Table 1.

Protein diffusion coefficients^* in aqueous solutions and in muscle cells

Protein	t, °C	Glass capillary				Muscle cell
		Dilute		Concentrated		Soleus fiber		Cardiomyocyte
		Dl	Dr	Dl	Dr	Dl	Dr	Dl	Dr
Lactalbumin	22	11.3  ± 1.0 (13)	11.3  ± 1.6 (22)	3.1  ± 0.4 (19)	2.9  ± 0.6 (18)	1.3  ± 0.2  (31)	1.1  ± 0.3 (42)	1.2  ± 0.4 (24)	1.2  ± 0.5 (55)
Myoglobin	22	9.9  ± 0.8 (22)	9.7  ± 1.1 (15)	2.8  ± 0.4 (21)	2.9  ± 0.4 (27)	1.2  ± 0.4† (17)	1.2  ± 0.3 (46)	1.1  ± 0.4 (31)	1.1  ± 0.4 (38)
Myoglobin	37	14.8  ± 1.7 (24)				2.2  ± 0.1  (24)			2.0  ± 0.1 (4)
Ovalbumin	22	7.2  ± 0.9 (10)				0.52  ± 0.16 (4)			0.53  ± 0.25 (12)

Number of experiments for each is shown in parentheses. 

^*All values in 10⁻⁷ cm²/s, mean ± SE. 

^† Values measured previously with different techniques were (1.2 ± 0.1) × 10⁻⁷ cm²/s (4) and (1.3 ± 0.1) × 10⁻⁷ cm²/s (5).