The alpha type binds to PDGF-AA, PDGF-BB and PDGF-AB, whereas the beta type PDGFR binds with high affinity to PDGF-BB and PDGF-AB.
O de tipo alfa únese ao PDGF-AA, PDGF-BB e PDGF-AB, mentres que o PDGFR de tipo beta únese con alta afinidade a PDGF-BB e PDGF-AB.