The induction of amino acid synthesis genes is largely dependent on
Gcn2. Relative mRNA levels from amino acid biosynthetic genes in wild-type
and gcn2 mutant were taken from microarray data in this study. Levels
are shown by logarithmic scale with the time course of 0 (white bar),
1 (gray bar), and 3 h (black bar) after 3AT treatment. The
amino acid biosynthetic genes in S. cerevisiae were defined in
(32). Amino acid enzymes were
identified by homology using YOGY
(48) and listed in the figure
as follows: row 1, his1; 2, his5; 3, his2;
4, his7; 5, his3; 6, his6; 7, his4;
8, gln1; 9, PB1E7.07; 10, C132.04c; 11,
C662.12c; 12, gst1; 13, gst2; 14, C17H9.13c;
15, pro1; 16, PYUG7.05; 17, C428.05c; 18,
C725.14; 19, arg3; 20, argx; 21, arg7; 22,
arg11; 23, C1271.14; 24, arg1; 25, arg5;
26, arg4; 27, map1; 28, lys3; 29, lys1;
30, lys2; 31, lys7; 32, C3B8.03; 33,
C31G5.04; 34, lys4; 35, aro1; 36, C1223.14;
37, P8A3.07c; 38, C24H6.10c; 39, C16E8.04c;
40, C569.07; 41, C1773.13; 42, C56E4.03;
43, trp3; 44, trp1; 45, trp4; 46, trp2;
47, C30D10.16; 48, C1494.04c; 49, C364.97;
50, C3H7.07c; 51, gly1; 52, cit1; 53,
C24C9.06c; 54, C1683.11c; 55, gcv1; 56, C13G6.06c;
57, P19A11.01; 58, dld1; 59, shm2; 60,
C24C9.12c; 61, C725.01; 62, C10F6.13c; 63, C119.10;
64, C1827.06c; 65, C19F5.04; 66, C776.03;
67, C4C3.03; 68, thrc; 69, C3H7.02; 70,
C869.05c; 71, C1739.06c; 72, C106.17c; 73, met6;
74, sua1; 75, met26; 76, C584.01c; 77,
met5; 78, met14; 79, met16; 80, C428.11;
81, tol1; 82, sam1; 83, C1677.03c; 84,
ilv1; 85, ilv3; 86, ilv5; 87, C14C8.04;
88, leu2; 89, leu1; 90, leu3; 91, eca39;
92, C582.08. In column a, the genes whose orthologs in
S. cerevisiae are defined as Gcn4 targets are shown in gray.
- indicates the gene for which insufficient data exist to assess Gcn4
dependence (32). Columns
b and c are based on the present studies using S.
pombe.In column b, gray indicates the genes whose expression in
wild-type S. pombe cells is induced after 3AT treatment (genes whose
expression in S. pombe wild type is induced more than 1.5-fold at 1
and/or 3 h after 3AT treatment). In column c, gray indicates the
genes whose induction is dependent on Gcn2 (genes that are induced in wild
type and whose average mRNA level at 1 and 3 h is higher in wild type than in
gcn2Δ>1.4-fold).