Recombinant Human Plakophilin 1 protein (His-DHFR tag N-Terminus)
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Recombinant Human Plakophilin 1 protein (His-DHFR tag N-Terminus) is a Human Fragment protein, in the 54 to 317 aa range, expressed in Escherichia coli, with >95%, suitable for SDS-PAGE.
View Alternative Names
Plakophilin-1, Band 6 protein, B6P, PKP1
Reactivity data
Sequence info
Properties and storage information
Shipped at conditions
Appropriate short-term storage conditions
Appropriate long-term storage conditions
Supplementary information
This supplementary information is collated from multiple sources and compiled automatically.
Biological function summary
This protein is a core part of desmosomal plaques which are thickened structures on the inner surface of cell membranes where desmosomes attach. Plakophilin 1 assists in linking the cadherin-catenin complex to intermediate filaments in the cytoskeleton promoting cell-cell adhesion. It is part of a larger protein complex that ensures mechanical strength and resilience across epithelial layers.
Pathways
Plakophilin 1 is involved in the assembly and organization of desmosomal junctions which are part of the broader adherens junction pathway. It interacts with several key proteins including desmoplakin and plakoglobin contributing to the stability and function of cell adhesions. These interactions are essential for maintaining the structural integrity and signaling capabilities of epithelial tissues.
Specifications
Form
Lyophilized
Additional notes
Purified via His tag
General info
Function
A component of desmosome cell-cell junctions which are required for positive regulation of cellular adhesion (PubMed : 23444369). Plays a role in desmosome protein expression regulation and localization to the desmosomal plaque, thereby maintaining cell sheet integrity and anchorage of desmosomes to intermediate filaments (PubMed : 10852826, PubMed : 23444369). Required for localization of DSG3 and YAP1 to the cell membrane in keratinocytes in response to mechanical strain, via the formation of an interaction complex composed of DSG3, YAP1, PKP1 and YWHAG (PubMed : 31835537). Positively regulates differentiation of keratinocytes, potentially via promoting localization of DSG1 at desmosome cell junctions (By similarity). Required for calcium-independent development and maturation of desmosome plaques specifically at lateral cell-cell contacts in differentiating keratinocytes (By similarity). Plays a role in the maintenance of DSG3 protein abundance, DSG3 clustering and localization of these clusters to the cell membrane in keratinocytes (By similarity). May also promote keratinocyte proliferation and morphogenesis during postnatal development (PubMed : 9326952). Required for tight junction inside-out transepidermal barrier function of the skin (By similarity). Promotes Wnt-mediated proliferation and differentiation of ameloblasts, via facilitating TJP1/ZO-1 localization to tight junctions (By similarity). Binds single-stranded DNA (ssDNA), and may thereby play a role in sensing DNA damage and promoting cell survival (PubMed : 20613778). Positively regulates cap-dependent translation and as a result cell proliferation, via recruitment of EIF4A1 to the initiation complex and promotion of EIF4A1 ATPase activity (PubMed : 20156963, PubMed : 23444369). Regulates the mRNA stability and protein abundance of desmosome components PKP2, PKP3, DSC2 and DSP, potentially via its interaction with FXR1 (PubMed : 25225333).
Sequence similarities
Belongs to the beta-catenin family.
Post-translational modifications
Phosphorylated by AKT2; required for interaction with YWHAG and subsequent localization away from desmosomes to the cytoplasm (By similarity). Phosphorylation of Ser-118 by AKT2 promotes PKP1-driven cap-dependent mRNA translation and decreases intercellular adhesion, phosphorylation is promoted by insulin (PubMed:23444369). Phosphorylation by RIPK4 at the N-terminus is required for its role in differentiation of keratinocytes and DSG1 localization at cell junctions (By similarity).
Subcellular localisation
Nucleus
Target data
Product promise
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