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Protein 4.1
from Wikipedia

EPB41
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesEPB41, erythrocyte membrane protein band 4.1, 4.1R, EL1, HE
External IDsOMIM: 130500; MGI: 95401; HomoloGene: 44324; GeneCards: EPB41; OMA:EPB41 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_001128606
NM_001128607
NM_183428

RefSeq (protein)

NP_001122078
NP_001122079
NP_906273

Location (UCSC)Chr 1: 28.89 – 29.12 MbChr 4: 131.92 – 132.08 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Protein 4.1, (Erythrocyte membrane protein band 4.1), is a protein associated with the cytoskeleton that in humans is encoded by the EPB41 gene. Protein 4.1 is a major structural element of the erythrocyte membrane skeleton. It plays a key role in regulating membrane physical properties of mechanical stability and deformability by stabilizing spectrin-actin interaction. Protein 4.1 (80 kD) interacts with spectrin and short actin filaments to form the erythrocyte membrane skeleton. Mutations of spectrin and protein 4.1 are associated with elliptocytosis or spherocytosis and anemia of varying severity.

Clinical significance

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A schematic diagram representing the relationships between cytoskeletal molecules as relevant to hereditary elliptocytosis.

Elliptocytosis is a hematologic disorder characterized by elliptically shaped erythrocytes and a variable degree of hemolytic anemia. Inherited as an autosomal dominant, elliptocytosis results from mutation in any one of several genes encoding proteins of the red cell membrane skeleton. The form discussed here is the one found in the 1950s to be linked to Rh blood group and more recently shown to be caused by a defect in protein 4.1. 'Rh-unlinked' forms of elliptocytosis are caused by mutation in the alpha-spectrin gene (MIM 182860), the beta-spectrin gene (MIM 182870), or the band 3 gene (MIM 109270) [supplied by OMIM].[5]

Interactions

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Protein 4.1 has been shown to interact with:

See also

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References

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Further reading

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