Surface AtlasMucinous colon cancer

CLDN3

Claudin-3. UniProt annotates extracellular residues 30–80, 137–159.

Predicted protein structure

A downloaded AlphaFold model connects the CLDN3 sequence to its predicted three-dimensional structure.

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RNA expression by cell type

Percentage of cells with detected CLDN3 RNA in the public colon adenocarcinoma cell groups.

Tumor cells49.1%
Dendritic cells10.5%
Macrophages (group B)8.8%
Endothelial cells8.1%
Fibroblasts7.9%
B cells7.3%
Macrophages (group A)5.8%
Natural killer cells5.7%
Regulatory T cells5.7%
Granulocytes5.7%
CD4 T cells5.1%
CD8 T cells4.3%
Adipocytes3.5%
RNA detection · Cancer Surfaceome Atlas, Table S6, row 233. Source study · Measurements (JSON)

Sequence & binding sites

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Sequence annotations and source records

Canonical sequence and topology

Target ID
T-ENSG00000165215
UniProt accession
O15551
Sequence state
available
Canonical sequence
Yes
Length in amino acids
220
Sequence SHA-256
0ba9b6b5e9b4d156e81521db8fb4d3e7cc60b100b6cbca960bdfd1c14ccf5b68
View and select the full canonical sequence
Sequence positions 1–220

Gray shows the full canonical sequence. Colored spans mark the listed intervals.

Membrane-spanning segments
9–29: Helical81–101: Helical116–136: Helical160–180: Helical
9–29 (Helical); 81–101 (Helical); 116–136 (Helical); 160–180 (Helical)
Source-annotated domains
1–8: Cytoplasmic30–80: Extracellular102–115: Cytoplasmic137–159: Extracellular181–220: Cytoplasmic
1–8 (Cytoplasmic); 30–80 (Extracellular); 102–115 (Cytoplasmic); 137–159 (Extracellular); 181–220 (Cytoplasmic)
Source-annotated extracellular intervals
30–80137–159
30–80; 137–159

UniProt annotates the following extracellular intervals.

One-based positions include both interval endpoints.
StartEndLengthSequence and source
308051
Sequence and source
Basis
reviewed-uniprot-topological-domain
Evidence class
source-annotated-topology
Sequence SHA-256
9769419fc3ee6b524725551640d250d928862422115b9f908be622bbd24386d1
13715923
Sequence and source
Basis
reviewed-uniprot-topological-domain
Evidence class
source-annotated-topology
Sequence SHA-256
6b85d1e093676a6524c6fe39e9ac31935d15a5e7ddb830279bad8af90fd79a0a
Sequence and topology sources
Source role
canonical-sequence
Source
alphafold-db-canonical-uniprot-field
Extracted field
uniprotSequence
Source row accession
Not recorded

Download source snapshot

Open sequence source
Source role
reviewed-topology
Source
UniProt reviewed human surface-field snapshot
Extracted field
Not recorded
Source row accession
O15551

Download source snapshot (gzip)

subcellular_location
SUBCELLULAR LOCATION: Cell junction, tight junction {ECO:0000269|PubMed:28028216, ECO:0000269|PubMed:30734065}. Cell membrane {ECO:0000269|PubMed:28028216}; Multi-pass membrane protein {ECO:0000255}.
transmembrane
TRANSMEM 9..29; /note="Helical"; /evidence="ECO:0000255"; TRANSMEM 81..101; /note="Helical"; /evidence="ECO:0000255"; TRANSMEM 116..136; /note="Helical"; /evidence="ECO:0000255"; TRANSMEM 160..180; /note="Helical"; /evidence="ECO:0000255"
topological_domain
TOPO_DOM 1..8; /note="Cytoplasmic"; /evidence="ECO:0000255"; TOPO_DOM 30..80; /note="Extracellular"; /evidence="ECO:0000255"; TOPO_DOM 102..115; /note="Cytoplasmic"; /evidence="ECO:0000255"; TOPO_DOM 137..159; /note="Extracellular"; /evidence="ECO:0000255"; TOPO_DOM 181..220; /note="Cytoplasmic"; /evidence="ECO:0000255"
signal_peptide
Not recorded
lipidation
Not recorded

Download all canonical target sequences (FASTA)

Protein identity and location

Protein
Claudin-3
Protein location
Transmembrane protein
Canonical sequence
O15551 · 220 amino acids
Extracellular region
UniProt annotates extracellular residues 30–80, 137–159.

Expression in normal tissues

RNA specificity
Tissue enhanced
RNA distribution
Detected in many
RNA tissue-specific nTPM
intestine: 248.6; pancreas: 92.7; thyroid gland: 110.9
Protein specificity
Group enriched
Protein distribution
Detected in some
Immunohistochemistry reliability
Enhanced
Immunofluorescence reliability
Supported
Protein tissue-specific intensity
fallopian tube: 6,323,381.4; intestine: 7,054,165.0
Tissue cell-type enrichment
Breast - Breast glandular cells, Colon - Colon enterocytes, Minor Salivary Gland - Minor salivary glandular cells, Prostate - Prostate glandular cells, Skin - Eccrine sweat gland cells, Stomach - Gastric enteroendocrine cells
Subcellular location
Cell Junctions

Structures

A predicted target model is available.

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Sources and downloads

CLDN3 · ENSG00000165215 · O15551

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