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. Author manuscript; available in PMC: 2010 Apr 21.
Published in final edited form as: Structure. 2008 Mar;16(3):460–467. doi: 10.1016/j.str.2007.12.016

Table 2. Enzymatic parameters.

Kmapp ATP (μM) Kmapp peptide (μM) kcat (min-1) [Mn2+] (mM) IC50 lapatinib (μM) Kiapp lapatinib (nM)
ErbB4 KD 10 ± 2 169 ± 35 52 ± 10 2 1.4 ± 0.1 700
ErbB2 KD 24 ± 3 57 ± 5 6.1 ± 0.2 10 -- -
EGFR ICD* 5 899 ± 200 1.32 0.62 -- 3 ± 0.2
ErbB2 ICD* 13 157 ± 40 3.60 1.60 -- 13 ± 1
ErbB4 ICD* 21 144 ± 22 5.58 0.20 > 1 347 ± 16
*

These are previously reported values. (Brignola et al. 2002 and Wood et al. 2004).