2.4.1.43 polygalacturonate 4-alpha-galacturonosyltransferase; UDP galacturonate-polygalacturonate alpha-galacturonosyltransferase; uridine diphosphogalacturonate-polygalacturonate alpha-galacturonosyltransferase; UDP-D-galacturonate:1,4-alpha-poly-D-galactur • • •