CPZ

Carboxypeptidase Z Q66K79 CBPZ_HUMAN
Protein Coding Chr 4 4p16.1 Swiss-Prot reviewed Entrez 8532
Mutations
1,441
CL 216 · Tissue 1,225
Samples
514
CL 102 · Tissue 412
Peptides
356
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
Mutations1,4412161,225
Samples514102412
Peptides35668316

Function

CPZ · Carboxypeptidase Z

This gene encodes a member of the metallocarboxypeptidase family. This enzyme displays carboxypeptidase activity towards substrates with basic C-terminal residues. It is most active at neutral pH and is inhibited by active site-directed inhibitors of metallocarboxypeptidases. Alternative splicing in the coding region results in multiple transcript variants encoding 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
ENST00000360986 Q66K79 553 345
ENST00000315782 Q66K79-2 507 330
ENST00000382480 Q66K79-3 381 269

Gene Properties

Type
Protein Coding
Chromosome
4
Cytoband
4p16.1
Entrez ID

Recurrent Mutations

All 345 amino-acid changes on canonical ENST00000360986 · 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 CPZ · 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 CPZ – 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-Cell Non-Hodgkins Lymphoma
2/26 8%
0/0 0%
Gastrointestinal Stromal Tumour
0/0 0%
7/133 5%
Melanoma
11/210 5%
64/1899 3%
Endometrial Carcinoma
6/42 14%
16/612 3%
Squamous Cell Lung Carcinoma
5/57 9%
20/810 2%
Non-Small Cell Lung Carcinoma
19/304 6%
28/1390 2%
T-Lymphoblastic Leukemia
1/40 2%
0/0 0%
Colorectal Carcinoma
11/143 8%
68/3239 2%
Acute Myeloid Leukemia
2/90 2%
0/0 0%
Cervical Carcinoma
2/35 6%
7/422 2%
Neuroendocrine Tumour
9/154 6%
2/577 0%
Bladder Carcinoma
1/58 2%
14/956 1%
Small Cell Lung Carcinoma
0/9 0%
11/752 1%
Other Solid Cancers
2/94 2%
18/1515 1%
Gastric Carcinoma
3/74 4%
20/1809 1%
Plasma Cell Myeloma
3/44 7%
1/305 0%
Glioblastoma
1/98 1%
0/0 0%
Esophageal Carcinoma
0/23 0%
8/769 1%
Head and Neck Carcinoma
2/85 2%
13/1574 1%
Ovarian Carcinoma
3/109 3%
7/998 1%
Thyroid Gland Carcinoma
0/45 0%
14/1592 1%
Hodgkins Lymphoma
0/16 0%
1/122 1%
Hepatocellular Carcinoma
4/46 9%
12/2210 1%
Other Sarcomas
1/69 1%
4/699 1%
Esophageal Squamous Cell Carcinoma
2/51 4%
14/2550 1%
Glioma
0/52 0%
13/2127 1%
Biliary Tract Carcinoma
1/54 2%
5/950 1%
Pancreatic Carcinoma
3/89 3%
7/1611 0%
Kidney Carcinoma
1/85 1%
8/1862 0%
Burkitts Lymphoma
1/32 3%
0/196 0%

Mutation Distribution

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

Mutation counts by tissue
Mutation Distribution

How many mutations in CPZ 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 44 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 1,441 mutations in CPZ

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