PRPSAP1

Phosphoribosyl pyrophosphate synthetase associated protein 1 Q14558-2 KPRA_HUMAN
Protein Coding Chr 17 17q25.1 Swiss-Prot reviewed Entrez 5635
Mutations
291
CL 37 · Tissue 251
Samples
161
CL 26 · Tissue 133
Peptides
129
unique mutant peptides
Transcripts
2
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
Mutations29137251
Samples16126133
Peptides12918111

Function

PRPSAP1 · Phosphoribosyl pyrophosphate synthetase associated protein 1

Enables identical protein binding activity. Predicted to be involved in 5-phosphoribose 1-diphosphate biosynthetic process and purine nucleotide biosynthetic process. Predicted to be part of ribose phosphate diphosphokinase complex. Predicted to be active in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

Isoforms & Proteins

2 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
ENST00000446526 Q14558-2 167 127
ENST00000324684 B4DP31* 124 101

Gene Properties

Type
Protein Coding
Chromosome
17
Cytoband
17q25.1
Entrez ID
Aliases
PAP39

Recurrent Mutations

All 127 amino-acid changes on canonical ENST00000446526 · 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 PRPSAP1 · 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 PRPSAP1 – 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
T-Lymphoblastic Leukemia
2/40 5%
0/0 0%
Endometrial Carcinoma
4/42 10%
13/612 2%
Oral Cavity Carcinoma
1/54 2%
0/0 0%
Other Sarcomas
2/69 3%
7/699 1%
Melanoma
0/210 0%
24/1899 1%
Burkitts Lymphoma
0/32 0%
2/196 1%
Hodgkins Lymphoma
0/16 0%
1/122 1%
Small Cell Lung Carcinoma
2/9 22%
3/752 0%
Other Solid Cancers
1/94 1%
9/1515 1%
Colorectal Carcinoma
5/143 4%
16/3239 0%
Germ Cell Tumour
0/25 0%
1/169 1%
Gastric Carcinoma
2/74 3%
7/1809 0%
Non-Small Cell Lung Carcinoma
3/304 1%
5/1390 0%
Mesothelioma
1/62 2%
0/165 0%
Bladder Carcinoma
0/58 0%
4/956 0%
Hepatocellular Carcinoma
0/46 0%
8/2210 0%
Thyroid Gland Carcinoma
0/45 0%
5/1592 0%
Glioma
0/52 0%
6/2127 0%
Squamous Cell Lung Carcinoma
0/57 0%
2/810 0%
Medulloblastoma
0/0 0%
1/450 0%
Cervical Carcinoma
0/35 0%
1/422 0%
Kidney Carcinoma
0/85 0%
4/1862 0%
Wilms Tumour
0/5 0%
1/474 0%
Esophageal Squamous Cell Carcinoma
0/51 0%
5/2550 0%
Esophageal Carcinoma
0/23 0%
1/769 0%
Pancreatic Carcinoma
0/89 0%
2/1611 0%
Head and Neck Carcinoma
0/85 0%
2/1574 0%
Biliary Tract Carcinoma
1/54 2%
0/950 0%
Breast Carcinoma
1/144 1%
2/3264 0%
Prostate Carcinoma
0/13 0%
1/2105 0%

Mutation Distribution

Where PRPSAP1 is mutated · all tissues, split by cell line vs tissue

Mutation counts by tissue
Mutation Distribution

How many mutations in PRPSAP1 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 291 mutations in PRPSAP1

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