About the Authors

Zachary Lippman

Contributed equally to this work with: Zachary Lippman, Bruce May

Affiliation Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, United States of America

Bruce May

Contributed equally to this work with: Zachary Lippman, Bruce May

Affiliation Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, United States of America

Cristy Yordan

Affiliation Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, United States of America

Tatjana Singer

Affiliation Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, United States of America

Rob Martienssen

To whom correspondence should be addressed. E-mail: martiens@cshl.org

Affiliation Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, United States of America

Competing Interests

The authors have declared that no conflicts of interest exist.

Author Contributions

ZL, BM, and RM conceived and designed the experiments. ZL, BM, and CY performed the experiments. ZL, BM, and CY analyzed the data. ZL, BM, and TS contributed reagents/materials/analysis tools. ZL, BM, and RM wrote the paper.