α-Ketoglutarate-dependent oxidase (α-KGO):α-Ketoglutarate-dependent oxidases are a class of dioxygenases that rely on α-ketoglutarate and Fe²⁺, and they are extensively involved in numerous critical biochemical reactions within living organisms.

| enzyme | Item number | Specifications |
| Enzyme powder | ES-α-KGO-101~ ES-α-KGO-109 | 9 enzymes × 50 mg each, or other quantities |
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