DDR1
Epithelial discoidin domain-containing receptor 1
Also known as: CAK, CD167, DDR1_HUMAN, EDDR1, NEP, NTRK4, PTK3A, RTK6
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q08345
- Gene
- DDR1
- Ensembl
- ENSG00000204580
- Chromosome
- 6
- Canonical length
- 913 aa
- Protein class
- CD markers, Enzymes, Predicted intracellular proteins, Predicted membrane proteins
- Subcellular location
- Nucleoplasm,Plasma membrane,Cytosol
- Secretome location
- Intracellular and membrane
- Quaternary structure
- Homodimer
OverviewNCBI Gene
Receptor tyrosine kinases play a key role in the communication of cells with their microenvironment. These kinases are involved in the regulation of cell growth, differentiation and metabolism. The protein encoded by this gene belongs to a subfamily of tyrosine kinase receptors with homology to Dictyostelium discoideum protein discoidin I in their extracellular domain, and that are activated by various types of collagen. Expression of this protein is restricted to epithelial cells, particularly in the kidney, lung, gastrointestinal tract, and brain. In addition, it has been shown to be significantly overexpressed in several human tumors. Alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Feb 2011]
Canonical amino-acid sequenceUniProt
913 residues, UniProt reviewed canonical sequence.
>Q08345|DDR1
1 MGPEALSSLL LLLLVASGDA DMKGHFDPAK CRYALGMQDR TIPDSDISAS SSWSDSTAAR
61 HSRLESSDGD GAWCPAGSVF PKEEEYLQVD LQRLHLVALV GTQGRHAGGL GKEFSRSYRL
121 RYSRDGRRWM GWKDRWGQEV ISGNEDPEGV VLKDLGPPMV ARLVRFYPRA DRVMSVCLRV
181 ELYGCLWRDG LLSYTAPVGQ TMYLSEAVYL NDSTYDGHTV GGLQYGGLGQ LADGVVGLDD
241 FRKSQELRVW PGYDYVGWSN HSFSSGYVEM EFEFDRLRAF QAMQVHCNNM HTLGARLPGG
301 VECRFRRGPA MAWEGEPMRH NLGGNLGDPR ARAVSVPLGG RVARFLQCRF LFAGPWLLFS
361 EISFISDVVN NSSPALGGTF PPAPWWPPGP PPTNFSSLEL EPRGQQPVAK AEGSPTAILI
421 GCLVAIILLL LLIIALMLWR LHWRRLLSKA ERRVLEEELT VHLSVPGDTI LINNRPGPRE
481 PPPYQEPRPR GNPPHSAPCV PNGSALLLSN PAYRLLLATY ARPPRGPGPP TPAWAKPTNT
541 QAYSGDYMEP EKPGAPLLPP PPQNSVPHYA EADIVTLQGV TGGNTYAVPA LPPGAVGDGP
601 PRVDFPRSRL RFKEKLGEGQ FGEVHLCEVD SPQDLVSLDF PLNVRKGHPL LVAVKILRPD
661 ATKNARNDFL KEVKIMSRLK DPNIIRLLGV CVQDDPLCMI TDYMENGDLN QFLSAHQLED
721 KAAEGAPGDG QAAQGPTISY PMLLHVAAQI ASGMRYLATL NFVHRDLATR NCLVGENFTI
781 KIADFGMSRN LYAGDYYRVQ GRAVLPIRWM AWECILMGKF TTASDVWAFG VTLWEVLMLC
841 RAQPFGQLTD EQVIENAGEF FRDQGRQVYL SRPPACPQGL YELMLRCWSR ESEQRPPFSQ
901 LHRFLAEDAL NTVLocalizationUniProt · AlphaFold · HPA
Whether an antibody against DDR1 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Cell surface
- Secreted
- No
- Transmembrane segments
- 1
- Mean surface accessibility (rSASA)
- 0.35
- Highest tissue expression
- 168 nTPM
Expression across tissuesHPA
Tissue
- spinal cord: 168 nTPM
- esophagus: 144 nTPM
- midbrain: 143 nTPM
- salivary gland: 127 nTPM
- skin: 117 nTPM
- amygdala: 108 nTPM
Single-cell type
- ependymal cells: 101 nCPM
- oligodendrocyte progenitor cells: 98 nCPM
- astrocytes: 92 nCPM
- oligodendrocytes: 79 nCPM
- papillary tip epithelial cells: 52 nCPM
- renal collecting duct intercalated cells: 52 nCPM
Immune cell
- naive CD8 T-cell: 0.3 nTPM
- gdT-cell: 0.2 nTPM
- naive B-cell: 0.2 nTPM
- naive CD4 T-cell: 0.2 nTPM
- total PBMC: 0.2 nTPM
- MAIT T-cell: 0.1 nTPM
Brain region
- medulla oblongata: 201 nTPM
- white matter: 170 nTPM
- cerebellum: 152 nTPM
- basal ganglia: 148 nTPM
- midbrain: 148 nTPM
- thalamus: 143 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about DDR1.
Disease | ImmuneIEDB
Conditions an epitope on DDR1 was assayed in.
- prostate cancer T cell
- breast cancer T cell
- ovarian cancer T cell
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 0.58
- gnomAD pLI
- 0
- gnomAD missense Z
- 2.22
- DepMap mean gene effect
- 0.08
- DepMap dependency class
- none
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 5% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- axon development
- branching involved in mammary gland duct morphogenesis
- cell adhesion
- cell population proliferation
- cell surface receptor protein tyrosine kinase signaling pathway
- collagen-activated tyrosine kinase receptor signaling pathway
- ear development
- embryo implantation
- lactation
- mammary gland alveolus development
- negative regulation of cell population proliferation
- neuron projection extension
- peptidyl-tyrosine autophosphorylation
- positive regulation of neuron projection development
- positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction
- protein autophosphorylation
- regulation of cell growth
- regulation of cell-matrix adhesion
- regulation of extracellular matrix disassembly
- smooth muscle cell migration
- smooth muscle cell-matrix adhesion
- wound healing, spreading of cells
Molecular functions
- ATP binding
- collagen binding
- metal ion binding
- protein tyrosine kinase collagen receptor activity
- transmembrane receptor protein tyrosine kinase activity
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Coagulation factor 5/8, C-terminal domain
- Protein kinase domain
- Serine-threonine/tyrosine-protein kinase, catalytic domain
- Tyrosine-protein kinase, receptor class II, conserved site
- Tyrosine-protein kinase, active site
- Galactose-binding-like domain superfamily
- Protein kinase-like domain superfamily
- Tyrosine-protein kinase, catalytic domain
- Discoidin domain-containing receptor 1/2, DS-like domain
- Receptor Tyrosine Kinase
- F5/8 type C domain
- Protein tyrosine and serine/threonine kinase
- Discoidin domain-containing receptor 1/2, DS-like domain
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of DDR1 in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads DDR1 as an antibody target. Whether an autoantibody or antibody against DDR1 could matter depends on whether native DDR1 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
DDR1 is annotated at the cell surface, where native DDR1 is exposed to circulating antibodies and is a prime autoantibody target that could block, deplete, or overstimulate it.
Annotation status
The present source text does not explicitly label DDR1 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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