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. Author manuscript; available in PMC: 2023 Jan 3.
Published in final edited form as: Biochemistry. 2022 Sep 7;61(18):1955–1965. doi: 10.1021/acs.biochem.2c00378

Table 1.

ITC Binding Parameters

sample K1 (M−1) ΔH1 (kcal/mol) K2 (M−1) ΔH2 (kcal/mol)
CaM/CaM1 1.1 ± 0.1 × 106 −7.5 ± 0.2 4.2 ± 0.5 × 103 +40 ± 4
CaM C-lobe/CaM1 3.4 ± 0.7 × 104 +2.0 ± 0.4
CaM N-lobe/CaM1 1.8 ± 0.2 × 105 −2.5 ± 0.2
CaM/CaM2 7.3 ± 1.0 × 106 −4.5 ± 1.6 2.9 ± 0.5 × 106 +16 ± 2
CaM C-lobe/CaM2 9.8 ± 1.0 × 106 −2.0 ± 0.1
CaM N-lobe/CaM2 <1.8 × 104 +7.5 ± 4.0
CaM N-lobe/CaM1F575E <2.0 × 104 +0.7 ± 0.5
CaM C-lobe/CaM2L1132E 1.8 ± 0.5 × 104 +3.1 ± 0.5
CaM C-lobe/CaM2L1136E 1.2 ± 0.7 × 104 +2.6 ± 1.8