OS-9 / TRP channels
Name: Protein OS-9
(OS-9)
Official Symbol: OS9
provided by HGNC
Function:
Lectin which functions in endoplasmic reticulum (ER) quality control and ER-associated degradation (ERAD). May bind terminally misfolded non-glycosylated proteins as well as improperly folded glycoproteins, retain them in the ER, and possibly transfer them to the ubiquitination machinery and promote their degradation. Possible targets include TRPV4.
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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10956![]() |
Q13438![]() |
DIP-37493N![]() |
Q13438![]() |
MINT-1187753![]() |
116156![]() |
Q13438![]() |
hsa:10956![]() |
609677![]() |
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Mouse
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216440![]() |
Q8K2C7![]() |
MINT-4117264![]() |
229745![]() |
Q8K2C7![]() |
mmu:216440![]() |
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Rat
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362891![]() |
Q5RKH6![]() |
UNK-5447464![]() |
263807![]() |
Q5RKH6![]() |
rno:362891![]() |
Biological Process:
- GO:0030433
: ER-associated protein catabolic process
- GO:0006621
: protein retention in ER lumen
- GO:0042787
: protein ubiquitination involved in ubiquitin-dependent protein catabolic process
- GO:0034976
: response to endoplasmic reticulum stress
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 | |||
TRPV1 |
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OS-9 | Inference | Prediction | 17932042 | |||||
TRPV4 |
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OS-9 | Yeast two-hybrid | Mouse | 61-467 | Human | adult kidney | cDNA library | 17932042 |
(
:
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 | ||||
TRPV1 |
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OS-9 | Co-immunoprecipitation | HEK293T | Mouse | Full-length | Mouse | Full-length | 17932042 | |
TRPV4 |
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OS-9 | Co-immunofluorescence staining | SJSA-1 | Mouse | Full-length | Not used | 17932042 | ||
TRPV4 |
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OS-9 | Co-immunoprecipitation | HEK293T | Mouse | 61-467 | Human | 430-667 | 17932042 |
(
:
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 | ||||
TRPV4 |
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OS-9 | Co-immunoprecipitation | Mouse | 438-468 | Human | 430-667 | 17932042 |
(
:
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 | ||||||
TRPV4 |
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OS-9 | Cell surface biotinylation | Retain in the endoplasmic reticulum | 17932042 |
(
:
click the arrow icon to show interactions only between the corresponding TRP channel and the interactor)
