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Table 1 Molecular sizes of poplar GS polypeptides (kDa)

From: Redundancy and metabolic function of the glutamine synthetase gene family in poplar

Polypeptide Genome(JGI) cDNA MS/MALDI
GS2 42.29 42.29 42.17
GS1.1 39.45 39.21 39.97
GS1.2 38.97 38.96 39.98
GS1.3 39.09 39.19 38.95