PMID- 24052228 OWN - NLM STAT- MEDLINE DCOM- 20140520 LR - 20211021 IS - 1476-5535 (Electronic) IS - 1367-5435 (Linking) VI - 40 IP - 12 DP - 2013 Dec TI - Cloning, expression of a feruloyl esterase from Aspergillus usamii E001 and its applicability in generating ferulic acid from wheat bran. PG - 1433-41 LID - 10.1007/s10295-013-1339-6 [doi] AB - A cDNA gene (AufaeA), which encodes a mature polypeptide of the type-A feruloyl esterase from Aspergillus usamii E001 (abbreviated to AuFaeA), was cloned and heterologously expressed in Pichia pastoris GS115. One transformant, labeled as P. pastoris GSFaeA4-8, expressing the highest recombinant AuFaeA (reAuFaeA) activity of 10.76 U/ml was selected by the flask expression test. The expressed reAuFaeA was purified to homogeneity with an apparent molecular weight of 36.0 kDa by SDS-PAGE analysis, and characterized using the model substrate of methyl ferulate (MFA). The purified reAuFaeA was optimally active at pH 5.0 and 45 degrees C, and highly stable at pH 4.0-6.5 and 45 degrees C or below. Its activity was not significantly affected by metal ions tested and EDTA. The K m and V max of reAuFaeA towards MFA were 4.64 mM and 115.5 U/mg, respectively. High-performance liquid chromatography analysis showed that only 9.7 % of total alkali-extractable ferulic acid (FA) was released from destarched wheat bran by reAuFaeA alone. The released FA increased to 36.5 % when reAuFaeA was used together with a recombinant Aspergillus usamii GH family 11 xylanase A, indicating a synergistic interaction between them. FAU - Gong, Yan-Yan AU - Gong YY AD - School of Pharmaceutical Science, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, Jiangsu, People's Republic of China. FAU - Yin, Xin AU - Yin X FAU - Zhang, Hui-Min AU - Zhang HM FAU - Wu, Min-Chen AU - Wu MC FAU - Tang, Cun-Duo AU - Tang CD FAU - Wang, Jun-Qing AU - Wang JQ FAU - Pang, Qing-Feng AU - Pang QF LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130920 PL - Germany TA - J Ind Microbiol Biotechnol JT - Journal of industrial microbiology & biotechnology JID - 9705544 RN - 0 (Coumaric Acids) RN - 0 (DNA, Complementary) RN - 0 (Dietary Fiber) RN - 0 (Fungal Proteins) RN - 0 (Recombinant Proteins) RN - AVM951ZWST (ferulic acid) RN - EC 3.1.1.- (Carboxylic Ester Hydrolases) RN - EC 3.1.1.73 (feruloyl esterase) RN - EC 3.2.1.8 (Endo-1,4-beta Xylanases) SB - IM MH - Amino Acid Sequence MH - Aspergillus/*enzymology/genetics MH - Carboxylic Ester Hydrolases/genetics/isolation & purification/*metabolism MH - Cloning, Molecular MH - Computational Biology MH - Coumaric Acids/*metabolism MH - DNA, Complementary/metabolism MH - Dietary Fiber/*metabolism MH - Electrophoresis, Polyacrylamide Gel MH - Endo-1,4-beta Xylanases/metabolism MH - Fungal Proteins/genetics/isolation & purification/*metabolism MH - Molecular Sequence Data MH - Molecular Weight MH - Pichia/enzymology/genetics MH - Polymerase Chain Reaction MH - Protein Conformation MH - Recombinant Proteins/genetics/metabolism MH - Sequence Homology, Amino Acid EDAT- 2013/09/21 06:00 MHDA- 2014/05/21 06:00 CRDT- 2013/09/21 06:00 PHST- 2013/05/25 00:00 [received] PHST- 2013/09/02 00:00 [accepted] PHST- 2013/09/21 06:00 [entrez] PHST- 2013/09/21 06:00 [pubmed] PHST- 2014/05/21 06:00 [medline] AID - 10.1007/s10295-013-1339-6 [doi] PST - ppublish SO - J Ind Microbiol Biotechnol. 2013 Dec;40(12):1433-41. doi: 10.1007/s10295-013-1339-6. Epub 2013 Sep 20.