The nucleic acid molecule 19, wherein said vector comprises at least one of an origin of {HEAD ~ replication}, a ribosomal binding site, {TAIL ~ a nucleic acid sequence} encoding a drug resistance enzyme, and nucleic acid sequences encoding secretion signals, periplasm or peroxisome localization signals, or signals useful for polypeptide purification 
The nucleic acid molecule 19 , wherein said vector comprises at least one of an origin of { HEAD ~ replication } , a ribosomal binding site , { TAIL ~ a nucleic acid sequence } encoding a drug resistance enzyme , and nucleic acid sequences encoding secretion signals , periplasm or peroxisome localization signals , or signals useful for polypeptide purification
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