Length and PKA Dependence of Force Generation and Loaded Shortening in Porcine Cardiac Myocytes

<table>(a) Pig cardiac myocyte sarcomere length-tension relationships before and after PKA treatment. PKA-induced phosphorylation markedly steepened the length-tension relationship.  (b) An autoradiogram showing radiolabeled phosphate incorporation into pig cardiac myofibrillar proteins (MyBP-C and cTnI) upon PKA treatment. Without PKA treatment, there was no radiolabelled ATP incorporation (data not shown). </table>

Biochemistry Research International

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Figure 2

Figure 2: Length and PKA Dependence of Force Generation and Loaded Shortening in Porcine Cardiac Myocytes 