Erstellt von gina_evans0312
vor etwa 11 Jahre
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Frage | Antworten |
What level must Ca2+ reach to bind to the troponin complex? | >5 micro moles |
Which part of the troponin complex does Ca2+ bind to? | Troponin C |
What happens once Ca2+ has bound? | Troponin I pulls the tropomyosin away from the actin |
Once the tropomyosin pulls away from the actin... | The myosin head can bind to it |
ADP is released from the head and... | ATP replaces it |
Once ATP binds,... | The head releases the actin |
ATP is hydrolysed to ADP & Pi, and.... | The myosin head undergoes a conformational change |
Once hydrolysis occurs... | The myosin head weakly rebinds |
When the Pi is released... | A powerstroke occurs |
What happens in the power stroke? | The myosin head returns to its original conformation pulling the actin with it |
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