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 | 24 | 17 | 0 |
| Samples | 21 | 17 | 0 |
| Peptides | 23 | 16 | 0 |
Function
H3-3A · H3.3 histone A
Histones are basic nuclear proteins that are responsible for the nucleosome structure of the chromosomal fiber in eukaryotes. Two molecules of each of the four core histones (H2A, H2B, H3, and H4) form an octamer, around which approximately 146 bp of DNA is wrapped in repeating units, called nucleosomes. The linker histone, H1, interacts with linker DNA between nucleosomes and functions in the compaction of chromatin into higher order structures. This gene contains introns and its mRNA is polyadenylated, unlike most histone genes. The protein encoded is a replication-independent member of the histone H3 family. [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 |
|---|---|---|---|
| ENST00000366815 | P84243 | 24 | 23 |
Gene Properties
Recurrent Mutations
All 23 amino-acid changes on canonical ENST00000366815 · 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 H3-3A · cell line vs tissue
For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in H3-3A – 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 |
|---|---|---|
| Chronic Myelogenous Leukemia | 2/25 8% | 0/0 0% |
| T-Lymphoblastic Leukemia | 1/40 2% | 0/0 0% |
| Glioblastoma | 2/98 2% | 0/0 0% |
| Acute Myeloid Leukemia | 1/90 1% | 0/0 0% |
| Osteosarcoma | 2/45 4% | 0/166 0% |
| Neuroendocrine Tumour | 2/154 1% | 0/577 0% |
| Endometrial Carcinoma | 0/42 0% | 1/612 0% |
| Head and Neck Carcinoma | 1/85 1% | 0/1574 0% |
| Colorectal Carcinoma | 2/143 1% | 0/3239 0% |
| Non-Small Cell Lung Carcinoma | 0/304 0% | 1/1390 0% |
| Pancreatic Carcinoma | 0/89 0% | 1/1611 0% |
| Gastric Carcinoma | 0/74 0% | 1/1809 0% |
| Glioma | 1/52 2% | 0/2127 0% |
| B-Cell Non-Hodgkins Lymphoma | 1/88 1% | 0/2534 0% |
| B-Lymphoblastic Leukemia | 1/55 2% | 0/2640 0% |
| Esophageal Squamous Cell Carcinoma | 1/51 2% | 0/2550 0% |
Mutation Distribution
Where H3-3A is mutated · all tissues, split by cell line vs tissue
How many mutations in H3-3A 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 24 mutations in H3-3A
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 |
|---|