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. 2008 Oct 10;3(10):e3383. doi: 10.1371/journal.pone.0003383

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Ludewig et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(A) Position and nature of the point mutations (in bold) in the new pop2 alleles. Both pop2-6 and pop2-7 have a G→A transition resulting in the amino acid substitution G271E and G312D, respectively. The codons that have been changed in the mutants are underlined. (B) Comparison of the GABA-T amino acid sequences of Arabidopsis pop2-6 and pop2-7 and of Sus scrofa (GenBank accession 1OHV_A). ‘*’ indicates residues that are identical, ‘:’ homologous and ‘.’ similar . The active site residues of the pig enzyme are in bold, the pyridoxal phosphate recognition site is underlined, the attachment site is in italics, and the mutated residues are underlined, in bold and italics.