The effect of combining signal sequences with the N28 fragment on GFP production in Aspergillus oryzae

作者：Ogino Chiak; Matsuda Tetsuya; Okazaki Fumiyoshi; Tanaka Tsutomu; Kondo Akihiko^*

来源：Process Biochemistry, 2014, 49(7): 1078-1083.

DOI：10.1016/j.procbio.2014.03.025

• Aspergillus oryzae
• Protein secretion
• Signal sequence
• Taka-amylase A (TAA)
• Multiple signal sequences

Effective secretion of green fluorescent protein (GFP) was investigated by the screening signal sequences for GFP secretion in Aspergillus oryzae. GFP production in A. oryzae was evaluated using fusions with signal sequences from Taka-amylase A (TAA), glucoamylase A, glucoamylase S, and triacylglycerol lipase. The TAA signal sequence promoted the highest protein secretion of GFP. Fusing this signal sequence with an N-terminal 28-amino acid region (N28 fragment) from the Rhizopus oryzae lipase signal sequence increased protein secretion. In addition, using multiple copies of this signal sequence, instead of the N28 fragment, also induced protein secretion. These results show that using multiple signal sequences or combining a signal sequence with the N28 fragment can be used to improve heterogeneous protein secretion in A. oryzae.

• 出版日期2014-7
• 单位RIKEN