background:
Acts in a Rho-dependent manner to recruit PFY1 to the membrane. Required for the assembly of F-actin structures, such as actin cables and stress fibers. Nucleates actin filaments. Binds to the barbed end of the actin filament and slows down actin polymerization and depolymerization. Required for cytokinesis, and transcriptional activation of the serum response factor. DFR proteins couple Rho and Src tyrosine kinase during signaling and the regulation of actin dynamics. Functions as a scaffold protein for MAPRE1 and APC to stabilize microtubules and promote cell migration (By similarity). Has neurite outgrowth promoting activity (By similarity). In hear cells, it may play a role in the regulation of actin polymerization in hair cells. The MEMO1-RHOA-DIAPH1 signaling pathway plays an important role in ERBB2-dependent stabilization of microtubules at the cell cortex. It controls the localization of APC and CLASP2 to the cell membrane, via the regulation of GSK3B activity. In turn, membrane-bound APC allows the localization of the MACF1 to the cell membrane, which is required for microtubule capture and stabilization.
Function:
Acts in a Rho-dependent manner to recruit PFY1 to the membrane. Required for the assembly of F-actin structures, such as actin cables and stress fibers. Nucleates actin filaments. Binds to the barbed end of the actin filament and slows down actin polymerization and depolymerization. Required for cytokinesis, and transcriptional activation of the serum response factor. DFR proteins couple Rho and Src tyrosine kinase during signaling and the regulation of actin dynamics. Functions as a scaffold protein for MAPRE1 and APC to stabilize microtubules and promote cell migration (By similarity). Has neurite outgrowth promoting activity (By similarity). In hear cells, it may play a role in the regulation of actin polymerization in hair cells. The MEMO1-RHOA-DIAPH1 signaling pathway plays an important role in ERBB2-dependent stabilization of microtubules at the cell cortex. It controls the localization of APC and CLASP2 to the cell membrane, via the regulation of GSK3B activity. In turn, membrane-bound APC allows the localization of the MACF1 to the cell membrane, which is required for microtubule capture and stabilization. Plays a role in the regulation of cell morphology and cytoskeletal organization. Required in the control of cell shape.
Subunit:
Homodimer. Interacts with the GTP-bound form of RHOA. Interacts with RHOC, PFY1, MAPRE1, BAIAP2 and APC. Interacts with SCAI. Interacts with DCAF7. Interacts with NCDN.
Subcellular Location:
Cell membrane. Cell projection, ruffle membrane. Cytoplasm, cytoskeleton.
Tissue Specificity:
Expressed in brain, heart, placenta, lung, kidney, pancreas, liver, skeletal muscle and cochlea.
DISEASE:
Defects in DIAPH1 are the cause of deafness autosomal dominant type 1 (DFNA1) [MIM:12980]. DFNA1 is a form of sensorineural hearing loss. Sensorineural deafness results from damage to the neural receptors of the inner ear, the nerve pathways to the brain, or the area of the brain that receives sound information.
Similarity:
Expressed in brain, heart, placenta, lung, kidney, pancreas, liver, skeletal muscle and cochlea.
Database links:
UniProtKB/Swiss-Prot: O60610.2
Entrez Gene: 1729 Human
Entrez Gene: 13367 Mouse
Omim: 602121 Human
SwissProt: O60610 Human
SwissProt: O01768 Mouse
Unigene: 529451 Human
Unigene: 195916 Mouse
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
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