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Figure 4.
FIG. 4. Model of metal ion, NTP and RNA binding to NV RdRP
constructed by comparison with the structure of the human
immunodeficiency virus-1 reverse
transcriptase·TTP·DNA ternary complex (52).
"Front" (A) and "top" (B) stereoviews of the modeled complex.
The carboxyl-terminal segment (residues 503-507) is drawn as a
space-filling and ball-and-stick representation, respectively,
in the two panels.
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