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. Author manuscript; available in PMC: 2013 Jun 21.
Published in final edited form as: Cell Cycle. 2008 Aug 18;7(16):2562–2569. doi: 10.4161/cc.7.16.6461

Figure 1.

Figure 1

Figure 1

Overall structure of the Bh-RNase HC:dsDNA complex and quality of the model. (A) The DDD complexed by two RNase H molecules (ribbon cartoons colored gray and blue) is viewed into the A-tract minor groove and nucleotides are colored green (G), yellow (C), red (A) and blue (T). Protein chain termini and terminal nucleotides are labeled and solid lines in black trace the helix axis. Asterisks indicate that the two strands of the DDD are symmetry-related in the crystal structure of the complex. (B) Final Fourier (2Fo-Fc) sum electron density contoured at the 1σ level in the region of Trp139 that interacts with the phosphate group of A5 (upper red residue).