Adzhubei, Alexei A.; Sternberg, Michael J.E.; Makarov, Alexander A. (2013). "Polyproline-II Helix in Proteins: Structure and Function". Journal of Molecular Biology. 425 (12): 2100–2132. doi:10.1016/j.jmb.2013.03.018. ISSN0022-2836. PMID23507311.
Adzhubei, Alexei A.; Sternberg, Michael J.E. (1993). "Left-handed Polyproline II Helices Commonly Occur in Globular Proteins". Journal of Molecular Biology. 229 (2): 472–493. doi:10.1006/jmbi.1993.1047. ISSN0022-2836. PMID8429558.
Adzhubei, Alexei A.; Sternberg, Michael J.E.; Makarov, Alexander A. (2013). "Polyproline-II Helix in Proteins: Structure and Function". Journal of Molecular Biology. 425 (12): 2100–2132. doi:10.1016/j.jmb.2013.03.018. ISSN0022-2836. PMID23507311.
Adzhubei, Alexei A.; Sternberg, Michael J.E. (1993). "Left-handed Polyproline II Helices Commonly Occur in Globular Proteins". Journal of Molecular Biology. 229 (2): 472–493. doi:10.1006/jmbi.1993.1047. ISSN0022-2836. PMID8429558.
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Adzhubei, Alexei A.; Sternberg, Michael J.E.; Makarov, Alexander A. (2013). "Polyproline-II Helix in Proteins: Structure and Function". Journal of Molecular Biology. 425 (12): 2100–2132. doi:10.1016/j.jmb.2013.03.018. ISSN0022-2836. PMID23507311.
Adzhubei, Alexei A.; Sternberg, Michael J.E. (1993). "Left-handed Polyproline II Helices Commonly Occur in Globular Proteins". Journal of Molecular Biology. 229 (2): 472–493. doi:10.1006/jmbi.1993.1047. ISSN0022-2836. PMID8429558.