This data is provided by the DNA replication origin database, OriDB. The original data is from the following study:
Mapping of early firing origins on a replication profile of budding yeast.
Nami Yabuki, Hiromichi Terashima, Kunio Kitada
Genes Cells (2002), 7(8):781-9. PubMed.
To cite OriDB please reference the following paper:
OriDB: a DNA replication origin database.
Conrad A. Nieduszynski, Shin-ichiro Hiraga, Prashanth Ak1, Craig J. Benham1 and Anne D. Donaldson
Nucleic Acids Research, 35: D40-D46; doi:10.1093/nar/gkl758. PubMed. PubMedCentral.