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. 2019 Sep 9;294(48):18435–18450. doi: 10.1074/jbc.RA119.008497

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© 2019 Zhang et al.

Published under exclusive license by The American Society for Biochemistry and Molecular Biology, Inc.

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Figure 7. — Generating a model of ACE3 for mediating cellulase production in T. reesei. ACE3 is essential for lactose metabolism. XYR1 is essential for xylose metabolism (11, 12). ACE3 can bind to the promoters of many cellulase genes to directly mediate cellulase production. ACE3 can bind to crt1 (19) and transcriptional factor genes such as xyr1 to indirectly regulate cellulase production. XYR1 can bind to the promoters of cellulase genes to form homodimers that are essential for cellulase production. Moreover, ACE3 interacts with XYR1, which illustrated that heterodimers of ACE3 and XYR1 were formed during cellulase gene expression in T. reesei.