Next, the C6″ primary hydroxyl of 1 was selectively reacted with succinic anhydride to introduce a terminal carboxyl function (compound 2) allowing the coupling with the N-terminal group of the fully protected and resin-anchored peptide (compound 3).
In a previous work, we developed a clickable boronic acid, 3- 2-azido-acetylamino phenylboronic acid (APBA) by introducing a terminal azide into commercially available 3- 2-azido-acetylamino phenylboronic
Both bare silica and SCCSN introduced a non-terminal dynamic rheology while they did not introduce additional mechanism responsible for origination of nonlinear steady flow except for macromolecular disentanglement of the PS matrix.
PCR primers introduced a C-terminal His6 tag for purification and the constructs were transfected into HEK293 cells.
We also introduced a C-terminal His-tag into the MsrA reporter gene, which together with Met-SO selection strategy outlined above, can be used for detection of MsrA-Sec and identification of factors that influence Sec incorporation.
For this, we introduced an N-terminal tag preceded by a Kozak sequence, or a C-terminal tag followed by a Stop codon in the Stu1 and EcoRV sites, respectively, placed on either side of the cassette.
To create fluorescently-labeled intrabodies, humanized enhanced green fluorescent protein (EGFP) was PCR-amplified (without a start codon) using a complementary forward primer that introduced an N-terminal (Gly4Ser)4 flexible peptide repeat.
The PCR reaction with NM743 and NM744 (Table 1) primers introduced an N-terminal His6 tag followed by a Caspase 3 protease site to allow tag removal.
In addition, we introduced an N-terminal StrepTag [ 22] using the QuikChange® II protocol into one form of physnosa (A1) and its almost inactive mutant (A1LD) to allow the preparation of homogeneous, active proteins.
All N-terminal-tagged proteins with mCherry were created with a pFA6-based vector (Kind gift from David Breslow, University of California, San Francisco), carrying a URA3-TEF2 promoter-mCherry, and were integrated into the gene by one-step PCR-based homologous recombination, with appropriate primers that also introduced an N-terminal linker (GDGAGL) between the mCherry and the proteins.
