Shu?et?al. Biotechnology for Biofuels and Bioproducts (2022) 15:41 Biotechnology for Biofuels https://doi.org/10.1186/s13068-022-02144-8 and Bioproducts RESEARCH Open Access The pyruvate decarboxylase activity of?IpdC is?a?limitation for?isobutanol production by?Klebsiella pneumoniae Lin Shu1,4?, Jinjie Gu1,3,4?, Qinghui Wang1, Shaoqi Sun1, Youtian Cui3, Jason Fell3, Wai Shun Mak3, Justin B. Siegel3, Jiping Shi1, Gary J. Lye2, Frank Baganz2* and Jian Hao1,2,4* Abstract Backgrou...