A power source apparatus comprising: a direct current power source to output a first voltage; a load driven with a second voltage higher than the first voltage; a booster converter to boost an output from the direct current power source to the second voltage; and a control circuit, arranged to operate at a voltage higher than the first voltage, to control the booster converter. When it is determined that the ABS is active during cornering while braking and the vehicle is not traveling in the intended cornering direction, a steering control section computes a front wheel steering angle correction amount for correcting the front wheel steering angle, and added in the intended cornering direction so as to set front wheels in a vehicle traveling direction. When the header is changed, a CRC associated with the header is recalculated such that a residue of the initial seed value is always obtained. Then, a second mask pattern is formed on the substrate for masking portions of the substrate which are processed into the bridges. The compounds identified by the methods are useful in the treatment of disorders attributed to dysregulated ubiquitin conjugating enzyme function, specifically in hyperproliferative disorders.