output of protein translation immunoglobulin gamma Fc receptor I Category=family. Note: The active protein is a low affinity receptor for immunoglobulin gamma chain Fc region. It comprises the translation products of the FCGR1 gene (mouse) or one of the closely related FCGR1A, FCGR1B, or FCGR1C genes (human). FCGR1C may be a pseudogene in human. protein_coding_gene