Abstract
The cytoskeletal components, macrophage actin-binding protein and filamin, were dried from glycerol and examined by low-angle rotary shadowing electron microscopy. Both are elongate, flexible molecules whose general morphologi is similar to that of erythrocyte spectrin. Neither actin-binding protein nor filamin binds to spectrin-depleted erythrocyte membranes.
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Selected References
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- Anderson J. M., Tyler J. M. Proteolytic fragmentation of spectrin:effect of removal of terminal phosphopeptides on spectrin binding to human erythrocyte membranes. Prog Clin Biol Res. 1979;30:531–534. [PubMed] [Google Scholar]
- Anderson J. M., Tyler J. M. State of spectrin phosphorylation does not affect erythrocyte shape or spectrin binding to erythrocyte membranes. J Biol Chem. 1980 Feb 25;255(4):1259–1265. [PubMed] [Google Scholar]
- Bennett V., Branton D. Selective association of spectrin with the cytoplasmic surface of human erythrocyte plasma membranes. Quantitative determination with purified (32P)spectrin. J Biol Chem. 1977 Apr 25;252(8):2753–2763. [PubMed] [Google Scholar]
- Bolton A. E., Hunter W. M. The labelling of proteins to high specific radioactivities by conjugation to a 125I-containing acylating agent. Biochem J. 1973 Jul;133(3):529–539. doi: 10.1042/bj1330529. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Brenner S. L., Korn E. D. Spectrin-actin interaction. Phosphorylated and dephosphorylated spectrin tetramer cross-link F-actin. J Biol Chem. 1979 Sep 10;254(17):8620–8627. [PubMed] [Google Scholar]
- Brotschi E. A., Hartwig J. H., Stossel T. P. The gelation of actin by actin-binding protein. J Biol Chem. 1978 Dec 25;253(24):8988–8993. [PubMed] [Google Scholar]
- Davies P. J., Wallach D., Willingham M. C., Pastan I., Yamaguchi M., Robson R. M. Filamin-actin interaction. Dissociation of binding from gelation by Ca2+-activated proteolysis. J Biol Chem. 1978 Jun 10;253(11):4036–4042. [PubMed] [Google Scholar]
- Fairbanks G., Steck T. L., Wallach D. F. Electrophoretic analysis of the major polypeptides of the human erythrocyte membrane. Biochemistry. 1971 Jun 22;10(13):2606–2617. doi: 10.1021/bi00789a030. [DOI] [PubMed] [Google Scholar]
- Korn E. D. Biochemistry of actomyosin-dependent cell motility (a review). Proc Natl Acad Sci U S A. 1978 Feb;75(2):588–599. doi: 10.1073/pnas.75.2.588. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Marchesi V. T., Steers E., Jr Selective solubilization of a protein component of the red cell membrane. Science. 1968 Jan 12;159(3811):203–204. doi: 10.1126/science.159.3811.203. [DOI] [PubMed] [Google Scholar]
- Ralston G., Dunbar J., White M. The temperature-dependent dissociation of spectrin. Biochim Biophys Acta. 1977 Mar 28;491(1):345–348. doi: 10.1016/0005-2795(77)90072-1. [DOI] [PubMed] [Google Scholar]
- Shotton D. M., Burke B. E., Branton D. The molecular structure of human erythrocyte spectrin. Biophysical and electron microscopic studies. J Mol Biol. 1979 Jun 25;131(2):303–329. doi: 10.1016/0022-2836(79)90078-0. [DOI] [PubMed] [Google Scholar]
- Stossel T. P., Hartwig J. H. Interactions between actin, myosin, and an actin-binding protein from rabbit alveolar macrophages. Alveolar macrophage myosin Mg-2+-adenosine triphosphatase requires a cofactor for activation by actin. J Biol Chem. 1975 Jul 25;250(14):5706–5712. [PubMed] [Google Scholar]
- Stossel T. P., Hartwig J. H. Interactions of actin, myosin, and a new actin-binding protein of rabbit pulmonary macrophages. II. Role in cytoplasmic movement and phagocytosis. J Cell Biol. 1976 Mar;68(3):602–619. doi: 10.1083/jcb.68.3.602. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Thoma F., Koller T., Klug A. Involvement of histone H1 in the organization of the nucleosome and of the salt-dependent superstructures of chromatin. J Cell Biol. 1979 Nov;83(2 Pt 1):403–427. doi: 10.1083/jcb.83.2.403. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tyler J. M., Hargreaves W. R., Branton D. Purification of two spectrin-binding proteins: biochemical and electron microscopic evidence for site-specific reassociation between spectrin and bands 2.1 and 4.1. Proc Natl Acad Sci U S A. 1979 Oct;76(10):5192–5196. doi: 10.1073/pnas.76.10.5192. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Ungewickell E., Gratzer W. Self-association of human spectrin. A thermodynamic and kinetic study. Eur J Biochem. 1978 Aug 1;88(2):379–385. doi: 10.1111/j.1432-1033.1978.tb12459.x. [DOI] [PubMed] [Google Scholar]
- Wang K. Filamin, a new high-molecular-weight protein found in smooth muscle and nonmuscle cells. Purification and properties of chicken gizzard filamin. Biochemistry. 1977 May 3;16(9):1857–1865. doi: 10.1021/bi00628a015. [DOI] [PubMed] [Google Scholar]
- Wang K., Singer S. J. Interaction of filamin with f-actin in solution. Proc Natl Acad Sci U S A. 1977 May;74(5):2021–2025. doi: 10.1073/pnas.74.5.2021. [DOI] [PMC free article] [PubMed] [Google Scholar]