Summary information and primary citation
- PDB-id
- 2bpa; SNAP-derived features in text and JSON formats;
DNAproDB
- Class
- virus-DNA
- Method
- X-ray (3.0 Å)
- Summary
- Atomic structure of single-stranded DNA bacteriophage phix174 and its functional implications
- Reference
- McKenna R, Xia D, Willingmann P, Ilag LL, Krishnaswamy S, Rossmann MG, Olson NH, Baker TS, Incardona NL (1992): "Atomic structure of single-stranded DNA bacteriophage phi X174 and its functional implications." Nature, 355, 137-143. doi: 10.1038/355137a0.
- Abstract
- The mechanism of DNA ejection, viral assembly and evolution are related to the structure of bacteriophage phi X174. The F protein forms a T = 1 capsid whose major folding motif is the eight-stranded antiparallel beta barrel found in many other icosahedral viruses. Groups of 5 G proteins form 12 dominating spikes that enclose a hydrophilic channel containing some diffuse electron density. Each G protein is a tight beta barrel with its strands running radially outwards and with a topology similar to that of the F protein. The 12 'pilot' H proteins per virion may be partially located in the putative ion channel. The small, basic J protein is associated with the DNA and is situated in an interior cleft of the F protein. Tentatively, there are three regions of partially ordered DNA structure,
