Journal: Journal of Fungi
Article Title: Comparison of CRISPR-MAD7 and CRISPR-Cas9 for Gene Disruptions in Komagataella phaffii
doi: 10.3390/jof10030197
Figure Lengend Snippet: Schematic representation of the CRISPR-MAD7 ( a ) and CRISPR-Cas9 ( b ) E. coli / K. phaffii shuttle vectors. Vector ( a ) encodes the gene for the expression of MAD7 (blue), whereas ( b ) encodes the genes for the expression of Cas9 (red). In both cases, the transcription is initiated by one side of the bidirectional, constitutive RNA polymerase II promotor HTX1 (P HTX1 ) and terminated by the DAS1 terminator ( DAS1 TT). Transcription of the sgRNA cassette (green) is initiated by the second side of the P HTX1 and terminated by the AOX1 terminator ( AOX1 TT). For selection purposes in E. coli and K. phaffii , a Zeocin resistance gene (Sh ble, purple) under the control of P ILV5 and P EM72 is used. For transient expression of the CRISPR elements in K. phaffii , the plasmids harbor an autonomously replicating sequence (PARS1, grey). For plasmid propagation during cloning procedures in E. coli , an origin of replication (pUC Ori, yellow) is encoded.
Article Snippet: Moreover, 44 CRISPR-MAD7 plasmids with specific gRNA coding sequences were ordered from Twist Bioscience (San Francisco, CA, USA).
Techniques: CRISPR, Plasmid Preparation, Expressing, Selection, Sequencing, Clone Assay