TABLE 1.

Number of particles traced for size analysis

The following abbreviations are used: WT, wild-type; RF, replication fork DNA; HJ, Holliday junction DNA.

Sample	No. of particles analyzed
Free WRN
WT-WRN	200
K577M-WRN	123
Apoferritin	139
DNA-bound WRN
WT-WRN: RF	20
K577M-WRN: RF	43
WT-WRN: HJ	28
K577M-WRN: HJ	16