Ready-to-use ELISA kits are available for the detection of membrane-associated ring finger (C3HC4) 4, an alias of the protein, membrane associated ring-CH-type finger 4. The official gene symbol is MARCHF4. The protein has a mass of 45.5 kDa and length of 410 residues. It may be known by other names, including: membrane-associated RING-CH protein IV, membrane associated ring finger 4, RING-type E3 ubiquitin transferase MARCH4, RING finger protein 174, and E3 ubiquitin-protein ligase MARCH4, and RNF174.