Growth factor, augmenter of liver regeneration (ERV1 homolog, S. cerevisiae), also known as GFER, or Hepatopoietin is a protein which in humans is encoded by the GFERgene. This gene is also known as essential for respiration and vegatative growth, augmenter of liver regeneration, and growth factor of Erv1-like/Hepatic regenerative stimulation substance.[5][6][7]
The GFER gene is located on the p arm of chromosome 16 at position 13.3 and it spans 3,600 base pairs.[5] The GFER gene produces a 15.4 kDa protein composed of 130 amino acids.[8][9] The structure of the protein is a homodimer which has been found to be fairly similar to the scERV1 protein of yeast.[10]
The gene resides on chromosome 16 in the interval containing the locus for polycystic kidney disease (PKD1). The putative gene product is 42% similar to the scERV1 protein of yeast.
The hepatotrophic factor designated augmenter of liver regeneration (ALR) is thought to be one of the factors responsible for the extraordinary regenerative capacity of mammalian liver. It has also been called hepatic regenerative stimulation substance (HSS). The yeast scERV1 gene had been found to be essential for oxidative phosphorylation, the maintenance of mitochondrial genomes, and the cell division cycle. The human gene is both the structural and functional homolog of the yeast scERV1 gene.[5]
Lisowsky T (March 1992). "Dual function of a new nuclear gene for oxidative phosphorylation and vegetative growth in yeast". Molecular & General Genetics. 232 (1): 58–64. doi:10.1007/BF00299137. PMID1552903. S2CID27133342.
Renan MJ, Reeves BR (1987). "Chromosomal localization of human endogenous retroviral element ERV1 to 18q22----q23 by in situ hybridization". Cytogenetics and Cell Genetics. 44 (2–3): 167–70. doi:10.1159/000132365. PMID3568764.
Yang XM, Hu ZY, Xie L, Wu ZZ, Wu CT, He FC (October 1997). "[In vitro stimulation of HTC hepatoma cell growth by recombinant human augmenter of liver regeneration (ALR)]". Sheng Li Xue Bao. 49 (5): 557–61. PMID9813496.
Hofhaus G, Stein G, Polimeno L, Francavilla A, Lisowsky T (May 1999). "Highly divergent amino termini of the homologous human ALR and yeast scERV1 gene products define species specific differences in cellular localization". European Journal of Cell Biology. 78 (5): 349–56. doi:10.1016/S0171-9335(99)80069-7. PMID10384986.
Li Y, Xing G, Wang Q, Li M, Wei H, Fan G, Chen J, Yang X, Wu C, Chen H, He F (December 2001). "Hepatopoietin acts as an autocrine growth factor in hepatoma cells". DNA and Cell Biology. 20 (12): 791–5. doi:10.1089/104454901753438606. PMID11879572.