Norrin

Last updated
NDP
Available structures
PDB Ortholog search: PDBe RCSB
Identifiers
Aliases NDP , EVR2, FEVR, ND, Norrie disease (pseudoglioma), norrin cystine knot growth factor, norrin cystine knot growth factor NDP
External IDs OMIM: 300658 MGI: 102570 HomoloGene: 225 GeneCards: NDP
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_000266

NM_010883

RefSeq (protein)

NP_000257

NP_035013

Location (UCSC) Chr X: 43.95 – 43.97 Mb Chr X: 16.75 – 16.78 Mb
PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse

Norrin, also known as Norrie disease protein or X-linked exudative vitreoretinopathy 2 protein (EVR2) is a protein that in humans is encoded by the NDP gene. [5] Mutations in the NDP gene are associated with the Norrie disease.

Contents

Function

Signaling induced by the protein Norrin regulates vascular development of vertebrate retina and controls important blood vessels in the ear. [5] Norrin binds with high affinity to Frizzled 4, and Frizzled 4 knockout mice exhibit abnormal vascular development of the retina.

Clinical significance

NDP is the genetic locus identified as harboring mutations that result in Norrie disease. Norrie disease is a rare genetic disorder characterized by bilateral congenital blindness that is caused by a vascularized mass behind each lens due to a maldeveloped retina (pseudoglioma). [5]

Related Research Articles

Norrie disease is a rare disease and genetic disorder that primarily affects the eyes and almost always leads to blindness. It is caused by mutations in the Norrin cystine knot growth factor (NDP) gene, which is located on the X chromosome. In addition to the congenital ocular symptoms, the majority of patients experience a progressive hearing loss starting mostly in their 2nd decade of life, and some may have learning difficulties among other additional characteristics.

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References

  1. 1 2 3 GRCh38: Ensembl release 89: ENSG00000124479 - Ensembl, May 2017
  2. 1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000040138 - Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. 1 2 3 "Entrez Gene: NDP Norrie disease (pseudoglioma)".

Further reading