Table II.

Features of TOM20 proteins of Arabidopsis

	TOM20-1	TOM20-2	TOM20-3	TOM20-4a
No. of amino acids	188	210	202	187
Calculated molecular  mass (kDa)	21.3	23.2	22.6	21.0
Calculated isoelectric  point	5.8	5.5	4.9	5.4

^a As predicted by “GeneBuilder.”