TABLE 2.

Chemical exchange parameters of Csk-SH2 in the presence of Cbp5, Cbp6, or Cbp7

Peptide	SH2	pB/pA	koff	kex	R1
			s−1	s−1	s−1
Cbp5	Gly-162	1.04 ± 0.02	0.80 ± 0.05	1.65 ± 0.10	1.66 ± 0.09
	Val-172		0.86 ± 0.08	1.78 ± 0.15	1.69 ± 0.13
Cbp6	Gly-162	1.22 ± 0.02	6.69 ± 0.37	15.0 ± 0.8	1.13 ± 0.04
	Val-172		6.72 ± 0.69	15.1 ± 1.5	1.23 ± 0.06
Cbp7	Gly-162	0.90 ± 0.05	23.1 ± 3.2	44.0 ± 5.6	1.56 ± 0.07
	Val-172		16.4 ± 6.0	31.2 ± 11.4	1.24 ± 0.13