| First Author | Anderson DM | Year | 2016 |
| Journal | Sci Signal | Volume | 9 |
| Issue | 457 | Pages | ra119 |
| PubMed ID | 27923914 | Mgi Jnum | J:260257 |
| Mgi Id | MGI:6140721 | Doi | 10.1126/scisignal.aaj1460 |
| Citation | Anderson DM, et al. (2016) Widespread control of calcium signaling by a family of SERCA-inhibiting micropeptides. Sci Signal 9(457):ra119 |
| abstractText | Micropeptides function as master regulators of calcium-dependent signaling in muscle. Sarco/endoplasmic reticulum Ca(2+) ATPase (SERCA), the membrane pump that promotes muscle relaxation by taking up Ca(2+) into the sarcoplasmic reticulum, is directly inhibited by three muscle-specific micropeptides: myoregulin (MLN), phospholamban (PLN), and sarcolipin (SLN). The widespread and essential function of SERCA across diverse cell types has raised questions as to how SERCA is regulated in cells that lack MLN, PLN, and SLN. We identified two transmembrane micropeptides, endoregulin (ELN) and another-regulin (ALN), that share key amino acids with their muscle-specific counterparts and function as direct inhibitors of SERCA pump activity. The distribution of transcripts encoding ELN and ALN mirrored that of SERCA isoform-encoding transcripts in nonmuscle cell types. Our findings identify additional members of the SERCA-inhibitory micropeptide family, revealing a conserved mechanism for the control of intracellular Ca(2+) dynamics in both muscle and nonmuscle cell types. |
