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Figure 1.
Figure 1. (a) DNA site for CAP. There are two conventions for numbering of positions within the DNA site for CAP:
convention 1 (Ebright et al., 1984a,b, 1987, 1989; Zhang & Ebright, 1990; Zhang et al., 1991; Gunasekera et al., 1992)
and convention 2 (Schultz et al., 1991). In this paper we use convention 1. (b) DNA molecule ``31-2'' used in the
previously reported structure of the CAP-DNA complex (Schultz et al., 1990, 1991). DNA molecule ``31-2'' contains
symmetry-related single-phosphate gaps between positions 9' and 10' and 13 and 14 (filled bars; see the text). (c) DNA
molecule ``31-2E'' used in the present structure of CAP-DNA complex. DNA molecule ``31-2E'' contains
symmetry-related single-phosphate gaps between positions 9 and 10 and 13' and 14' (filled bars; see the text).
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