SMCR8 — SMCR8-C9orf72 complex subunit
SMCR8 belongs to a gene co-expression module in 1 of 28 SCUBA cell types. Each module groups genes that rise and fall together in that cell type; the genes it shares a module with are its closest co-expression partners there.
SMCR8's module in each cell type
| Cell type | Module | Shares the module with | |
|---|---|---|---|
| Macrophages | RNA Processing Housekeeping Housekeeping | CISD3, CNIH4, DDX52, DPH3, EXOSC6, FABP5, GTF2E2, IKBKE +20 more | View in SCUBA |
About the gene
| Synonyms | DENND8A, FLJ34716 |
|---|---|
| Chromosome | 17: 18315293-18328056 |
| Predicted location | Intracellular |
| Essential gene | No |
| Protein class | Predicted intracellular proteins |
| Molecular function | Guanine-nucleotide releasing factor |
| Biological process | Autophagy, Transcription, Transcription regulation |
Function
Component of the C9orf72-SMCR8 complex, a complex that has guanine nucleotide exchange factor (GEF) activity and regulates autophagy. In the complex, C9orf72 and SMCR8 probably constitute the catalytic subunits that promote the exchange of GDP to GTP, converting inactive GDP-bound RAB8A and RAB39B into their active GTP-bound form, thereby promoting autophagosome maturation. The C9orf72-SMCR8 complex also acts as a negative regulator of autophagy initiation by interacting with the ULK1/ATG1 kinase complex and inhibiting its protein kinase activity. As part of the C9orf72-SMCR8 complex, stimulates RAB8A and RAB11A GTPase activity in vitro. Acts as a regulator of mTORC1 signaling by promoting phosphorylation of mTORC1 substrates. In addition to its activity in the cytoplasm within the C9orf72-SMCR8 complex, SMCR8 also localizes in the nucleus, where it associates with chromatin and negatively regulates expression of suppresses ULK1 and WIPI2 genes.
Human Protein Atlas · Open Targets · UniProt
Gene annotation from the Human Protein Atlas and UniProt; see sources & licences.