homogalacturonan biosynthetic process
The chemical reactions and pathways resulting in the formation of the pectidic homogalacturonan, characterized by a backbone of (1->4)-linked alpha-D-GalpA residues that can be methyl-esterified at C-6 and carry acetyl groups on O-2 and O-3.
GO:0010394
homogalacturonan metabolic process
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GO:0052325
cell wall pectin biosynthetic process
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