Predicted to enable procollagen-proline 4-dioxygenase activity. Acts upstream of or within regulation of erythrocyte differentiation. Predicted to be located in membrane. Predicted to be integral component of membrane. Predicted to be active in endoplasmic reticulum. Orthologous to human P4HTM (prolyl 4-hydroxylase, transmembrane). [provided by Alliance of Genome Resources, Apr 2022]