Research Article

Cloning and Expression of Synthetic Genes Encoding the Broad Antimicrobial Spectrum Bacteriocins SRCAM 602, OR-7, E-760, and L-1077, by Recombinant Pichia pastoris

Table 2

Primers and PCR products used in this study.

Primers, PCR products, or bacteriocinsNucleotide sequence (5′-3′) or description Amplifications

Primers
 S602-FGCCATGAGCTCGAATTCTCGAGAAAAGR-SRCAM602, R-E760, R-L1077
 S071-FGTCCAGAGCTCGAATTCTCGAGAAAAGR-SRCAM 602, R-E760, R-L1077, R-OR7
 SARP-RAGGTACCATAAGTTGCGGCCGCR-OR7
 ALFA-FTACTATTGCCAGCATTGCTGCpPICZαA amplification fragment including the cloned synthetic gene
 3AOX1-RGCAAATGGCATTCTGACATCCpPICZαA amplification fragment including the cloned synthetic gene
PCR products
 R-SRCAM602136-bp XhoI/NotI fragment containing the α-factor Kex2 signal cleavage fused to the mature synthetic srcam602 gene with the P. pastoris codon usage
 R-OR7181-bp XhoI/NotI fragment containing the α-factor Kex2 signal cleavage fused to the mature synthetic or-7 gene with the P. pastoris codon usage
 R-E760242-bp XhoI/NotI fragment containing the α-factor Kex2 signal cleavage fused to the mature synthetic e-760 gene with the P. pastoris codon usage
 R-L1077167-bp XhoI/NotI fragment containing the α-factor Kex2 signal cleavage fused to the mature synthetic l-1077 gene with the P. pastoris codon usage
Bacteriocins
 BacSRCAM602 (amino acid sequence)ATYYGNGLYCNKQKHYTWVDWNKASR 
EIGKITVNGWVQH
 BacSRCAM602 (P. pastoris codon usage)gctacttactacggtaacggtctttactgtaacaagcagaagcact 
acacttgggttgactggaacaaggcttccagagagatcggtaag 
atcactgttaacggttgggttcaaca
 BacOR-7 (amino acid sequence)KTYYGTNGVHCTKNSLWGKVRLKNMK 
YDQNTTYMGRLQDILLGWATGAFGKTFH
 BacOR-7 (P. pastoris codon usage)aagacttactacggaactaacggtgttcactgtactaagaattcctt 
gtggggtaaggttagattgaagaacatgaagtacgaccagaaca 
ctacttacatgggtagattgcaggacatcttgttgggttgggctact 
ggtgctttcggtaagacttttcat
 BacE-760 (amino acid sequence)NRWYCNSAAGGVGGAAVCGLAGYVGE 
AKENIAGEVRKGWGMAGGFTHNKACKS 
FPGSGWASG
 BacE-760 (P. pastoris codon usage)aacagatggtactgtaactccgctgctggtggtgttggtggtgct 
gctgtttgtggtttggctggttatgttggtgaggctaaagaaaacat 
tgctggtgaggttagaaagggttggggtatggctggtggtttcac 
tcataacaaggcttgtaagtccttcccaggttctggttgggcttctggt
 BacL-1077 (amino acid sequence)TNYGNGVGVPDAIMAGIIKLIFIFNIRQGY 
NFGKKAT
 BacL-1077 (P. pastoris codon usage)actaactacggtaacggtgttggtgttccagacgctattatggctg 
gtatcatcaagttgatcttcatcttcaacatcagacagggttacaac 
ttcggtaagaaggctact