AMBN ameloblastin [Homo sapiens (human)] - Gene

Summary

Official Symbol: AMBNprovided by HGNC
Official Full Name: ameloblastinprovided by HGNC
Primary source: HGNC:HGNC:452
See related: Ensembl:ENSG00000178522 MIM:601259
Gene type: protein coding
RefSeq status: REVIEWED
Organism: Homo sapiens
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as: AI1F
Summary: This gene encodes the nonamelogenin enamel matrix protein ameloblastin. The encoded protein may be important in enamel matrix formation and mineralization. This gene is located in the calcium-binding phosphoprotein gene cluster on chromosome 4. Mutations in this gene may be associated with dentinogenesis imperfect and autosomal dominant amylogenesis imperfect. [provided by RefSeq, Aug 2011]
Expression: Low expression observed in reference dataset See more
Orthologs: mouse all

Genomic context

Location:: 4q13.3

Exon count:: 13

Annotation release	Status	Assembly	Chr	Location
109.20200522	current	GRCh38.p13 (GCF_000001405.39)	4	NC_000004.12 (70592256..70607288)
105	previous assembly	GRCh37.p13 (GCF_000001405.25)	4	NC_000004.11 (71457975..71473005)

Chromosome 4 - NC_000004.12 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Go to reference sequence details

Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Expression

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See details

Project title: HPA RNA-seq normal tissues
Description: RNA-seq was performed of tissue samples from 95 human individuals representing 27 different tissues in order to determine tissue-specificity of all protein-coding genes
BioProject: PRJEB4337
Publication: PMID 24309898
Analysis date: Wed Apr 4 07:08:55 2018

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Ameloblastin is critical for the initiation of enamel ribbon formation, and its absence results in pathological mineralization within the enamel organ epithelia.
Title: AMBN mutations causing hypoplastic amelogenesis imperfecta and Ambn knockout-NLS-lacZ knockin mice exhibiting failed amelogenesis and Ambn tissue-specificity.
Single nucleotide polymorphisms in the AMELX and AMBN genes may be genetic variants that contribute to developmental defects of enamel in primary dentition of Polish children.
Title: Significance of genetic variations in developmental enamel defects of primary dentition in Polish children.
the calcium level was associated with genetic variations in AMELX, AMNB and ESRRB. AMELX and AMNB are involved in enamel mineralization. Mutations in both these genes are responsible for the amelogenesis imperfecta phenotype (OMIN), which supports their link with enamel alterations as well as enamel mineralization.
Title: Genes Involved in the Enamel Development Are Associated with Calcium and Phosphorus Level in Saliva.
these results indicate that AMBN enhances IL-1beta production in LPS-treated U937 cells through ERK1/2 phosphorylation and caspase-1 activation, suggesting that AMBN upregulates the inflammatory response in human macrophages and plays an important role in innate immunity.
Title: Ameloblastin Upregulates Inflammatory Response Through Induction of IL-1β in Human Macrophages.
Association between caries experience (caries-free versus caries affected) depending on asthma status and SNPs was tested. Logistic regression showed an association between AMBN rs4694075 and caries experience. Ameloblastin is associated w/caries in asthmatic children.
Title: Genetic variation in Ameloblastin is associated with caries in asthmatic children.
Protein interaction between Ambn and Psma3 can facilitate redistribution of ameloblastin domains within forming enamel.
Title: Protein Interaction between Ameloblastin and Proteasome Subunit α Type 3 Can Facilitate Redistribution of Ameloblastin Domains within Forming Enamel.
Authors perform an evolutionary analysis of mammalian AMBN sequences in order to predict functionally important sites of the protein and to identify candidate disease-associated mutations responsible for the protein function and identify AMBN as a candidate for amelogenesis imperfect in humans.
Title: Evolutionary analysis of selective constraints identifies ameloblastin (AMBN) as a potential candidate for amelogenesis imperfecta.
Report shows for the first time that AMBN mutations cause non-syndromic human amelogenesis imperfecta and confirms that mouse models with disrupted Ambn function are valid.
Title: Deletion of ameloblastin exon 6 is associated with amelogenesis imperfecta.
two genetic variants (rs2337359 upstream of TUFT1 and missense rs7439186 in AMBN) involved in gene-by-fluoride interactions.
Title: Effects of enamel matrix genes on dental caries are moderated by fluoride exposures.
We found a trend for association between variation in AMBN and MIH in both cohorts, which may suggest that variation in the regulation of AMBN is a mechanism that leads to MIH.
Title: Genes expressed in dental enamel development are associated with molar-incisor hypomineralization.

Submit: New GeneRIF Correction See all GeneRIFs (20)

Phenotypes

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Find tests for this gene in the NIH Genetic Testing Registry (GTR)

Review eQTL and phenotype association data in this region using PheGenI

Associated conditions

Description	Tests
Amelogenesis imperfecta, type IF MedGen: C4225394 OMIM: 616270 GeneReviews: Not available	Compare labs

Variation

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See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Markers

AMBN_8200 (e-PCR)
- UniSTS:471344

NoName (e-PCR)
- UniSTS:482108

NoName (e-PCR)
- UniSTS:481279

Homology

Homologs of the AMBN gene: The AMBN gene is conserved in chimpanzee, Rhesus monkey, dog, cow, mouse, rat, and frog.
Orthologs from Annotation Pipeline: 163 organisms have orthologs with human gene AMBN
Orthologs

Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
growth factor activity	IBA Inferred from Biological aspect of Ancestor more info	PubMed
growth factor activity	ISS Inferred from Sequence or Structural Similarity more info
protein binding	IPI Inferred from Physical Interaction more info	PubMed
structural constituent of tooth enamel	IEA Inferred from Electronic Annotation more info

Process	Evidence Code	Pubs
biomineral tissue development	IEA Inferred from Electronic Annotation more info
cell adhesion	IBA Inferred from Biological aspect of Ancestor more info	PubMed
cell adhesion	ISS Inferred from Sequence or Structural Similarity more info
cellular protein metabolic process	TAS Traceable Author Statement more info
odontogenesis of dentin-containing tooth	IEA Inferred from Electronic Annotation more info
post-translational protein modification	TAS Traceable Author Statement more info
regulation of cell proliferation	ISS Inferred from Sequence or Structural Similarity more info
signal transduction	IEA Inferred from Electronic Annotation more info

Component	Evidence Code	Pubs
endoplasmic reticulum lumen	TAS Traceable Author Statement more info
extracellular region	IEA Inferred from Electronic Annotation more info

General protein information

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Preferred Names: ameloblastin

Names: enamel matrix protein

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.