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2020 ; 21
(1
): 49
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gab.com Text
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Identification of a druggable binding pocket in the spike protein reveals a key
site for existing drugs potentially capable of combating Covid-19 infectivity
#MMPMID32611313
Drew ED
; Janes RW
BMC Mol Cell Biol
2020[Jul]; 21
(1
): 49
PMID32611313
show ga
BACKGROUND: Following the recent outbreak of the new coronavirus pandemic
(Covid-19), the rapid determination of the structure of the homo-trimeric spike
glycoprotein has prompted the study reported here. The aims were to identify
potential "druggable" binding pockets in the protein and, if located, to virtual
screen pharmaceutical agents currently in use for predicted affinity to these
pockets which might be useful to restrict, reduce, or inhibit the infectivity of
the virion. RESULTS: Our analyses of this structure have revealed a key
potentially druggable pocket where it might be viable to bind pharmaceutical
agents to inhibit its ability to infect human cells. This pocket is found at the
inter-chain interface that exists between two domains prior to the virion binding
to human Angiotensin Converting Enzyme 2 (ACE2) protein. One of these domains is
the highly mobile receptor binding domain, which must move into position to
interact with ACE2, which is an essential feature for viral entry to the host
cell. Virtual screening with a library of purchasable drug molecules has
identified pharmaceuticals currently in use as prescription and over the counter
medications that, in silico, readily bind into this pocket. CONCLUSIONS: This
study highlights possible drugs already in use as pharmaceuticals that may act as
agents to interfere with the movements of the domains within this protein
essential for the infectivity processes and hence might slow, or even halt, the
infection of host cells by this new coronavirus. As these are existing
pharmaceuticals already approved for use in humans, this knowledge could
accelerate their roll-out, through repurposing, for affected individuals and help
guide the efforts of other researchers in finding effective treatments for the
disease.