membranes, and PX-RICS which is more widely expressed in the endoplasmic reticulum, Golgi...

, Grb2

Grb2

Growth factor receptor-bound protein 2 also known as Grb2 is an adaptor protein involved in signal transduction/cell communication. In humans, the GRB2 protein is encoded by the GRB2 gene....

, PIK3R1

PIK3R1

Phosphatidylinositol 3-kinase regulatory subunit alpha is an enzyme that in humans is encoded by the PIK3R1 gene.-Interactions:PIK3R1 has been shown to interact with EPH receptor A2, KHDRBS1, Lymphocyte cytosolic protein 2, Janus kinase 2, GAB2, CD117, BCAR1, CD28, SHB, EZR, PIK3CD, GAB1, HRAS,...

, CRKL

CRKL

Crk-like protein is a protein that in humans is encoded by the CRKL gene.CrkL together with Crk participates in the Reelin signaling cascade downstream of DAB1.-Interactions:...

, AKT1

AKT1

RAC-alpha serine/threonine-protein kinase is an enzyme that in humans is encoded by the AKT1 gene. Multiple alternatively spliced transcript variants have been found for this gene.- Function :...

 and SHC1

SHC1

SHC-transforming protein 1 is a protein that in humans is encoded by the SHC1 gene. SHC has been found to be important in the regulation of apoptosis and drug resistance in mammalian cells....

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External links

• Scientists find new dementia gene - BBC News, 9 June 2007.