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Composite binding site formation

Binding of Genome polyprotein to integrin receptors depends on pre-assembly of Integrin alpha-V (ITGAV)-Integrin beta-6 (ITGB6) heterodimers, since association of the integrin alpha and beta subunits results in the formation of a composite binding site for the RGD motif in the ligand.

(1) Integrin alpha-V (ITGAV)
(2) Integrin beta-6 (ITGB6)
(3) Genome polyprotein

This is a sequential switch. The interactions in this switch take place in a defined order. The order is defined by numbers to the left of each interaction. More than one interaction can occur in each step, these interactions occur independently but are necessary for future step
2Interaction #2 - Interaction #1 ITGAV - ITGB6

Requires Interaction #1 ITGAV - ITGB6

(3) LIG_RGD motif (858RGD860) in Genome polyprotein
(4) Interaction #1 ITGAV - ITGB6

(1) Integrin alpha v beta 6 is an RGD-dependent receptor for coxsackievirus A9.
Williams et al. J. Virol. (2004)

See also

Other switches involving participants
Integrin alpha-V (ITGAV) - 8 more (view)
Integrin beta-6 (ITGB6) - 1 more (view)

Other switches involving interfaces
FG-GAP repeat - 13 more (view)
Integrin, beta chain - 13 more (view)
LIG_RGD - 12 more (view)

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