Key result
Atomic structure reveals the troponin C-I complex forms a compact globular conformation driven by hydrophobic interactions.
Why the study?
The structural basis of hydrophobic interactions in the formation of functional troponin and its role in Ca2+ regulation of muscle contraction was not fully understood.
Population
Troponin C in complex with N-terminal fragment of troponin I (TnI1-47)
Design
Structural analysis at 2.3 Å resolution
Authors
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Provides high-resolution troponin C-I structure; extends mechanistic models but leaves open clinical translation.
This structural analysis reveals the specific hydrophobic and polar interactions between troponin C and troponin I that are fundamental to the calcium regulation of muscle contraction.
Dmitry et al. (1999) studied Muscle contraction. Atomic structure determination of TnC/TnI 1-47 complex was evaluated on Atomic structure at 2.3 Å resolution. The atomic structure of troponin C in complex with the N-terminal fragment of troponin I at 2.3 Å resolution revealed a compact globular conformation driven by hydrophobic interactions.
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