TMEM123

Transmembrane protein 123 Q8N131 PORIM_HUMAN
Protein Coding Chr 11 11q22.2 Swiss-Prot reviewed Entrez 114908
Mutations
165
CL 35 · Tissue 130
Samples
72
CL 18 · Tissue 54
Peptides
56
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
Mutations16535130
Samples721854
Peptides561146

Function

TMEM123 · Transmembrane protein 123

This gene encodes a highly glycosylated transmembrane protein with a high content of threonine and serine residues in its extracellular domain, similar to a broadly defined category of proteins termed mucins. Exposure of some cell types to anti-PORIMIN (pro-oncosis receptor inducing membrane injury) antibody, crosslinks this protein on the cell surface and induces a type of cell death termed oncosis. Oncosis is distinct from apoptosis and is characterized by a loss of cell membrane integrity without DNA fragmentation. This gene product is proposed to function as a cell surface receptor that mediates cell death. [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
ENST00000398136 Q8N131 74 52
ENST00000361236 Q8N131-2 59 45
ENST00000532161 E9PKT4* 32 29

Gene Properties

Type
Protein Coding
Chromosome
11
Cytoband
11q22.2
Entrez ID
Aliases
KCT3PORIMINPORMIN

Recurrent Mutations

All 51 amino-acid changes on canonical ENST00000398136 · 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 TMEM123 · 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 TMEM123 – 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
Endometrial Carcinoma
3/42 7%
6/612 1%
Acute Myeloid Leukemia
1/90 1%
0/0 0%
Non-Small Cell Lung Carcinoma
4/304 1%
3/1390 0%
Bladder Carcinoma
0/58 0%
4/956 0%
Thyroid Gland Carcinoma
0/45 0%
6/1592 0%
Colorectal Carcinoma
0/143 0%
10/3239 0%
Gastric Carcinoma
0/74 0%
5/1809 0%
Other Solid Cancers
0/94 0%
4/1515 0%
Esophageal Carcinoma
0/23 0%
2/769 0%
Medulloblastoma
0/0 0%
1/450 0%
B-Cell Non-Hodgkins Lymphoma
4/88 5%
1/2534 0%
Breast Carcinoma
3/144 2%
2/3264 0%
Hepatocellular Carcinoma
0/46 0%
3/2210 0%
Other Sarcomas
0/69 0%
1/699 0%
Non-Cancerous
1/104 1%
0/830 0%
Ovarian Carcinoma
0/109 0%
1/998 0%
B-Lymphoblastic Leukemia
2/55 4%
0/2640 0%
Pancreatic Carcinoma
0/89 0%
1/1611 0%
Head and Neck Carcinoma
0/85 0%
1/1574 0%
Prostate Carcinoma
0/13 0%
1/2105 0%
Melanoma
0/210 0%
1/1899 0%
Kidney Carcinoma
0/85 0%
1/1862 0%

Mutation Distribution

Where TMEM123 is mutated · all tissues, split by cell line vs tissue

Mutation counts by tissue
Mutation Distribution

How many mutations in TMEM123 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 165 mutations in TMEM123

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