3 Results 3.1 Structural analysis and protein sequence alignments reveal four highly conserved cysteine residues in Arabidopsis GSAAT A X-ray crystallographic structure of Arabidopsis GSAAT1 (GSAAT At ) has been reported at 1.25 A resolution ( Synechocystis GSAAT (GSAAT Syn ), GSAAT At forms an asymmetric dimer, which reflects the differential binding of its substrates pyridoxal 5-phosphate (PLP) and pyridoxamine 5-phosphate (PMP) as cofactors to the two subunits, respectively ( At precursor) is located close to the bound cofactor PLP, with which it forms a Schiff-base linkage ( GSAAT At has four conserved Cys residues, Cys138, Cys168, Cys190 (all present in the catalytic domain) and Cys396 (at the C-terminus)
Al-Sadi, R., Ye, D., Dokladny, K
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Why use Acetic acid for IGF1 and IGF1 LR3 only : 1 : Acetic acid will break down any fragments stuck in glass or smaller than you can see, by mixing the lyophilized IGF-1 with acetic acid, the IGF-1 molecules are efficiently detached from the glass and solubilized in the mixture
