Homo sapiens Protein: DSPP
Summary
InnateDB Protein IDBP-29147.7
Last Modified 2014-10-13 [Report errors or provide feedback]
Gene Symbol DSPP
Protein Name dentin sialophosphoprotein
Synonyms DFNA39; DGI1; DMP3; DPP; DSP; DTDP2;
Species Homo sapiens
Ensembl Protein ENSP00000282478
InnateDB Gene IDBG-29145 (DSPP)
Protein Structure
UniProt Annotation
Function DSP may be an important factor in dentinogenesis. DPP may bind high amount of calcium and facilitate initial mineralization of dentin matrix collagen as well as regulate the size and shape of the crystals.
Subcellular Localization Secreted, extracellular space, extracellular matrix.
Disease Associations Deafness, autosomal dominant, 39, with dentinogenesis imperfecta 1 (DFNA39/DGI1) [MIM:605594]: A disorder characterized by the association of progressive sensorineural high-frequency hearing loss with dentinogenesis imperfecta. {ECO:0000269PubMed:11175790}. Note=The disease is caused by mutations affecting the gene represented in this entry.Dentinogenesis imperfecta, Shields type 2 (DGI2) [MIM:125490]: A form of dentinogenesis imperfecta, an autosomal dominant dentin disorder characterized by amber-brown, opalescent teeth that fracture and shed their enamel during mastication, thereby exposing the dentin to rapid wear. Radiographically, the crown appears bulbous and pulpal obliteration is common. The pulp chambers are initially larger than normal prior and immediately after tooth eruption, and then progressively close down to become almost obliterated by abnormal dentin formation. Roots are short and thin. Both primary and permanent teeth are affected. DGI2 is not associated with osteogenesis imperfecta. {ECO:0000269PubMed:11175779, ECO:0000269PubMed:14758537, ECO:0000269PubMed:17627120, ECO:0000269PubMed:21029264}. Note=The disease is caused by mutations affecting the gene represented in this entry. DSPP defects causing dentin abnormalities act in a dominant negative manner and include missense, splice-site, frameshift mutations. 5' frameshift mutations cause dentin dysplasia while frameshift mutations at the 3' end cause the more severe dentinogenesis imperfecta phenotype (PubMed:18521831 and PubMed:22392858).Dentinogenesis imperfecta, Shields type 3 (DGI3) [MIM:125500]: A form of dentinogenesis imperfecta, an autosomal dominant dentin disorder characterized by amber-brown, opalescent teeth that fracture and shed their enamel during mastication, thereby exposing the dentin to rapid wear. Radiographically, the crown appears bulbous and pulpal obliteration is common. The pulp chambers are initially larger than normal prior and immediately after tooth eruption, and then progressively close down to become almost obliterated by abnormal dentin formation. Roots are short and thin. Both primary and permanent teeth are affected. DGI3 teeth typically manifest multiple periapical radiolucencies. DGI3 is not associated with osteogenesis imperfecta. {ECO:0000269PubMed:15592686, ECO:0000269PubMed:18521831, ECO:0000269PubMed:23509818}. Note=The disease is caused by mutations affecting the gene represented in this entry. DSPP defects causing dentin abnormalities act in a dominant negative manner and include missense, splice-site, frameshift mutations. 5' frameshift mutations cause dentin dysplasia while frameshift mutations at the 3' end cause the more severe dentinogenesis imperfecta phenotype (PubMed:18521831 and PubMed:22392858).Dentin dysplasia 2 (DTDP2) [MIM:125420]: A dental defect in which the deciduous teeth are opalescent. The permanent teeth are of normal shape, form, and color in most cases. The root length is normal. On radiographs, the pulp chambers of permanent teeth are obliterated, have a thistle-tube deformity and contain pulp stones. {ECO:0000269PubMed:12354781, ECO:0000269PubMed:18521831}. Note=The disease is caused by mutations affecting the gene represented in this entry. DSPP defects causing dentin abnormalities act in a dominant negative manner and include missense, splice-site, frameshift mutations. 5' frameshift mutations cause dentin dysplasia while frameshift mutations at the 3' end cause the more severe dentinogenesis imperfecta phenotype (PubMed:18521831, PubMed:22392858). {ECO:0000269PubMed:18521831, ECO:0000269PubMed:22392858}.
Tissue Specificity Expressed in teeth. DPP is synthesized by odontoblast and transiently expressed by pre-ameloblasts.
Comments
Interactions
Number of Interactions This gene and/or its encoded proteins are associated with 3 experimentally validated interaction(s) in this database.
Experimentally validated
Total 3 [view]
Protein-Protein 1 [view]
Protein-DNA 2 [view]
Protein-RNA 0
DNA-DNA 0
RNA-RNA 0
DNA-RNA 0
Gene Ontology

Molecular Function
Accession GO Term
GO:0005201 extracellular matrix structural constituent
GO:0005509 calcium ion binding
GO:0005518 collagen binding
Biological Process
GO:0001501 skeletal system development
GO:0001503 ossification
GO:0007275 multicellular organismal development
GO:0030198 extracellular matrix organization
GO:0031214 biomineral tissue development
Cellular Component
GO:0005576 extracellular region
GO:0005578 proteinaceous extracellular matrix
Protein Structure and Domains
PDB ID
InterPro
PFAM
PRINTS
PIRSF
SMART
TIGRFAMs
Post-translational Modifications
Modification
Cross-References
SwissProt Q9NZW4
PhosphoSite PhosphoSite-Q9NZW4
TrEMBL B7SEZ4
UniProt Splice Variant
Entrez Gene 1834
UniGene Hs.678914
RefSeq
HUGO HGNC:3054
OMIM 125485
CCDS CCDS43248
HPRD 00508
IMGT
EMBL AC093895 AF094508 AF163151 EU278638 EU278648 EU278653
GenPept AAD16120 AAF42472 ABX82466 ABX82476 ABX82481