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char = .;code = 46
result sql = Metabolic engineering of Saccharomyces cerevisiae for astaxanthin production and oxidative stress tolerance.
Metabolic engineering of Saccharomyces cerevisiae for astaxanthin production and oxidative stress tolerance.
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char = o;code = 111
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = c;code = 99
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = s;code = 115
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = f;code = 102
char = a;code = 97
char = r;code = 114
char = n;code = 110
char = e;code = 101
char = s;code = 115
char = y;code = 121
char = l;code = 108
char = ;code = 32
char = p;code = 112
char = y;code = 121
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = o;code = 111
char = s;code = 115
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = G;code = 71
char = G;code = 71
char = P;code = 80
char = P;code = 80
char = .;code = 46
char = ;code = 32
char = I;code = 73
char = n;code = 110
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = X;code = 88
char = .;code = 46
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = n;code = 110
char = d;code = 100
char = r;code = 114
char = o;code = 111
char = r;code = 114
char = h;code = 104
char = o;code = 111
char = u;code = 117
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = r;code = 114
char = t;code = 116
char = S;code = 83
char = ;code = 32
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = o;code = 111
char = d;code = 100
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = a;code = 97
char = x;code = 120
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = h;code = 104
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = s;code = 115
char = y;code = 121
char = n;code = 110
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = s;code = 115
char = u;code = 117
char = m;code = 109
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = y;code = 121
char = t;code = 116
char = o;code = 111
char = c;code = 99
char = h;code = 104
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = e;code = 101
char = ;code = 32
char = P;code = 80
char = 4;code = 52
char = 5;code = 53
char = 0;code = 48
char = ;code = 32
char = e;code = 101
char = n;code = 110
char = z;code = 122
char = y;code = 121
char = m;code = 109
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = d;code = 100
char = ;code = 32
char = n;code = 110
char = o;code = 111
char = t;code = 116
char = ;code = 32
char = l;code = 108
char = e;code = 101
char = a;code = 97
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = a;code = 97
char = x;code = 120
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = h;code = 104
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = .;code = 46
char = ;code = 32
char = H;code = 72
char = o;code = 111
char = w;code = 119
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = ,;code = 44
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = e;code = 101
char = x;code = 120
char = p;code = 112
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = s;code = 115
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = C;code = 67
char = r;code = 114
char = t;code = 116
char = S;code = 83
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = X;code = 88
char = .;code = 46
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = n;code = 110
char = d;code = 100
char = r;code = 114
char = o;code = 111
char = r;code = 114
char = h;code = 104
char = o;code = 111
char = u;code = 117
char = s;code = 115
char = ;code = 32
char = C;code = 67
char = r;code = 114
char = t;code = 116
char = R;code = 82
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = c;code = 99
char = y;code = 121
char = t;code = 116
char = o;code = 111
char = c;code = 99
char = h;code = 104
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = e;code = 101
char = ;code = 32
char = P;code = 80
char = 4;code = 52
char = 5;code = 53
char = 0;code = 48
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = t;code = 116
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = u;code = 117
char = l;code = 108
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = c;code = 99
char = u;code = 117
char = m;code = 109
char = u;code = 117
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = s;code = 115
char = m;code = 109
char = a;code = 97
char = l;code = 108
char = l;code = 108
char = ;code = 32
char = a;code = 97
char = m;code = 109
char = o;code = 111
char = u;code = 117
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = a;code = 97
char = x;code = 120
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = h;code = 104
char = i;code = 105
char = n;code = 110
char = .;code = 46
char = ;code = 32
char = I;code = 73
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = d;code = 100
char = d;code = 100
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ,;code = 44
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = t;code = 116
char = a;code = 97
char = -;code = 45
char = c;code = 99
char = a;code = 97
char = r;code = 114
char = o;code = 111
char = t;code = 116
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = -;code = 45
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = y;code = 121
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = n;code = 110
char = s;code = 115
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = m;code = 109
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = b;code = 98
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = r;code = 114
char = t;code = 116
char = W;code = 87
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = c;code = 99
char = r;code = 114
char = t;code = 116
char = Z;code = 90
char = ,;code = 44
char = ;code = 32
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = o;code = 111
char = d;code = 100
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = t;code = 116
char = a;code = 97
char = -;code = 45
char = c;code = 99
char = a;code = 97
char = r;code = 114
char = o;code = 111
char = t;code = 116
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = ;code = 32
char = k;code = 107
char = e;code = 101
char = t;code = 116
char = o;code = 111
char = l;code = 108
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = h;code = 104
char = y;code = 121
char = d;code = 100
char = r;code = 114
char = o;code = 111
char = x;code = 120
char = y;code = 121
char = l;code = 108
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = y;code = 121
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = s;code = 115
char = o;code = 111
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = c;code = 99
char = u;code = 117
char = m;code = 109
char = u;code = 117
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = a;code = 97
char = x;code = 120
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = h;code = 104
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = m;code = 109
char = e;code = 101
char = d;code = 100
char = i;code = 105
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = e;code = 101
char = c;code = 99
char = h;code = 104
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = n;code = 110
char = o;code = 111
char = n;code = 110
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = x;code = 120
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = h;code = 104
char = i;code = 105
char = n;code = 110
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = z;code = 122
char = e;code = 101
char = a;code = 97
char = x;code = 120
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = h;code = 104
char = i;code = 105
char = n;code = 110
char = .;code = 46
char = ;code = 32
char = I;code = 73
char = n;code = 110
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = l;code = 108
char = y;code = 121
char = ,;code = 44
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = u;code = 117
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = k;code = 107
char = e;code = 101
char = t;code = 116
char = o;code = 111
char = c;code = 99
char = a;code = 97
char = r;code = 114
char = o;code = 111
char = t;code = 116
char = e;code = 101
char = n;code = 110
char = o;code = 111
char = i;code = 105
char = d;code = 100
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = f;code = 102
char = e;code = 101
char = r;code = 114
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = d;code = 100
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = s;code = 115
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = l;code = 108
char = e;code = 101
char = r;code = 114
char = a;code = 97
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = S;code = 83
char = .;code = 46
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = v;code = 118
char = i;code = 105
char = s;code = 115
char = i;code = 105
char = a;code = 97
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = a;code = 97
char = b;code = 98
char = o;code = 111
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = e;code = 101
char = n;code = 110
char = g;code = 103
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = h;code = 104
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = t;code = 116
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = i;code = 105
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = o;code = 111
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = a;code = 97
char = x;code = 120
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = h;code = 104
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = b;code = 98
char = r;code = 114
char = e;code = 101
char = e;code = 101
char = d;code = 100
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = n;code = 110
char = o;code = 111
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = ;code = 32
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = d;code = 100
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = s;code = 115
char = -;code = 45
char = t;code = 116
char = o;code = 111
char = l;code = 108
char = e;code = 101
char = r;code = 114
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = y;code = 121
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = i;code = 105
char = n;code = 110
char = s;code = 115
char = .;code = 46
char = <;code = 60
char = b;code = 98
char = r;code = 114
char = /;code = 47
char = >;code = 62
result sql = The red carotenoid astaxanthin possesses higher antioxidant activity than other carotenoids and has great commercial potential for use in the aquaculture, pharmaceutical, and food industries. In this study, we produced astaxanthin in the budding yeast Saccharomyces cerevisiae by introducing the genes involved in astaxanthin biosynthesis of carotenogenic microorganisms. In particular, expression of genes of the red yeast Xanthophyllomyces dendrorhous encoding phytoene desaturase (crtI product) and bifunctional phytoene synthase/lycopene cyclase (crtYB product) resulted in the accumulation of a small amount of beta-carotene in S. cerevisiae. Overexpression of geranylgeranyl pyrophosphate (GGPP) synthase from S. cerevisiae (the BTS1 gene product) increased the intracellular beta-carotene levels due to the accelerated conversion of farnesyl pyrophosphate to GGPP. Introduction of the X. dendrorhous crtS gene, encoding astaxanthin synthase, assumed to be the cytochrome P450 enzyme, did not lead to astaxanthin production. However, coexpression of CrtS with X. dendrorhous CrtR, a cytochrome P450 reductase, resulted in the accumulation of a small amount of astaxanthin. In addition, the beta-carotene-producing yeast cells transformed by the bacterial genes crtW and crtZ, encoding beta-carotene ketolase and hydroxylase, respectively, also accumulated astaxanthin and its intermediates, echinenone, canthaxanthin, and zeaxanthin. Interestingly, we found that these ketocarotenoids conferred oxidative stress tolerance on S. cerevisiae cells. This metabolic engineering has potential for overproduction of astaxanthin and breeding of novel oxidative stress-tolerant yeast strains.

Publication: Appl. Environ. Microbiol. 2009 Nov ;75(22)::7205-11. :doi: 10.1128/AEM.01249-09.
Publication Date: 2009 Nov
Study Author(s): Ukibe, Ken;Hashida, Keisuke;Yoshida, Nobuyuki;Takagi, Hiroshi;
Institution: Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan.
Shortcut link to this study:
The red carotenoid astaxanthin possesses higher antioxidant activity than other carotenoids and has great commercial potential for use in the aquaculture, pharmaceutical, and food industries. In this study, we produced astaxanthin in the budding yeast Saccharomyces cerevisiae by introducing the genes involved in astaxanthin biosynthesis of carotenogenic microorganisms. In particular, expression of genes of the red yeast Xanthophyllomyces dendrorhous encoding phytoene desaturase (crtI product) and bifunctional phytoene synthase/lycopene cyclase (crtYB product) resulted in the accumulation of a small amount of beta-carotene in S. cerevisiae. Overexpression of geranylgeranyl pyrophosphate (GGPP) synthase from S. cerevisiae (the BTS1 gene product) increased the intracellular beta-carotene levels due to the accelerated conversion of farnesyl pyrophosphate to GGPP. Introduction of the X. dendrorhous crtS gene, encoding astaxanthin synthase, assumed to be the cytochrome P450 enzyme, did not lead to astaxanthin production. However, coexpression of CrtS with X. dendrorhous CrtR, a cytochrome P450 reductase, resulted in the accumulation of a small amount of astaxanthin. In addition, the beta-carotene-producing yeast cells transformed by the bacterial genes crtW and crtZ, encoding beta-carotene ketolase and hydroxylase, respectively, also accumulated astaxanthin and its intermediates, echinenone, canthaxanthin, and zeaxanthin. Interestingly, we found that these ketocarotenoids conferred oxidative stress tolerance on S. cerevisiae cells. This metabolic engineering has potential for overproduction of astaxanthin and breeding of novel oxidative stress-tolerant yeast strains.
PMID: 19801484

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