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What property of the receptor tyrosine kinases has the ability to fine-tune the specificity of receptors for ligand binding and downstream signaling?

What property of the receptor tyrosine kinases has the ability to fine-tune the specificity of receptors for ligand binding and downstream signaling? Correct Answer Heterodimer formation

The EGF receptor can form heterodimers with other members of the same subfamily of receptor tyrosine kinases, in addition to the ability to form homodimers. Although a small number of receptors can be incorporated into a large number of pairings, the formation of heterodimers has the ability to fine-tune the specificity of ligand binding and downstream signaling receptors.

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