| R04343 | [Fig] | UDP-D-galacturonate + (1,4-alpha-D-Galacturonosyl)n | <=> | UDP + (1,4-alpha-D-Galacturonosyl)n |
| R05191 | [Fig] | n UDP-D-galacturonate | <=> | n UDP + Pectin |
| R06072 | [Fig] | G10506(n) + G11110 | <=> | G10506(n+1) + G10619 |
| R06278 | [Fig] | n G11110 | <=> | n G10619 + G10591 |