In muscle, parvalbumin is thought to be involved in relaxation after contraction (By similarity). It binds two calcium ions (PubMed:15122922, PubMed:39584689). {ECO:0000250|UniProtKB:P02624, ECO:0000269|PubMed:15122922, ECO:0000269|PubMed:39584689}. This is the function of Ensembl gene identifier ENSG00000100362 (PVALB, parvalbumin).