Computational predictions (%) for soluble expression as a function of the length of the domain. Representatives of each domain type were sorted out in the increasing order of their length. Means of domain lengths of blocks of 5 domains were plotted against the mean solubility predictions (%) for the corresponding five domains in the block. A) DBL domains are indicated as follows: DBL1α (solid line), DBL2β + C2 (dashed line), DBL2-4γ (dotted line), DBL2-5δ (long-dashed line), DBL2-7ε (combined dash-dotted line). B) ATS domains are indicated by a dotted line, CIDRα by a solid line and CIDR2β domains by a dashed line.