6ITK:
reference: Enhanced succinic acid production by Mannheimia employing optimal malate dehydrogenase., Ahn JH, Seo H, Park W, Seok J, Lee JA, Kim WJ, Kim GB, Kim KJ, Lee SY, Nat Commun. 2020 Apr 23;11(1):1970. doi: 10.1038/s41467-020-15839-z. PMID: 32327663

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