polygalacturonate 4-alpha-galacturonosyltransferase activity
polygalacturonate 4-alpha-galacturonosyltransferase activity
UDP-D-galacturonate:1,4-alpha-poly-D-galacturonate 4-alpha-D-galacturonosyltransferase activity
udp-d-galacturonate:1,4-alpha-poly-d-galacturonate 4-alpha-d-galacturonosyltransferase activity