We have previously established a minimalist approach to antibody engineering by using a phage-displayed framework to support complementarity determining region (CDR) diversity restricted to a binary code of tyrosine and serine.
The antigen-binding fragment Fab-YADS2 recognizes vascular endothelial growth factor (VEGF) and was derived from a library with chemical diversity restricted to only four amino acids (Tyr, Ser, Ala and Asp).
We describe complete methods for the design, construction, and application of simplified synthetic antibody libraries built on a single human framework with diversity restricted to four complementarity-determining regions and two amino acids (tyrosine and serine).
By combining a TCRβ transgene with a TCRα minilocus comprised of a single V and two J gene segments, we engineered a mouse line exhibiting ample but focused TCR diversity, restricted to CDR3α.
We analysed three examples, two of them are from black shales with an abundance, and diversity restricted benthic fauna: (1) The Indian Castle (Utica) Shale, (uppermost Orthograptus ruedemanni – Climagraptus pygmaeus Graptolite Zone), late Katian, New York comprises dark, laminated, slightly calcareous clay shales with abundant graptolites, and small inarticulates [23].
Clinical diversity restricted global MTC to separate routes of administration.
The fact that only mutational and/or epigenetic events are apparently involved in the diversification of secondary species, combined with human selection, have strongly reduced global genetic diversity, restricting opportunity for genetic advance.
In the case of MATH, the limited sequence diversity probably restricts the expressiveness of our results.
We predicted that the availability of optimal habitat (riffles) would promote genetic diversity and conversely that habitat fragmentation (anthropogenic structures) would decrease genetic diversity and restrict connectivity.
The majority of the haplotype diversity was restricted to the two short tetrapeptide repeat arrays in exon 1 and 2, respectively.
