αI-スペクトリン
αI-スペクトリン(αI-spectrin)、スペクトリンα1(spectrin α1)またはSPTA1(spectrin alpha, erythrocytic 1)は、ヒトではSPTA1遺伝子にコードされるタンパク質である[5]。
スペクトリンはアクチンを架橋する足場タンパク質であり、アクチン細胞骨格を細胞膜へ連結している。また、細胞の形状の決定、膜貫通タンパク質の配置やオルガネラの構成といった機能も果たしている。スペクトリンはα-スペクトリンとβ-スペクトリンからなる二量体同士が向かい合うように連結され、四量体を形成する。αI-スペクトリンは主に22個のスペクトリンリピートから構成され、これらはβ-スペクトリンとの二量体形成に関与している。αI-スペクトリンは赤血球の細胞膜上の構成要素を形成する。SPTA1遺伝子の変異は遺伝性楕円赤血球症2型、遺伝性熱変形赤血球症、遺伝性球状赤血球症3型など、赤血球と関係したさまざまな遺伝疾患の原因となる[5]。
相互作用
編集出典
編集- ^ a b c GRCh38: Ensembl release 89: ENSG00000163554 - Ensembl, May 2017
- ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000026532 - Ensembl, May 2017
- ^ Human PubMed Reference:
- ^ Mouse PubMed Reference:
- ^ a b “Entrez Gene: SPTA1 spectrin, alpha, erythrocytic 1 (elliptocytosis 2)”. 2024年5月7日閲覧。
- ^ Ziemnicka-Kotula, D; Xu J; Gu H; Potempska A; Kim K S; Jenkins E C; Trenkner E; Kotula L (May 1998). “Identification of a candidate human spectrin Src homology 3 domain-binding protein suggests a general mechanism of association of tyrosine kinases with the spectrin-based membrane skeleton”. J. Biol. Chem. (UNITED STATES) 273 (22): 13681–92. doi:10.1074/jbc.273.22.13681. ISSN 0021-9258. PMID 9593709.
関連文献
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- “Hereditary spherocytosis: from clinical to molecular defects.”. Haematologica 83 (3): 240–57. (1998). PMID 9573679.
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- Delaunay J (2003). “Molecular basis of red cell membrane disorders.”. Acta Haematol. 108 (4): 210–8. doi:10.1159/000065657. PMID 12432217.
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- “A common type of the spectrin alpha I 46-50a-kD peptide abnormality in hereditary elliptocytosis and pyropoikilocytosis is associated with a mutation distant from the proteolytic cleavage site. Evidence for the functional importance of the triple helical model of spectrin.”. J. Clin. Invest. 89 (3): 892–8. (1992). doi:10.1172/JCI115669. PMC 442935. PMID 1541680 .
- “Properties of human red cell spectrin heterodimer (side-to-side) assembly and identification of an essential nucleation site.”. J. Biol. Chem. 267 (21): 14775–82. (1992). doi:10.1016/S0021-9258(18)42107-2. PMID 1634521.
- “Spectrin Jendouba: an alpha II/31 spectrin variant that is associated with elliptocytosis and carries a mutation distant from the dimer self-association site.”. Blood 80 (3): 809–15. (1992). doi:10.1182/blood.V80.3.809.bloodjournal803809. PMID 1638030.
- “The exon-intron organization of the human erythrocyte alpha-spectrin gene.”. Genomics 9 (1): 131–40. (1991). doi:10.1016/0888-7543(91)90230-C. PMID 1672285.
- “Four different mutations in codon 28 of alpha spectrin are associated with structurally and functionally abnormal spectrin alpha I/74 in hereditary elliptocytosis.”. J. Clin. Invest. 88 (3): 743–9. (1991). doi:10.1172/JCI115371. PMC 295451. PMID 1679439 .
- “The complete cDNA and polypeptide sequences of human erythroid alpha-spectrin.”. J. Biol. Chem. 265 (8): 4434–43. (1990). doi:10.1016/S0021-9258(19)39583-3. PMID 1689726.
- “A defect in alpha-spectrin mRNA accumulation in hereditary pyropoikilocytosis.”. Trans. Assoc. Am. Physicians 104: 32–9. (1993). PMID 1845156.
- “Heterogeneity of the molecular basis of hereditary pyropoikilocytosis and hereditary elliptocytosis associated with increased levels of the spectrin alpha I/74-kilodalton tryptic peptide.”. Blood 78 (5): 1364–72. (1991). doi:10.1182/blood.V78.5.1364.1364. PMID 1878597.
- “Non-viral cellular substrates for human immunodeficiency virus type 1 protease.”. FEBS Lett. 278 (2): 199–203. (1991). doi:10.1016/0014-5793(91)80116-K. PMID 1991513.
- “Spectrin Rouen (beta 220-218), a novel shortened beta-chain variant in a kindred with hereditary elliptocytosis. Characterization of the molecular defect as exon skipping due to a splice site mutation.”. J. Clin. Invest. 88 (1): 76–81. (1991). doi:10.1172/JCI115307. PMC 296005. PMID 2056132 .
- “An insertional frameshift mutation of the beta-spectrin gene associated with elliptocytosis in spectrin nice (beta 220/216).”. Blood 78 (2): 517–23. (1991). doi:10.1182/blood.V78.2.517.517. PMID 2070088.