PPP3R1

Protein phosphatase 3 regulatory subunit B, alpha P63098 CANB1_HUMAN
Protein Coding Chr 2 2p14 Swiss-Prot reviewed Entrez 5534
Mutations
161
CL 16 · Tissue 145
Samples
55
CL 8 · Tissue 47
Peptides
48
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
Mutations16116145
Samples55847
Peptides48544

Function

PPP3R1 · Protein phosphatase 3 regulatory subunit B, alpha

Enables cyclosporin A binding activity; phosphatase binding activity; and protein domain specific binding activity. Involved in calcineurin-NFAT signaling cascade and positive regulation of transcription by RNA polymerase II. Part of calcineurin complex. Implicated in Alzheimer's disease and dilated cardiomyopathy. [provided by Alliance of Genome Resources, Apr 2022]

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
ENST00000234310 P63098 57 44
ENST00000409752 D3YTA9* 53 43
ENST00000409377 F6U1T9* 51 41

Gene Properties

Type
Protein Coding
Chromosome
2
Cytoband
2p14
Entrez ID
Aliases
CALNB1CNBCNB1

Recurrent Mutations

All 44 amino-acid changes on canonical ENST00000234310 · 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 PPP3R1 · 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 PPP3R1 – 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
1/42 2%
3/612 0%
Non-Small Cell Lung Carcinoma
1/304 0%
7/1390 0%
Burkitts Lymphoma
0/32 0%
1/196 1%
Colorectal Carcinoma
4/143 3%
8/3239 0%
Bladder Carcinoma
2/58 3%
0/956 0%
Prostate Carcinoma
0/13 0%
4/2105 0%
Melanoma
0/210 0%
4/1899 0%
Small Cell Lung Carcinoma
0/9 0%
1/752 0%
Other Sarcomas
0/69 0%
1/699 0%
Thyroid Gland Carcinoma
0/45 0%
2/1592 0%
Squamous Cell Lung Carcinoma
0/57 0%
1/810 0%
Gastric Carcinoma
0/74 0%
2/1809 0%
Breast Carcinoma
0/144 0%
3/3264 0%
Esophageal Squamous Cell Carcinoma
0/51 0%
2/2550 0%
Other Blood Cancers
0/61 0%
2/2725 0%
Head and Neck Carcinoma
0/85 0%
1/1574 0%
Kidney Carcinoma
0/85 0%
1/1862 0%
Glioma
0/52 0%
1/2127 0%
Hepatocellular Carcinoma
0/46 0%
1/2210 0%
B-Cell Non-Hodgkins Lymphoma
0/88 0%
1/2534 0%
B-Lymphoblastic Leukemia
0/55 0%
1/2640 0%

Mutation Distribution

Where PPP3R1 is mutated · all tissues, split by cell line vs tissue

Mutation counts by tissue
Mutation Distribution

How many mutations in PPP3R1 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 161 mutations in PPP3R1

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