Simple models are presented that describe the rules for almost all the packing that occurs between and among α -helices and pleated sheets. These packing rules, together with the primary and secondary ...

Scientists at Purdue University and the University of Minnesota have solved the three-dimensional structure of the central component of a biological "motor" that powers the DNA packaging system in a ...

All retroviral genomic RNAs contain a cis-acting packaging signal by which dimeric genomes are selectively packaged into nascent virions. However, it is not understood how Gag (the viral structural ...