Pyrene-actin assembly assay

BC Baoyu Chen
HC Hui-Ting Chou
CB Chad A Brautigam
WX Wenmin Xing
SY Sheng Yang
LH Lisa Henry
LD Lynda K Doolittle
TW Thomas Walz
MR Michael K Rosen
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Actin polymerization assays were performed at 22°C using a PTI Fluorometer (Photon Technology International) as previously described (Chen et al., 2014a). Reactions contained 4 μM actin (5% pyrene labeled), 10 nM Arp2/3 complex, 100 nM WRC217VCA (Figure 1—figure supplement 1c; consisting of Sra1, Nap1, HSPC300, Abi2(1-158) and WAVE1(1–217)-(GGS)6-(485-559)) or WRC230VCA (Figure 6; consisting of Sra1, Nap1, HSPC300, Abi2(1-158) and WAVE1(1–230)-(GGS)6-(485-559)) or VCA, and various amounts of Rac1 Q61L loaded with GMPPNP.

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