Stats by Source
Total, split by cell line (COSMIC CL / DepMap / PubMed) vs tissue (COSMIC primary tissue)
Total = all mutations for this gene across every source.
Cell line = COSMIC Cell Lines Project + DepMap + PubMed.
Tissue = COSMIC primary-tissue (patient tumour) samples.
Total can exceed cell line + tissue: COSMIC tissue-derived models sit only in global, and a peptide can be shared across both.
| Total | Cell line | Tissue | |
|---|---|---|---|
| Mutations | 291 | 49 | 241 |
| Samples | 276 | 47 | 228 |
| Peptides | 211 | 33 | 185 |
Function
GTPBP4 · GTP binding protein 4
GTP-binding proteins are GTPases and function as molecular switches that can flip between two states: active, when GTP is bound, and inactive, when GDP is bound. 'Active' in this context usually means that the molecule acts as a signal to trigger other events in the cell. When an extracellular ligand binds to a G-protein-linked receptor, the receptor changes its conformation and switches on the trimeric G proteins that associate with it by causing them to eject their GDP and replace it with GTP. The switch is turned off when the G protein hydrolyzes its own bound GTP, converting it back to GDP. But before that occurs, the active protein has an opportunity to diffuse away from the receptor and deliver its message for a prolonged period to its downstream target. [provided by RefSeq, Jul 2008].
Isoforms & Proteins
1 transcript · UniProt mapping is sequence-verified (AA-safe)
Each Ensembl transcript (ENST) this gene is mutated on, with its matched UniProt accession.
The mapping is sequence-verified: the UniProt sequence is identical to the transcript translation, so amino-acid positions line up exactly. A * marks an unreviewed (TrEMBL) entry.
Counts are mutations and unique mutant peptides on each transcript.
| Transcript | UniProt | Mutations | Peptides |
|---|---|---|---|
| ENST00000360803 | Q9BZE4 | 291 | 211 |
Gene Properties
Recurrent Mutations
All 211 amino-acid changes on canonical ENST00000360803 · needle height = samples · drag the mini-map to zoom
A lollipop / needle plot – the standard way to show recurrent mutations along a protein (as used by cBioPortal and MutationMapper).
X-axis = amino-acid position in the protein.
Needle height & head size = how often that exact amino-acid change was observed (its recurrence). Tall/large heads are mutational hotspots.
The most recurrent changes are labelled; hover any needle for the change, position and counts.
Mutation frequency across cancer types
% of samples with a missense/complex mutation in GTPBP4 · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in GTPBP4 – counted as distinct samples (a sample counts once no matter how many mutations it has).
Split into cell line and tissue; each cell shows mutated / total and the percentage. Cohorts with <20 samples are omitted. Ordered by combined frequency.
| Cancer type | Cell lines | Tissue samples |
|---|---|---|
| T-Lymphoblastic Leukemia | 2/40 5% | 0/0 0% |
| Endometrial Carcinoma | 1/42 2% | 16/612 3% |
| Hodgkins Lymphoma | 2/16 12% | 1/122 1% |
| Mesothelioma | 4/62 6% | 0/165 0% |
| Melanoma | 3/210 1% | 28/1899 1% |
| Colorectal Carcinoma | 9/143 6% | 32/3239 1% |
| Non-Small Cell Lung Carcinoma | 3/304 1% | 17/1390 1% |
| Squamous Cell Lung Carcinoma | 2/57 4% | 8/810 1% |
| Small Cell Lung Carcinoma | 0/9 0% | 7/752 1% |
| Adrenocortical Carcinoma | 0/3 0% | 1/112 1% |
| Non-Cancerous | 0/104 0% | 7/830 1% |
| Neuroendocrine Tumour | 4/154 3% | 1/577 0% |
| Other Solid Cancers | 2/94 2% | 8/1515 1% |
| Bladder Carcinoma | 2/58 3% | 4/956 0% |
| Gastric Carcinoma | 0/74 0% | 11/1809 1% |
| Plasma Cell Myeloma | 1/44 2% | 1/305 0% |
| Ovarian Carcinoma | 0/109 0% | 6/998 1% |
| Germ Cell Tumour | 0/25 0% | 1/169 1% |
| Biliary Tract Carcinoma | 0/54 0% | 5/950 1% |
| Rhabdomyosarcoma | 0/33 0% | 1/171 1% |
| Head and Neck Carcinoma | 0/85 0% | 8/1574 1% |
| Osteosarcoma | 1/45 2% | 0/166 0% |
| Kidney Carcinoma | 3/85 4% | 6/1862 0% |
| Cervical Carcinoma | 0/35 0% | 2/422 0% |
| Burkitts Lymphoma | 0/32 0% | 1/196 1% |
| Meningioma | 0/3 0% | 1/252 0% |
| Esophageal Squamous Cell Carcinoma | 0/51 0% | 10/2550 0% |
| Glioma | 0/52 0% | 8/2127 0% |
| Hepatocellular Carcinoma | 0/46 0% | 8/2210 0% |
| Ewings Sarcoma | 0/63 0% | 1/262 0% |
Mutation Distribution
Where GTPBP4 is mutated · all tissues, split by cell line vs tissue
How many mutations in GTPBP4 were found in each tissue, across the whole database.
Each bar is a tissue (cell-line and tissue names are merged to the standard tissue), split into cell line and tissue (patient tumour) contributions.
This shows the cancer-context where this gene is recurrently altered.
GTEx Expression
Median TPM across 54 healthy tissues
Median gene expression (TPM) in normal, non-cancer human tissues from the GTEx project.
Useful for judging tumour specificity – a strong neoantigen target ideally comes from a gene with low expression in healthy tissues.
Scroll or drag the mini-axis below the chart to browse all tissues.
Mutations
All 291 mutations in GTPBP4
Every mutation record for this gene, across all samples and sources.
The Sample column links to the cell line (cell-line samples) or the tissue type (tissue samples).
Use the Type / Source filters, the search box, and column sorting to explore; each CAN-IMMUNE ID opens the full mutation & peptide view.
| ID | Sample | Transcript | AA Change | CDS | Type | Source | Mutant Peptide | Wild-type Peptide |
|---|