The hyperthermophile chromosomal protein Sac7d sharply kinks DNA.
Robinson, H., Gao, Y.G., McCrary, B.S., Edmondson, S.P., Shriver, J.W., Wang, A.H.(1998) Nature 392: 202-205
- PubMed: 9515968 
- DOI: 10.1038/32455
- Primary Citation of Related Structures:  
1AZP, 1AZQ - PubMed Abstract: 
The proteins Sac7d and Sso7d belong to a class of small chromosomal proteins from the hyperthermophilic archaeon Sulfolobus acidocaldarius and S. solfactaricus, respectively. These proteins are extremely stable to heat, acid and chemical agents. Sac7d binds to DNA without any particular sequence preference and thereby increases its melting temperature by approximately 40 degrees C ...