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Figure 7 | BMC Plant Biology

Figure 7

From: Medicago truncatula contains a second gene encoding a plastid located glutamine synthetase exclusively expressed in developing seeds

Figure 7

Clustal X alignment of GS2a and GS2b deduced amino acid sequences. Residues fully conserved (*), highly conserved (:), poorly conserved (.) and not conserved (). The transit peptide is represented in gray and was predicted by analogy with the GS2 from pea [9]. Black boxes outline potential modified residues affecting GS2b activity. The black dots indicate two cysteine residues which are conserved in all plastid located isoenzymes [69]. I-IV-identifies the conserved segments between GS proteins defined by Eisenberg et al. [49].

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