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. 1997 Sep 30;94(20):10786–10791. doi: 10.1073/pnas.94.20.10786

Figure 1.

Figure 1

Modular nature of ARS elements. The functional elements defined by mutational analysis of four ARS elements are indicated by boxes on the line diagrams. All four are aligned by their essential matches to the ACS and drawn to the same scale. The tick marks below the lines indicate the positions +8, +10, +15, +17, and +18 relative to the end of the essential match to the ACS (see text). (A) ARS1 (12). (B) ARS307 (13, 14). (C) ARS305 (15). (D) ARS121 (16). The region labeled A+B1? corresponds to the “core” element of Walker et al. (16). ATR is the A+T-rich domain. B3-like corresponds to the pair of ARS binding factor 1 binding sites.