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 | 337 | 23 | 314 |
| Samples | 126 | 14 | 112 |
| Peptides | 34 | 12 | 25 |
Function
LTC4S · Leukotriene C4 synthase
The MAPEG (Membrane Associated Proteins in Eicosanoid and Glutathione metabolism) family includes a number of human proteins, several of which are involved the production of leukotrienes. This gene encodes an enzyme that catalyzes the first step in the biosynthesis of cysteinyl leukotrienes, potent biological compounds derived from arachidonic acid. Leukotrienes have been implicated as mediators of anaphylaxis and inflammatory conditions such as human bronchial asthma. This protein localizes to the nuclear envelope and adjacent endoplasmic reticulum. [provided by RefSeq, Jul 2008].
Isoforms & Proteins
3 transcripts · 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 |
|---|---|---|---|
| ENST00000292596 | Q16873 | 127 | 28 |
| ENST00000486713 | A0A286YF10* | 117 | 21 |
| ENST00000401985 | B5MCC3* | 93 | 7 |
Gene Properties
Recurrent Mutations
All 28 amino-acid changes on canonical ENST00000292596 · 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 LTC4S · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in LTC4S – 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 |
|---|---|---|
| Esophageal Squamous Cell Carcinoma | 0/51 0% | 71/2550 3% |
| T-Lymphoblastic Leukemia | 1/40 2% | 0/0 0% |
| Other Solid Cancers | 0/94 0% | 24/1515 2% |
| Acute Myeloid Leukemia | 1/90 1% | 0/0 0% |
| Glioblastoma | 1/98 1% | 0/0 0% |
| Endometrial Carcinoma | 4/42 10% | 1/612 0% |
| Germ Cell Tumour | 0/25 0% | 1/169 1% |
| Thyroid Gland Carcinoma | 0/45 0% | 5/1592 0% |
| Other Sarcomas | 1/69 1% | 1/699 0% |
| Bladder Carcinoma | 0/58 0% | 2/956 0% |
| Squamous Cell Lung Carcinoma | 0/57 0% | 1/810 0% |
| Head and Neck Carcinoma | 2/85 2% | 0/1574 0% |
| Melanoma | 0/210 0% | 2/1899 0% |
| Colorectal Carcinoma | 2/143 1% | 0/3239 0% |
| Non-Small Cell Lung Carcinoma | 1/304 0% | 0/1390 0% |
| Glioma | 0/52 0% | 1/2127 0% |
| Prostate Carcinoma | 0/13 0% | 1/2105 0% |
| Other Blood Cancers | 1/61 2% | 0/2725 0% |
| Hepatocellular Carcinoma | 0/46 0% | 1/2210 0% |
| B-Cell Non-Hodgkins Lymphoma | 0/88 0% | 1/2534 0% |
Mutation Distribution
Where LTC4S is mutated · all tissues, split by cell line vs tissue
How many mutations in LTC4S 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.
Mutations
All 337 mutations in LTC4S
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 |
|---|