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IBSP
HPA
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  • IBSP
PROTEIN SUMMARY GENE INFORMATION RNA DATA ANTIBODY DATA
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

IBSP
Synonyms BSP, BSP-II, SP-II
Gene descriptioni

Full gene name according to HGNC.

Integrin binding sialoprotein
Protein classi

Assigned HPA protein class(es) for the encoded protein(s).

Cancer-related genes
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Secreted
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 4
Cytoband q22.1
Chromosome location (bp) 87799554 - 87812435
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

1
Ensembl ENSG00000029559 (version 109)
Entrez gene 3381
HGNC HGNC:5341
UniProt P21815 (UniProt - Evidence at protein level)
neXtProt NX_P21815
GeneCards IBSP
Antibodypedia IBSP antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

Binds tightly to hydroxyapatite 1. Appears to form an integral part of the mineralized matrix 2. Probably important to cell-matrix interaction 3. Promotes adhesion and migration of various cells via the alpha-V/beta-3 integrin receptor (ITGAV:ITGB3) 4, 5, 6.... show less
Biological process (UniProt)i

Keywords assigned by UniProt to proteins because they are involved in a particular biological process.

Biomineralization, Cell adhesion
Ligand (UniProt)i

Keywords assigned by UniProt to proteins because they bind, are associated with, or whose activity is dependent of some molecule.

Sialic acid
Gene summary (Entrez)i

Useful information about the gene from Entrez

The protein encoded by this gene is a major structural protein of the bone matrix. It constitutes approximately 12% of the noncollagenous proteins in human bone and is synthesized by skeletal-associated cell types, including hypertrophic chondrocytes, osteoblasts, osteocytes, and osteoclasts. The only extraskeletal site of its synthesis is the trophoblast. This protein binds to calcium and hydroxyapatite via its acidic amino acid clusters, and mediates cell attachment through an RGD sequence that recognizes the vitronectin receptor. [provided by RefSeq, Jul 2008]... show less
PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Splice variant SwissProt TrEMBL Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
IBSP-201
ENSP00000226284
ENST00000226284
P21815
[Direct mapping] Bone sialoprotein 2
Show all
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
   DeepTMHMM predicted secreted proteins
   DeepSig predicted secreted proteins
Cancer-related genes
   Candidate cancer biomarkers
Mapped to neXtProt
   neXtProt - Evidence at protein level
Show all
GO:0001503 [ossification]
GO:0001649 [osteoblast differentiation]
GO:0003674 [molecular_function]
GO:0005178 [integrin binding]
GO:0005515 [protein binding]
GO:0005576 [extracellular region]
GO:0005615 [extracellular space]
GO:0007155 [cell adhesion]
GO:0016020 [membrane]
GO:0030198 [extracellular matrix organization]
GO:0030282 [bone mineralization]
GO:0031214 [biomineral tissue development]
GO:0031982 [vesicle]
GO:0036094 [small molecule binding]
GO:0045785 [positive regulation of cell adhesion]
GO:0071363 [cellular response to growth factor stimulus]
Show all
317 aa
35.1 kDa
Yes 0

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