Key result
Deletion or mutation of the N-terminal LIM domain resulted in 3- to 7-fold higher kinase activities compared with wild-type LIMK1, indicating it negatively regulates kinase activity.
Population
In vitro biochemical assays and cultured cells
Comparison
LIMK1 mutants with deleted LIM domains or… vs Wild-type LIMK1
Design
Preclinical
Authors
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No immediate clinical implications from LIMK1 regulation; leaves open validation in cardiovascular disease models.
Effect estimate: 3-7-fold higher
The N-terminal LIM domain of LIMK1 negatively regulates its kinase activity through direct interaction with the C-terminal kinase domain.
Nagata et al. (1999) studied this question. LIM domain deletion or mutation vs. Wild-type LIMK1 was evaluated on Kinase activity in vitro (3-7-fold higher). Deletion or mutation of the N-terminal LIM domain resulted in 3- to 7-fold higher kinase activities compared with wild-type LIMK1, indicating it negatively regulates kinase activity.
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