Abstract:
Antibodies or fragments thereof having CDR regions replaced or fused with biologically active peptides are described. Flanking sequences may optionally be attached at one or both the carboxy-terminal and amino-terminal ends of the peptide in covalent association with adjacent framework regions. Compositions containing such antibodies or fragments thereof are useful in therapeutic and diagnostic modalities.
Abstract:
Nucleic acid sequences encoding at least a portion of a polypeptide are directly incorporated into a plasmid by DNA polymerization or reverse transcription of a nucleic acid template. In particularly preferred embodiments, nucleic acid sequences encoding at least a portion of an antibody are directly incorporated into a plasmid by reverse transcription of messenger RNA (mRNA).
Abstract:
This disclosure describes novel vectors capable or replication and expression of foreign genetic information in bacteria, such as, for example, cyanobacterium and E. coli. This disclosure also deals with the use of the vectors to introduce foreign genes into bacteria.
Abstract:
A phage genome is engineered to include a novel restriction site at one of two different positions. In a first embodiment, a restriction site is inserted into the phage genome between the end of gene IV and the MOS hairpin which serves as a phage packaging signal for newly synthesized single strands of phage DNA. In a second embodiment, a restriction site is inserted into the phage genome after the MOS hairpin and prior to the minus strand origin. Once the phage genome is modified to contain the new restriction site, the vector can be engineered to be a "88" vector by inserting at the new restriction site a nucleotide sequence encoding at least a functional domain of pVIII and at least a first cloning site for receiving a gene encoding a polypeptide to be displayed and, optionally a second cloning site for receiving to be displayed. In particularly useful embodiments, the novel vectors are engineered to produce phage particles that display antibodies.
Abstract:
Phagemid vectors incorporating dimerization domains are provided which allow efficient production of biologically active polypeptides that may require dimerization for their biological activity.
Abstract:
Templates that are engineered to contain a predetermined sequence and a hairpin structure are provided by a nested oligonucleotide extension reaction. The engineered template allows Single Primer Amplification (SPA) to amplify a target sequence within the engineered template. In particularly useful embodiments, the target sequences from the engineered templates are cloned into expression vehicles to provide a library a polypeptides or proteins, such as, for example, an antibody library.
Abstract:
This disclosure describes novel vectors capable or replication and expression of foreign genetic information in bacteria, such as, for example, cyanobacterium and E. coli. This disclosure also deals with the use of the vectors to introduce foreign genes into bacteria.