PIRT / TRP channels
Name: Phosphoinositide-interacting protein
(PIRT)
Official Symbol: PIRT
provided by HGNC
Function:
Regulatory subunit of TRPV1, a molecular sensor of noxious heat and capsaicin. Positively regulates TRPV1 channel activity via phosphatidylinositol 4,5-bisphosphate (PIP2). Binds various phosphoinositide, including phosphatidylinositol 4,5-bisphosphate (PIP2), but not phosphatidylinositol (PI) (By similarity).
Source: Reorganizing the protein space at the Universal Protein Resource (UniProt)
Nucleic Acids Res. 40: D71-D75 (2012).
Species |
External DB
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Entrez Gene | UniprotKB | DIP | IntAct | MINT | BioGRID | STRING | IUPHAR-DB | KEGG | OMIM | |
Human
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644139![]() |
P0C851![]() |
569345![]() |
P0C851![]() |
hsa:644139![]() |
612068![]() |
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Mouse
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193003![]() |
Q8BFY0![]() |
228722![]() |
Q8BFY0![]() |
mmu:193003![]() |
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Rat
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497929![]() |
D4A4M4![]() |
269239![]() |
rno:497929![]() |
Biological Process:
No information in Gene Ontology
Source: The Gene Ontology Consortium. Gene ontology: tool for the unification of biology. Nat. Genet.. May 2000;25(1):25-9.
World Wide Web URL: http://www.geneontology.org/
World Wide Web URL: http://www.geneontology.org/
Disease:
No information in OMIM
Source: Online Mendelian Inheritance in Man, OMIM®. McKusick-Nathans Institute of Genetic Medicine,
Johns Hopkins University (Baltimore, MD), May, 2012.
World Wide Web URL: http://omim.org/
World Wide Web URL: http://omim.org/
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Screening
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Experimental screening | Non-experimental screening | Reference | ||||||||
TRP channel construct | Interactor source | |||||||||
TRP channel | Interactor | Method | Species | Region | Species | Organ/tissue | Sample type | |||
TRPM8 |
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PIRT | Inference | Prediction | 18455988 | |||||
TRPV1 |
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PIRT | Inference | Prediction | 18455988 |
(
:
click the arrow icon to show interactions only between the corresponding TRP channel and the interactor)

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Validation: In vivo validation
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Assay with endogenous proteins | Assay with overexpressed proteins | Reference | ||||||||
Cell or tissue | Cell or tissue | TRP channel construct | Interactor construct | |||||||
TRP channel | Interactor | Method | Species | Region | Species | Region | ||||
TRPM8 |
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PIRT | Co-immunoprecipitation | HEK293 | Not specified | Full-length | Mouse | Full-length | 18455988 | |
TRPV1 |
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PIRT | Co-immunoprecipitation | HEK293 | Rat | Full-length | Mouse | Full-length | 18455988 |
(
:
click the arrow icon to show interactions only between the corresponding TRP channel and the interactor)

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Characterization
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Binding region mapping | Stoichiometry | Affinity (Kd) | Reference | |||||||
TRP channel | Interactor | |||||||||
TRP channel | Interactor | Method | Species | Region | Species | Region | ||||
TRPM8 |
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PIRT | Co-immunoprecipitation | Not specified | Not determined | Mouse | 110-135 | 18455988 | ||
TRPV1 |
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PIRT | Co-immunoprecipitation | Rat | Not determined | Mouse | 110-135 | 18455988 |
(
:
click the arrow icon to show interactions only between the corresponding TRP channel and the interactor)

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Functional consequence
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TRP channel | Interactor | Method | Post-translational modification | Subcellular trafficking | Activity | Reference | ||||||
TRPV1 |
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PIRT | Patch clamp | Activation | 18455988 |
(
:
click the arrow icon to show interactions only between the corresponding TRP channel and the interactor)
