Provided herein a small molecule protein for indicating calcium ions and uses thereof. The amino acid sequence of said smal molecule protein is shown in SEQ ID NO.1 The small molecule protein named GEM is fused with calmodulin (CaM) and myosin light chain kinase M13, and can be used for recording brain activity in freely moving animals using calcium imaging technology.
SMALL MOLECULE PROTEIN FOR INDICATING CALCIUM IONS AND USES THEREOF