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. 2003 Mar;84(3):1969–1976. doi: 10.1016/S0006-3495(03)75005-X

FIGURE 5.

FIGURE 5

Stereo model of the refined structure of the Pf3 capsid subunit (Molscript software (Kraulis, 1991)). The top panel shows two neighboring subunits (indices 11 and 17 of the assembled capsid). The bottom panel shows residues 34–44 of the subunit C-terminus with labels indicating Arg-37 and Trp-38. In this energy-minimized model (CNS software (Brunger et al., 1998)), the guanidinium group of Arg-37 is close to the indolyl ring of Trp-38 (Nη2 to Cζ2 distance of ∼3.5 Å) implying a cation-π interaction similar to that suggested (Gallivan and Dougherty, 1999) for the tyrosine kinase domain of the insulin receptor (Hubbard et al., 1994).