The phrase "affinity to either" is correct and usable in written English.
It can be used when discussing a preference or attraction towards one of two options or choices.
Example: "She expressed an affinity to either of the proposed solutions, indicating that she was open to both ideas."
Alternatives: "preference for either" or "liking for either".
In comparative SPR assays, FGF18 has been shown to have highest affinity to either FGFR3c (Hoshikawa et al., 2002) or FGFR1c (Olsen et al., 2006).
There is one exception in that the peptide P2 (corresponding to the R2 region identified in the screenings using the mouse and human antisera, Figs. 4 and 5) showed no measurable affinity to either mouse or human antisera, suggesting that the R2 region might be less conformation-independent than the other four regions.
The phages with the highest binding affinity to either amorphous or crystalline Ni3B were evaluated by the method of a competitive binding assay.
In vertebrates, six specific proteins associate with telomeres having affinity to either single-stranded or double-stranded telomeric DNA and they are collectively called shelterin [ 1].
PFF0845c, a C-terminally truncated ATS variant (Supplemental Fig. S1 A), showed little affinity to either PFE1605w or PFI1780w (Fig. 1 B, C).
Nevertheless, the substrate specificity of this cathepsin group was similar to human cathepsin L. Cathepsins TmL7 and TmL8 predictably had no affinity to either of these substrates due to changes in glycines in the binding site of S1.
This structural plasticity of the BMP type I receptor epitope, which allows BMPR-IA to adapt to different binding partners without deteriorating binding affinities to either one of the partners is possibly a key mechanism by which proteins can achieve binding to more than one interaction partner utilizing the same binding site.
Finally, the WT-Merlin and S518D-Merlin share similar binding affinities to either EBP50-CT or Lats1-FBD.
A recent description of a Middle Eocene skeleton (Mayr 2011) of a stem parrot (Pan-Psittaciformes) fossil Messelastur gratulator (Messelasturidae) may support such an argument, though it was previously considered to have closer affinities to either falconiform or strigiform birds (Mayr 2005).
Recombinant protein purification is achieved by fusing appropriate affinity tags to either N- or C- terminus of the target recombinant proteins.
Both constructs showed only slight improvements in binding affinity compared to either individual aptamer.
