Hemoglycin is a completely abiotic molecule that forms in molecular clouds going on to protoplanetary disks, way before biochemistry on exoplanets like Earth begins. Hemoglycin via its glycine could seed an exoplanet (one able to support early biochemistry) but its main function appears to be the accretion of matter via formation of an extensive low-density lattice in space in a protoplanetary disk. Besides being present in carbonaceous meteorites, hemoglycin has also been extracted and crystallized from a fossil stromatolite that formed on Earth 2.1 billion years ago. Potentially this fossil hemoglycin was delivered during the Late Heavy Bombardment (LHB) to Earth. Data to support this being the hemoglycin in the fossil has extraterrestrial isotopes similar to that in meteorites.
The polymer on the precambrian Earth could have functioned to drive the Great Oxygenation Event (GOE) beginning 2.4 Gya by splitting water in response to ultraviolet irradiation. Also, it could provide an energy source to early biochemistry and/or it simply delivered a source of polymer glycine.