The protein encoded by this gene, Ankyrin 1, is the prototype of the ankyrin family, was first discovered in erythrocytes, but since has also been found in brain and muscles.[6]
Genetics[]
Complex patterns of alternative splicing in the regulatory domain, giving rise to different isoforms of ankyrin 1 have been described, however, the precise functions of the various isoforms are not known. Alternative polyadenylation accounting for the different sized erythrocytic ankyrin 1 mRNAs, has also been reported. Truncated muscle-specific isoforms of ankyrin 1 resulting from usage of an alternate promoter have also been identified.[6]
Disease linkage[]
Mutations in erythrocytic ankyrin 1 have been associated in approximately half of all patients with hereditary spherocytosis.[6]
ANK1 shows altered methylation and expression in Alzheimer's disease.[7][8] A gene expression study of postmortem brains has suggested ANK1 interacts with interferon-γ signalling.[9]
Function[]
The ANK1 protein belongs to the ankyrin family that are believed to link the integral membrane proteins to the underlying spectrin-actincytoskeleton and play key roles in activities such as cell motility, activation, proliferation, contact, and maintenance of specialized membrane domains. Multiple isoforms of ankyrin with different affinities for various target proteins are expressed in a tissue-specific, developmentally regulated manner. Most ankyrins are typically composed of three structural domains: an amino-terminal domain containing multiple ankyrin repeats; a central region with a highly conserved spectrin-binding domain; and a carboxy-terminal regulatory domain, which is the least conserved and subject to variation.[6]
The small ANK1 (sAnk1) protein splice variants makes contacts with obscurin, a giant protein surrounding the contractile apparatus in striated muscle.[10]
^De Jager, P. L.; Srivastava, G; Lunnon, K; Burgess, J; Schalkwyk, L. C.; Yu, L; Eaton, M. L.; Keenan, B. T.; Ernst, J; McCabe, C; Tang, A; Raj, T; Replogle, J; Brodeur, W; Gabriel, S; Chai, H. S.; Younkin, C; Younkin, S. G.; Zou, F; Szyf, M; Epstein, C. B.; Schneider, J. A.; Bernstein, B. E.; Meissner, A; Ertekin-Taner, N; Chibnik, L. B.; Kellis, M; Mill, J; Bennett, D. A. (2014). "Alzheimer's disease: Early alterations in brain DNA methylation at ANK1, BIN1, RHBDF2 and other loci". Nature Neuroscience. 17 (9): 1156–63. doi:10.1038/nn.3786. PMC4292795. PMID25129075.
Bennett V, Baines AJ (2001). "Spectrin and ankyrin-based pathways: metazoan inventions for integrating cells into tissues". Physiol. Rev. 81 (3): 1353–92. doi:10.1152/physrev.2001.81.3.1353. PMID11427698.
Bennett V (1979). "Immunoreactive forms of human erythrocyte ankyrin are present in diverse cells and tissues". Nature. 281 (5732): 597–9. Bibcode:1979Natur.281..597B. doi:10.1038/281597a0. PMID492324. S2CID263106.
Lux SE, John KM, Bennett V (1990). "Analysis of cDNA for human erythrocyte ankyrin indicates a repeated structure with homology to tissue-differentiation and cell-cycle control proteins". Nature. 344 (6261): 36–42. Bibcode:1990Natur.344...36L. doi:10.1038/344036a0. PMID2137557. S2CID4351060.
Cianci CD, Giorgi M, Morrow JS (1988). "Phosphorylation of ankyrin down-regulates its cooperative interaction with spectrin and protein 3". J. Cell. Biochem. 37 (3): 301–15. doi:10.1002/jcb.240370305. PMID2970468. S2CID42349239.
Bourguignon LY, Lokeshwar VB, Chen X, Kerrick WG (1994). "Hyaluronic acid-induced lymphocyte signal transduction and HA receptor (GP85/CD44)-cytoskeleton interaction". J. Immunol. 151 (12): 6634–44. PMID7505012.
Maruyama K, Sugano S (1994). "Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides". Gene. 138 (1–2): 171–4. doi:10.1016/0378-1119(94)90802-8. PMID8125298.
Morgans CW, Kopito RR (1993). "Association of the brain anion exchanger, AE3, with the repeat domain of ankyrin". J. Cell Sci. 105. ( Pt 4) (4): 1137–42. doi:10.1242/jcs.105.4.1137. PMID8227202.
Eber SW, Gonzalez JM, Lux ML, et al. (1996). "Ankyrin-1 mutations are a major cause of dominant and recessive hereditary spherocytosis". Nat. Genet. 13 (2): 214–8. doi:10.1038/ng0696-214. PMID8640229. S2CID10946374.
del Giudice EM, Hayette S, Bozon M, et al. (1996). "Ankyrin Napoli: a de novo deletional frameshift mutation in exon 16 ankyrin gene (ANK1) associated with spherocytosis". Br. J. Haematol. 93 (4): 828–34. doi:10.1046/j.1365-2141.1996.d01-1746.x. PMID8703812. S2CID28906962.
Suzuki Y, Yoshitomo-Nakagawa K, Maruyama K, et al. (1997). "Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library". Gene. 200 (1–2): 149–56. doi:10.1016/S0378-1119(97)00411-3. PMID9373149.
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PDB gallery
1n11: D34 REGION OF HUMAN ANKYRIN-R AND LINKER
External links[]
ANK1+protein,+human at the US National Library of Medicine Medical Subject Headings (MeSH)
Human ANK1 genome location and ANK1 gene details page in the UCSC Genome Browser.
This article incorporates text from the United States National Library of Medicine, which is in the public domain.