Download MendeleyCrystal structure of the hyperthermophilic archaeal DNA-binding protein Sso10b2 at a resolution of 1.85 Angstroms
Chou, C.C., Lin, T.W., Chen, C.Y., Wang, A.H.J.(2003) J Bacteriol 185: 4066-4073
- PubMed: 12837780
- DOI: https://doi.org/10.1128/JB.185.14.4066-4073.2003
- Primary Citation of Related Structures:
1UDV - PubMed Abstract:
The crystal structure of a small, basic DNA binding protein, Sso10b2, from the thermoacidophilic archaeon Sulfolobus solfataricus was determined by the Zn multiwavelength anomalous diffraction method and refined to 1.85 A resolution. The 89-amino-acid protein adopts a betaalphabetaalphabetabeta topology. The structure is similar to that of Sso10b1 (also called Alba) from the same organism. However, Sso10b2 contains an arginine-rich loop RDRRR motif, which may play an important role in nucleic acid binding. There are two independent Sso10b2 proteins in the asymmetric unit, and a plausible stable dimer could be deduced from the crystal structure. Topology comparison revealed that Sso10b2 is similar to several RNA-binding proteins, including IF3-C, YhhP, and DNase I. Models of the Sso10b2 dimer bound to either B-DNA or A-DNA have been constructed.
Organizational Affiliation:
Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan.
