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2014 ; 9
(12
): 1319-27
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Structure and function of bacteriophage T4
#MMPMID25517898
Yap ML
; Rossmann MG
Future Microbiol
2014[]; 9
(12
): 1319-27
PMID25517898
show ga
Bacteriophage T4 is the most well-studied member of Myoviridae, the most complex
family of tailed phages. T4 assembly is divided into three independent pathways:
the head, the tail and the long tail fibers. The prolate head encapsidates a 172
kbp concatemeric dsDNA genome. The 925 Å-long tail is surrounded by the
contractile sheath and ends with a hexagonal baseplate. Six long tail fibers are
attached to the baseplate's periphery and are the host cell's recognition
sensors. The sheath and the baseplate undergo large conformational changes during
infection. X-ray crystallography and cryo-electron microscopy have provided
structural information on protein-protein and protein-nucleic acid interactions
that regulate conformational changes during assembly and infection of Escherichia
coli cells.