There are a number of ELISA Kits available for the measurement of eukaryotic translation initiation factor 3, subunit J1, another term for the human protein, eukaryotic translation initiation factor 3 subunit J. Other synonyms may include: eukaryotic translation initiation factor 3 subunit 1 (alpha 35kD), EIF3S1, eIF3-alpha, and eIF3-p35. It is encoded by the EIF3J gene to yield a protein 258 amino acids in length and 29.1 kDa in size. However, there are up to 3 reported isoforms. The protein is categorized into the EIF-3 subunit J family. Versions of eukaryotic translation initiation factor 3, subunit J1 are present in other organisms, including: Mouse, Rat, Zebrafish, Frog.