Calcium-dependent inactivation (CDI) of neuronal voltage-gated Ca channels (Ca1.2) is important for synaptic plasticity, which is associated with learning and memory. The Ca-dependent binding of calmodulin (CaM) to Ca1.2 is essential for CDI. Here we report NMR assignments for a CaM mutant (D21A/D23A/D25A/E32Q/D57A/D59A/N61A/E68Q, called CaM) that contains two Ca bound at the third and fourth EF-hands (EF3 and EF4) and is bound to the IQ-motif (residues 1644-1665) from Ca1.2 (BMRB accession no. 27692).
Calcium-dependent inactivation (CDI) of neuronal voltage-gated Ca channels (Ca1.2) is important for synaptic plasticity, which is associated with learning and memory. The Ca-dependent binding of calmodulin (CaM) to Ca1.2 is essential for CDI. Here we report NMR assignments for a CaM mutant (D21A/D23A/D25A/E32Q/D57A/D59A/N61A/E68Q, called CaM) that contains two Ca bound at the third and fourth EF-hands (EF3 and EF4) and is bound to the IQ-motif (residues 1644-1665) from Ca1.2 (BMRB accession no. 27692).