If we are made in Gods image, God is made of gag, pol, and env.
And God sent his only son to Earth, ERV9, to perform miracles in His name. Like bringing dead genes back to life.
LOL!
A fun paper in PLOS Genetics describes an absolutely bizarre scenareo– A gene, IRGM, was ‘lost’ in the primate lineage like 50 million years ago. It turned into a pseudogene thanks to an Alu insertion, accumulation of a couple premature stop-codons, and a nice little frame-shift.
Well, about 24-20 million years ago, a retrovirus (ERV9) plopped its little butt upstream of IRGM, IRGM lost its stops and frameshift, and IRGM became functional again with a nice, shiny new ERV LTR as a promoter in gorillas, chimps, and humans!
Yay! Cause IRGM is a component of our innate immune system, specializing in whomping bacteria! Could be a handy weapon to have around!
No yay! Cause IRGM isnt the same IRGM that we had 50 million years ago. Its now got an ERV LTR for a promoter, it sits in a different part of the genome, and its surrounding genome landscape has changed dramatically– 33 retrotransposons (LINES/SINES/LTRs) have taken up residence upstream of IRGM!! Some people have a 20,000 base-pair deletion upstream from IRGM. This leads to expression of IRGM in wrong tissues at wrong levels, which could be a potential cause of Crohns disease.
But there is no doubt, this gene was dead, and was brought back to life, in part, though an ERV promoter. I cant complain about science journalists messing this up*. Its just good old fashioned cool
*I will, however, bitch about that “USEFUL JUNK?!? HURRR!” comment… Jesus. I mean, ERV9.