Insertion of a myc-tag within α-dystroglycan domains improves its biochemical and microscopic detection

Morlacchi S, Sciandra F, Bigotti MG, Bozzi M, Hübner W, Galtieri A, Giardina B, Brancaccio A (2012)
BMC biochemistry 13(1): 14.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
BACKGROUND: Epitope tags and fluorescent fusion proteins have become indispensable molecular tools for studies in the fields of biochemistry and cell biology. The knowledge collected on the subdomain organization of the two subunits of the adhesion complex dystroglycan (DG) enabled us to insert the 10 amino acids myc-tag at different locations along the α-subunit, in order to better visualize and investigate the DG complex in eukaryotic cells. RESULTS: We have generated two forms of DG polypeptides via the insertion of the myc-tag 1) within a flexible loop (between a.a. 170 and 171) that separates two autonomous subdomains, and 2) within the C-terminal domain in position 500. Their analysis showed that double-tagging (the β-subunit is linked to GFP) does not significantly interfere with the correct processing of the DG precursor (pre-DG) and confirmed that the α-DG N-terminal domain is processed in the cell before α-DG reaches its plasma membrane localization. In addition, myc insertion in position 500, right before the second Ig-like domain of α-DG, proved to be an efficient tool for the detection and pulling-down of glycosylated α-DG molecules targeted at the membrane. CONCLUSIONS: Further characterization of these and other myc-permissive site(s) will represent a valid support for the study of the maturation process of pre-DG and could result in the creation of a new class of intrinsic doubly-fluorescent DG molecules that would allow the monitoring of the two DG subunits, or of pre-DG, in cells without the need of antibodies.
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BMC biochemistry
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13
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14
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Morlacchi S, Sciandra F, Bigotti MG, et al. Insertion of a myc-tag within α-dystroglycan domains improves its biochemical and microscopic detection. BMC biochemistry. 2012;13(1):14.
Morlacchi, S., Sciandra, F., Bigotti, M. G., Bozzi, M., Hübner, W., Galtieri, A., Giardina, B., et al. (2012). Insertion of a myc-tag within α-dystroglycan domains improves its biochemical and microscopic detection. BMC biochemistry, 13(1), 14. doi:10.1186/1471-2091-13-14
Morlacchi, S., Sciandra, F., Bigotti, M. G., Bozzi, M., Hübner, W., Galtieri, A., Giardina, B., and Brancaccio, A. (2012). Insertion of a myc-tag within α-dystroglycan domains improves its biochemical and microscopic detection. BMC biochemistry 13, 14.
Morlacchi, S., et al., 2012. Insertion of a myc-tag within α-dystroglycan domains improves its biochemical and microscopic detection. BMC biochemistry, 13(1), p 14.
S. Morlacchi, et al., “Insertion of a myc-tag within α-dystroglycan domains improves its biochemical and microscopic detection”, BMC biochemistry, vol. 13, 2012, pp. 14.
Morlacchi, S., Sciandra, F., Bigotti, M.G., Bozzi, M., Hübner, W., Galtieri, A., Giardina, B., Brancaccio, A.: Insertion of a myc-tag within α-dystroglycan domains improves its biochemical and microscopic detection. BMC biochemistry. 13, 14 (2012).
Morlacchi, Simona, Sciandra, Francesca, Bigotti, Maria Giulia, Bozzi, Manuela, Hübner, Wolfgang, Galtieri, Antonio, Giardina, Bruno, and Brancaccio, Andrea. “Insertion of a myc-tag within α-dystroglycan domains improves its biochemical and microscopic detection”. BMC biochemistry 13.1 (2012): 14.

7 Zitationen in Europe PMC

Daten bereitgestellt von Europe PubMed Central.

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