A developmental process, independent of morphogenetic (shape) change, that is required for the ureter to attain its fully functional state. The ureter is a muscular tube that transports urine from the kidney to the urinary bladder or from the Malpighian tubule to the hindgut.
Source:
GOC:yaf,
GOC:mtg_kidney_jan10,
GOC:bf,
PMID:17881463