SuperCos 1 is a novel, 7.9-kb cosmid vector that contains bacteriophage promoter sequences flanking a unique cloning site. This structure allows rapid synthesis of "walking" probes specific for the extreme ends of insert DNA. The SuperCos 1 vector is also engineered to contain genes for the amplification and expression of cosmid clones in eukaryotic cells.

• Cloning capacity of 30-42 kb
• For generating cosmid libraries
• Ideal for high-resolution restriction mapping and rapid chromosomal walking