journal menu
![[Figure 2]](mn5067fig2mag.jpg)
|
|
Figure 2
Topology of the NucA active center. (a) Ribbon diagram portraying the NucA (H148A) ββα-Me finger motif: α-helices are shown in blue and β-strands in green. The hydrated Mg2+ ion (purple; water molecules in red) is bound within the active site, chelated directly by Asn179 (blue). A 2Fo − Fc electron-density map for this cluster (gray) is contoured at 1σ. (b) Detailed rendering of interactions near the active center. Chelation of the divalent Mg2+ ion (purple) by Asn179 and water molecules (2.1 Å distance) is shown as solid black lines. An extensive hydrogen-bonding network (dashed black lines) connects second-shell and third-shell residues (pink) to the active center. |
![[Figure 2]](mn5067fig2.jpg)
 | STRUCTURAL BIOLOGY |
ISSN: 2059-7983
Open 
access
access
