JCS -- Powell et al. 114 (20): 3673 Figure IG2

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Fig. 2. Distribution of IP₃Rs, Ca²⁺ATPase and ${alpha}$ -actinin in single optical sections (750±75 nm). Top panels: the SR labels for both IP₃R (left panel) and Ca²⁺ATPase (middle panel) in a cross-striated pattern; the cross striations are superimposable (yellow in right panel). By contrast, only anti-IP₃R stains the nuclear envelope region. Bottom panels: a different polyclonal anti-IP₃R antibody (IP₃R-M) (left panel) also reveals cross-striated staining. Middle panel, ${alpha}$ -actinin staining pattern; right panel, overlay of the two images.