domain:The cytochrome b5 heme-binding domain lacks the conserved iron-binding His residues at positions 107 and 131.,function:Receptor for progesterone.,similarity:Belongs to the cytochrome b5 family. MAPR subfamily.,similarity:Contains 1 cytochrome b5 heme-binding domain.,tissue specificity:Widely expressed, with highest expression in liver and kidney.,
Microsome membrane ; Single-pass membrane protein . Smooth endoplasmic reticulum membrane ; Single-pass membrane protein . Mitochondrion outer membrane ; Single-pass membrane protein ; Extracellular side .
Widely expressed, with highest expression in liver and kidney. Expressed by endometrial glands and stroma (at protein level) (PubMed:23793472).
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