Pediatricsintermediate
Which bacterial structure is specifically described as mimicking cardiac myosin?
Answer
The alpha-helical coiled-coil GAS M protein
Explanation
The lecture describes structural similarity between cardiac myosin and the **alpha-helical coiled-coil M protein**, as well as the GAS epitope N-acetylglucosamine. **Key takeaway:** M-protein mimicry helps explain cardiac autoimmunity. **Glossary:** M protein: a GAS surface protein associated with virulence.
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