EXO1

Exonuclease 1 Q9UQ84 EXO1_HUMAN
Protein Coding Chr 1 1q43 Swiss-Prot reviewed Entrez 9156
Mutations
1,432
CL 199 · Tissue 1,216
Samples
438
CL 84 · Tissue 346
Peptides
329
unique mutant peptides
Transcripts
3
isoforms mutated

Stats by Source

Total, split by cell line (COSMIC CL / DepMap / PubMed) vs tissue (COSMIC primary tissue)

How the counts split by source
Stats by Source

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.

TotalCell lineTissue
Mutations1,4321991,216
Samples43884346
Peptides32960275

Function

EXO1 · Exonuclease 1

This gene encodes a protein with 5' to 3' exonuclease activity as well as an RNase H activity. It is similar to the Saccharomyces cerevisiae protein Exo1 which interacts with Msh2 and which is involved in mismatch repair and recombination. Alternative splicing of this gene results in three transcript variants encoding two different isoforms. [provided by RefSeq, Jul 2008].

Isoforms & Proteins

3 transcripts · UniProt mapping is sequence-verified (AA-safe)

About the isoform mapping
Isoforms & Proteins

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.

TranscriptUniProtMutationsPeptides
ENST00000366548 Q9UQ84 512 326
ENST00000348581 Q9UQ84 469 312
ENST00000518483 Q9UQ84-4 451 296

Gene Properties

Type
Protein Coding
Chromosome
1
Cytoband
1q43
Entrez ID
Aliases
HEX1hExoI

Recurrent Mutations

All 326 amino-acid changes on canonical ENST00000366548 · needle height = samples · drag the mini-map to zoom

What this lollipop shows
Recurrent Mutations

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 EXO1 · cell line vs tissue

How this frequency is counted
Cancer-type mutation frequency

For each cancer type, the fraction of samples that carry at least one missense/complex mutation anywhere in EXO1 – 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 typeCell linesTissue samples
Chronic Myelogenous Leukemia
2/25 8%
0/0 0%
Gastrointestinal Stromal Tumour
0/0 0%
7/133 5%
Glioblastoma
3/98 3%
0/0 0%
Endometrial Carcinoma
3/42 7%
16/612 3%
Non-Small Cell Lung Carcinoma
18/304 6%
31/1390 2%
Rhabdomyosarcoma
1/33 3%
4/171 2%
Hodgkins Lymphoma
0/16 0%
3/122 2%
Squamous Cell Lung Carcinoma
4/57 7%
14/810 2%
Melanoma
3/210 1%
36/1899 2%
Colorectal Carcinoma
12/143 8%
50/3239 2%
Bladder Carcinoma
0/58 0%
17/956 2%
Neuroendocrine Tumour
9/154 6%
3/577 1%
Gastric Carcinoma
4/74 5%
25/1809 1%
Small Cell Lung Carcinoma
0/9 0%
9/752 1%
Acute Myeloid Leukemia
1/90 1%
0/0 0%
Germ Cell Tumour
0/25 0%
2/169 1%
Ewings Sarcoma
1/63 2%
2/262 1%
Ovarian Carcinoma
4/109 4%
6/998 1%
Mesothelioma
2/62 3%
0/165 0%
Burkitts Lymphoma
0/32 0%
2/196 1%
Cervical Carcinoma
0/35 0%
4/422 1%
Other Solid Cancers
1/94 1%
13/1515 1%
Non-Cancerous
0/104 0%
7/830 1%
Hepatocellular Carcinoma
1/46 2%
15/2210 1%
Medulloblastoma
0/0 0%
3/450 1%
Pancreatic Carcinoma
5/89 6%
6/1611 0%
Thyroid Gland Carcinoma
0/45 0%
10/1592 1%
Head and Neck Carcinoma
1/85 1%
9/1574 1%
Breast Carcinoma
1/144 1%
17/3264 1%
Esophageal Carcinoma
0/23 0%
4/769 1%

Mutation Distribution

Where EXO1 is mutated · all tissues, split by cell line vs tissue

Mutation counts by tissue
Mutation Distribution

How many mutations in EXO1 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

GTEx Portal ↗
About the expression data
GTEx Expression

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 1,432 mutations in EXO1

About the mutation list
Mutations

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.

IDSampleTranscriptAA Change CDSTypeSourceMutant PeptideWild-type Peptide