Ready-to-use ELISA kits are available for the detection of C1orf77, an alias of the protein, chromatin target of PRMT1. The official gene symbol is CHTOP. The protein, with a mass of 26.4 kDa and length of 248 residues, is reported to be nuclear. It may be known by other names, including: SRAG-3, SRAG, C1orf77, small protein rich in arginine and glycine, friend of PRMT1 protein, and chromatin target of PRMT1 protein, and pp7704.