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. 2023 Sep 14;6:942. doi: 10.1038/s42003-023-05330-y

Fig. 6. Speg-binding proteins and effects of Speg deficiency in the heart.

Fig. 6

a Proteins immunoprecipitated from the hearts of HA-Speg mice using antibodies against the HA-tag and identified by mass spectrometry (n = 6 for each). b Effects of Speg deficiency on the levels of Fsd2 (n = 8 for each) and Esd (n = 9 for each) in homogenates from hearts of Speg-KO mice. A representative western blot is shown on the left. c Effects of Speg deficiency on the levels of Fsd2 and Esd in homogenates from hearts of HA-Speg mice (n = 6 for each). d Heatmap of specific RyR2 binding proteins from the hearts of control and Speg-KO mice (n = 9 for each). e Proteins that are significantly changed the cardiac RyR2 IP from controls compared Speg-KO mice. f Proteins that are significantly changed the cardiac RyR2 IP from controls compared HA-Speg mice (n = 6 for each). g Heatmap of specific Jph2-binding proteins from the hearts of control and Speg-KO mice (n = 9 for each). h Proteins that are significantly changed the cardiac Jph2 IPs from controls compared Speg-KO mice. i Proteins that are significantly changed the cardiac Jph2 IPs from controls compared HA-Speg mice (n = 6 for each). j Effect of Speg deficiency on the relative amounts of Esd, Cmya5 and Fsd2 in the cardiac Jph2 IP from Speg-KO mice. k Effect of Speg deficiency on the relative amounts of Esd, Cmya5, and Fsd2 in the cardiac Jph2 IP from HA-Speg mice. l Model summarizing the findings from the proteomic studies in cardiac muscle. Data are plotted as the mean ± SD. ****P < 0.0001, ***P < 0.001, **P < 0.01, and *P < 0.05.