Evaluation Summary:
This manuscript presents evidence that the adipocyte-derived protein Ism1, which signals through a typical receptor tyrosine kinase, induces unique phosphoproteome signatures when compared to insulin, and regulates skeletal muscle force production. The manuscript should be of interest to those who study integrated physiology and skeletal muscle physiology. While the data suggest there may be some effects on myofiber size, further study is needed before any conclusions can be made as to what, if any, effects Ism1 has on myofiber size.
(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #1 and Reviewer #2 agreed to share their names with the authors.)