About the Authors

Andrew F. Neuwald

aneuwald@som.umaryland.edu

Affiliation Institute for Genome Sciences and Department of Biochemistry & Molecular Biology, University of Maryland School of Medicine, BioPark II, Room 617, Baltimore, MD, United States of America

Stephen F. Altschul

Affiliation National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: AFN. Formal analysis: AFN SFA. Investigation: AFN. Methodology: AFN SFA. Project administration: AFN. Software: AFN. Validation: AFN. Visualization: AFN. Writing – original draft: AFN. Writing – review & editing: AFN SFA.