Ready-to-use ELISA kits are available for the detection of basic helix-loop-helix family, member e22, an alias of the protein, basic helix-loop-helix family member e22. The official gene symbol is BHLHE22. The protein, with a mass of 37 kDa and length of 381 residues, is reported to be nuclear. It may be known by other names, including: Beta3a, Beta3, trinucleotide repeat containing 20, class B basic helix-loop-helix protein 5, basic helix-loop-helix domain containing class B 5, and class E basic helix-loop-helix protein 22, and TNRC20.