Just like the adenine nucleotide translocator moves ATP/ADP in and out, this one moves loose phosphate in.
Both of those together recycle the cellular respiration carriers from/to the mitochondria.
A single transmembrane protein that moves ATP out and ADP in of the mitochondrion. So crucial.
Present in chormosome 4.
Video 1. Energized about the Mechanism of ADP/ATP Transport by Ruprecht et al. (2019) Source.
Good video showing what appears to be the adenine nucleotide translocator. although they don't use that name, instead saying ADP/ATP carrier.
The video also briefly depicts the ATP synthase and the mitochondrial phosphate carrier protein.