front-end enzyme confusion

[tRNA]

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acheiver says

Feedback inhibition – regulation of metabolic pathways via the threshold amount of end products accumulated to inhibit front-end enzymes

what's a front-end enzyme,? is it a special type of enzyme?? i can't find any info about it in wiki, or texts please help

 

[TarheelKid24]

I think it's just saying the enzymes that are at the beginning of the pathway (aka front-end).

 

[tRNA]

ok that make sense thankx