Primers for fusion of protein A and ompA and alpha or omega part of beta-lactamase were designed:
alphaL+link14+homo CAGTGGTGGAAGCGGTGGC GGAGGATCTGGAGGAGGTGGTTCTGGAGGTGGAGGT CACCCAGAAACGCTGGTGAAAG alphaP+STOP+XbaI+BamHI GG GGATCC GG TCTAGA TTA TTCGCCAGTTAATAGTTTGCG omegaL+link14+homo CAGTGGTGGAAGCGGTGGC GGAGGATCTGGAGGAGGTGGTTCTGGAGGTGGAGGT CTACTTACTCTAGCTTCCCGG omegaP+STOP+EcoRI+PstI+BamHI AAGGATCCAACTGCAGAAGAATTC TTACCAATGCTTAATCAGTG OmpAL+NdeI CATATGAAAGCTACTAAACTGGTACTGGG OmpAP+link8+SacI+NotI+homo GCCACCGCTTCCACCACT GCGGCCGC CA GAGCTC CCTCCTCCAGAACCTCC GCCGTTGTCCGGACGAGTGCCGATG