UniProtKB - O94907 (DKK1_HUMAN)
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Protein
Dickkopf-related protein 1
Gene
DKK1
Organism
Homo sapiens (Human)
Status
Functioni
Antagonizes canonical Wnt signaling by inhibiting LRP5/6 interaction with Wnt and by forming a ternary complex with the transmembrane protein KREMEN that promotes internalization of LRP5/6 (PubMed:22000856). DKKs play an important role in vertebrate development, where they locally inhibit Wnt regulated processes such as antero-posterior axial patterning, limb development, somitogenesis and eye formation. In the adult, Dkks are implicated in bone formation and bone disease, cancer and Alzheimer disease (PubMed:17143291). Inhibits the pro-apoptotic function of KREMEN1 in a Wnt-independent manner, and has anti-apoptotic activity (By similarity).1 PublicationBy similarity1 Publication
GO - Molecular functioni
- co-receptor binding Source: ParkinsonsUK-UCL
- growth factor activity Source: ProtInc
- low-density lipoprotein particle receptor binding Source: MGI
- receptor antagonist activity Source: BHF-UCL
- signal transducer activity Source: ProtInc
GO - Biological processi
- cell morphogenesis involved in differentiation Source: Ensembl
- embryonic limb morphogenesis Source: Ensembl
- endoderm formation Source: Ensembl
- face morphogenesis Source: Ensembl
- forebrain development Source: Ensembl
- hair follicle development Source: Ensembl
- learning or memory Source: ARUK-UCL
- limb development Source: UniProtKB
- mesoderm formation Source: Ensembl
- modulation of age-related behavioral decline Source: ARUK-UCL
- motor learning Source: Ensembl
- negative regulation of apoptotic process Source: UniProtKB
- negative regulation of BMP signaling pathway Source: Ensembl
- negative regulation of canonical Wnt signaling pathway Source: ParkinsonsUK-UCL
- negative regulation of canonical Wnt signaling pathway involved in cardiac muscle cell fate commitment Source: BHF-UCL
- negative regulation of cardiac muscle cell differentiation Source: BHF-UCL
- negative regulation of mesodermal cell fate specification Source: BHF-UCL
- negative regulation of ossification Source: UniProtKB
- negative regulation of pathway-restricted SMAD protein phosphorylation Source: BHF-UCL
- negative regulation of peptidyl-serine phosphorylation Source: BHF-UCL
- negative regulation of protein binding Source: ParkinsonsUK-UCL
- negative regulation of skeletal muscle tissue development Source: Ensembl
- negative regulation of transcription from RNA polymerase II promoter Source: BHF-UCL
- negative regulation of Wnt-Frizzled-LRP5/6 complex assembly Source: ParkinsonsUK-UCL
- negative regulation of Wnt signaling pathway Source: UniProtKB
- positive regulation of cell death Source: ARUK-UCL
- positive regulation of gene expression Source: ARUK-UCL
- positive regulation of heart induction by negative regulation of canonical Wnt signaling pathway Source: BHF-UCL
- positive regulation of JUN kinase activity Source: ARUK-UCL
- positive regulation of midbrain dopaminergic neuron differentiation Source: Ensembl
- positive regulation of neuron death Source: ARUK-UCL
- positive regulation of tau-protein kinase activity Source: ARUK-UCL
- positive regulation of Wnt signaling pathway, calcium modulating pathway Source: ARUK-UCL
- positive regulation of Wnt signaling pathway, planar cell polarity pathway Source: ARUK-UCL
- regulation of dopaminergic neuron differentiation Source: ParkinsonsUK-UCL
- regulation of endodermal cell fate specification Source: BHF-UCL
- regulation of receptor internalization Source: BHF-UCL
- regulation of synapse organization Source: Ensembl
- regulation of synaptic transmission, glutamatergic Source: Ensembl
- response to retinoic acid Source: Ensembl
- synapse disassembly Source: ParkinsonsUK-UCL
- Wnt signaling pathway involved in somitogenesis Source: Ensembl
Keywordsi
| Molecular function | Developmental protein |
| Biological process | Wnt signaling pathway |
Enzyme and pathway databases
| Reactomei | R-HSA-201681. TCF dependent signaling in response to WNT. R-HSA-3772470. Negative regulation of TCF-dependent signaling by WNT ligand antagonists. R-HSA-5339717. Misspliced LRP5 mutants have enhanced beta-catenin-dependent signaling. |
| SignaLinki | O94907. |
| SIGNORi | O94907. |
Names & Taxonomyi
| Protein namesi | Recommended name: Dickkopf-related protein 1Short name: Dickkopf-1 Short name: Dkk-1 Short name: hDkk-1 Alternative name(s): SK |
| Gene namesi | Name:DKK1 ORF Names:UNQ492/PRO1008 |
| Organismi | Homo sapiens (Human) |
| Taxonomic identifieri | 9606 [NCBI] |
| Taxonomic lineagei | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo |
| Proteomesi |
|
Organism-specific databases
| HGNCi | HGNC:2891. DKK1. |
Subcellular locationi
GO - Cellular componenti
- early endosome membrane Source: Reactome
- extracellular region Source: Reactome
- extracellular space Source: BHF-UCL
- plasma membrane Source: MGI
Keywords - Cellular componenti
SecretedPathology & Biotechi
Organism-specific databases
| DisGeNETi | 22943. |
| MalaCardsi | DKK1. |
| OpenTargetsi | ENSG00000107984. |
| Orphaneti | 85193. Idiopathic juvenile osteoporosis. |
| PharmGKBi | PA27345. |
Chemistry databases
| ChEMBLi | CHEMBL6024. |
Polymorphism and mutation databases
| BioMutai | DKK1. |
PTM / Processingi
Molecule processing
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| Signal peptidei | 1 – 31 | 1 PublicationAdd BLAST | 31 | |
| ChainiPRO_0000007218 | 32 – 266 | Dickkopf-related protein 1Add BLAST | 235 |
Amino acid modifications
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| Glycosylationi | 61 | O-linked (GalNAc...) serine1 Publication | 1 | |
| Disulfide bondi | 85 ↔ 97 | |||
| Disulfide bondi | 91 ↔ 111 | |||
| Disulfide bondi | 114 ↔ 128 | |||
| Disulfide bondi | 121 ↔ 133 | |||
| Disulfide bondi | 127 ↔ 138 | |||
| Disulfide bondi | 189 ↔ 201 | |||
| Disulfide bondi | 195 ↔ 210 | |||
| Disulfide bondi | 200 ↔ 237 | |||
| Disulfide bondi | 220 ↔ 245 | |||
| Disulfide bondi | 239 ↔ 263 | |||
| Glycosylationi | 256 | N-linked (GlcNAc...) asparagine1 Publication | 1 |
Keywords - PTMi
Disulfide bond, GlycoproteinProteomic databases
| EPDi | O94907. |
| MaxQBi | O94907. |
| PaxDbi | O94907. |
| PeptideAtlasi | O94907. |
| PRIDEi | O94907. |
PTM databases
| iPTMneti | O94907. |
| PhosphoSitePlusi | O94907. |
Miscellaneous databases
| PMAP-CutDBi | O94907. |
Expressioni
Tissue specificityi
Placenta.
Gene expression databases
| Bgeei | ENSG00000107984. |
| CleanExi | HS_DKK1. |
| ExpressionAtlasi | O94907. baseline and differential. |
| Genevisiblei | O94907. HS. |
Interactioni
Subunit structurei
Interacts with LRP6 (PubMed:11448771, PubMed:17804805, PubMed:20093360, PubMed:22000856). Interacts (via the C-termianl Cys-rich domain) with LRP5 (via beta-propeller regions 3 and 4); the interaction, enhanced by MESD and or KREMEN, antagonizes Wnt-mediated signaling (PubMed:19746449). Forms a ternary complex with LRP6 and KREM1 (PubMed:27524201). Interacts with KREM1 (PubMed:17804805).6 Publications
Binary interactionsi
GO - Molecular functioni
- co-receptor binding Source: ParkinsonsUK-UCL
- growth factor activity Source: ProtInc
- low-density lipoprotein particle receptor binding Source: MGI
- receptor antagonist activity Source: BHF-UCL
Protein-protein interaction databases
| BioGridi | 116599. 15 interactors. |
| DIPi | DIP-46461N. |
| IntActi | O94907. 5 interactors. |
| MINTi | MINT-1196808. |
| STRINGi | 9606.ENSP00000363081. |
Chemistry databases
| BindingDBi | O94907. |
Structurei
Secondary structure
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| Helixi | 192 – 194 | Combined sources | 3 | |
| Beta strandi | 199 – 204 | Combined sources | 6 | |
| Beta strandi | 207 – 212 | Combined sources | 6 | |
| Beta strandi | 218 – 220 | Combined sources | 3 | |
| Helixi | 226 – 231 | Combined sources | 6 | |
| Beta strandi | 243 – 247 | Combined sources | 5 | |
| Beta strandi | 261 – 265 | Combined sources | 5 |
3D structure databases
| Select the link destinations: PDBei RCSB PDBi PDBji Links Updated | PDB entry | Method | Resolution (Å) | Chain | Positions | PDBsum |
| 3S2K | X-ray | 2.80 | C | 178-266 | [»] | |
| 3S8V | X-ray | 3.10 | X | 183-266 | [»] | |
| 3SOQ | X-ray | 1.90 | Z | 38-44 | [»] | |
| 5FWW | X-ray | 3.50 | C | 182-266 | [»] | |
| 5GJE | electron microscopy | 21.00 | C | 182-266 | [»] | |
| ProteinModelPortali | O94907. | |||||
| SMRi | O94907. | |||||
| ModBasei | Search... | |||||
| MobiDBi | Search... | |||||
Family & Domainsi
Region
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| Regioni | 85 – 138 | DKK-type Cys-1Add BLAST | 54 | |
| Regioni | 189 – 263 | DKK-type Cys-2Add BLAST | 75 |
Domaini
The C-terminal cysteine-rich domain mediates interaction with LRP5 and LRP6.By similarity
Sequence similaritiesi
Belongs to the dickkopf family.Curated
Keywords - Domaini
SignalPhylogenomic databases
| eggNOGi | ENOG410IRWP. Eukaryota. ENOG4111FNB. LUCA. |
| GeneTreei | ENSGT00390000007000. |
| HOGENOMi | HOG000246998. |
| HOVERGENi | HBG000441. |
| InParanoidi | O94907. |
| KOi | K02165. |
| OMAi | YHTKGQE. |
| OrthoDBi | EOG091G0H13. |
| PhylomeDBi | O94907. |
| TreeFami | TF330916. |
Family and domain databases
| InterProi | View protein in InterPro IPR006796. Dickkopf_N. |
| Pfami | View protein in Pfam PF04706. Dickkopf_N. 1 hit. |
Sequencei
Sequence statusi: Complete.
Sequence processingi: The displayed sequence is further processed into a mature form.
O94907-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MMALGAAGAT RVFVAMVAAA LGGHPLLGVS ATLNSVLNSN AIKNLPPPLG
60 70 80 90 100
GAAGHPGSAV SAAPGILYPG GNKYQTIDNY QPYPCAEDEE CGTDEYCASP
110 120 130 140 150
TRGGDAGVQI CLACRKRRKR CMRHAMCCPG NYCKNGICVS SDQNHFRGEI
160 170 180 190 200
EETITESFGN DHSTLDGYSR RTTLSSKMYH TKGQEGSVCL RSSDCASGLC
210 220 230 240 250
CARHFWSKIC KPVLKEGQVC TKHRRKGSHG LEIFQRCYCG EGLSCRIQKD
260
HHQASNSSRL HTCQRH
Sequence databases
| Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AF127563 mRNA. Translation: AAD21087.1. AF177394 mRNA. Translation: AAF02674.1. AB020315 Genomic DNA. Translation: BAA34651.1. AF261158, AF261157 Genomic DNA. Translation: AAG15544.1. AY359005 mRNA. Translation: AAQ89364.1. AK314902 mRNA. Translation: BAG37416.1. CH471083 Genomic DNA. Translation: EAW54144.1. BC001539 mRNA. Translation: AAH01539.1. |
| CCDSi | CCDS7246.1. |
| RefSeqi | NP_036374.1. NM_012242.2. |
| UniGenei | Hs.40499. |
Genome annotation databases
| Ensembli | ENST00000373970; ENSP00000363081; ENSG00000107984. |
| GeneIDi | 22943. |
| KEGGi | hsa:22943. |
| UCSCi | uc001jjr.4. human. |
Similar proteinsi
Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:| 100% | UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry. |
| 90% | UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence). |
| 50% | UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster. |
Entry informationi
| Entry namei | DKK1_HUMAN | |
| Accessioni | O94907Primary (citable) accession number: O94907 Secondary accession number(s): B2RC19 | |
| Entry historyi | Integrated into UniProtKB/Swiss-Prot: | February 21, 2001 |
| Last sequence update: | May 1, 1999 | |
| Last modified: | July 5, 2017 | |
| This is version 157 of the entry and version 1 of the sequence. See complete history. | ||
| Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
| Annotation program | Chordata Protein Annotation Program | |
| Disclaimer | Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. | |
Miscellaneousi
Keywords - Technical termi
3D-structure, Complete proteome, Direct protein sequencing, Reference proteomeDocuments
- Human chromosome 10
Human chromosome 10: entries, gene names and cross-references to MIM - MIM cross-references
Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot - PDB cross-references
Index of Protein Data Bank (PDB) cross-references - SIMILARITY comments
Index of protein domains and families
