1zku is a 18 chain structure with sequence from Escherichia virus T4. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
BP09_BPT4 Baseplate protein that connects the long tail fibers to the baseplate and probably triggers the tail contraction after virus attachment to a host cell (PubMed:10545330). Involved in the tail assembly (PubMed:21129200).[1][2]
Evolutionary Conservation
Checkto colour the structure by Evolutionary Conservation, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
References
↑ Kostyuchenko VA, Navruzbekov GA, Kurochkina LP, Strelkov SV, Mesyanzhinov VV, Rossmann MG. The structure of bacteriophage T4 gene product 9: the trigger for tail contraction. Structure. 1999 Oct 15;7(10):1213-22. PMID:10545330
↑ Leiman PG, Arisaka F, van Raaij MJ, Kostyuchenko VA, Aksyuk AA, Kanamaru S, Rossmann MG. Morphogenesis of the T4 tail and tail fibers. Virol J. 2010 Dec 3;7:355. doi: 10.1186/1743-422X-7-355. PMID:21129200 doi:10.1186/1743-422X-7-355