The possibility of multiple side chain motions is physically plausible but further complicates the interpretation of Φ values.
The rotamer-based approach is tested here for the S1′ pocket of human collagenase-1 (MMP-1), which is known to undergo conformational changes in multiple side-chains upon binding of certain inhibitors.
The multiple side-chains of amino acids can also undergo chemical reactions.
Their thermal and solution properties were measured and compared with the polyester without multiple alkyl side chains.
The polyesters displayed better solubility in common solvents such as chlorinated solvents and THF but lower thermal stability than the polyester without multiple alkyl side chains.
The PEIs containing multiple alkyl side chains showed excellent drawability with much higher elongations but lower tensile strengths and moduli compared with the commercial PEI, Ultem® 1000.
A series of aromatic polyesters containing multiple alkyl side chains was prepared from the 2,2′-disubstituted-4,4′-dihydroxybiphenyl 2,2′-disubstituted-4,4′-dihydroxybiphenyl 2,2′-disubstituted-4,4′-dihydroxybiphenyl 2,2′-disubstituted-4,4′-dihydroxybiphenyld 4-(dimonomersino)pyridinium 4-toluenesulfonand as a catalyst at room temperature.
Two series of diamine monomers, i.e., 4-[3,4,5-tris n-alkan-1-yloxy benzyl]-3,5-diaminobenzoate and 2,2′-bis{4-[3,4,5-tris n-alkan-1-yloxy benzyl]-3,5-diaminobenzoatemines containing multiple alkyl side chains, were synthesized in which the length of the alkyl side chains was varied from 5 to 18 ethylene units.
Asphaltene, the major constitution of the residue fraction of crude petroleum is commonly known as poly-condensed aromatic molecules of 4 10 rings (Groenzin and Mullins 2000) with multiple alkyl side chains.
Others chemically modify the PNA backbone with multiple arginine side chains to gain entry [31].
The new map showed clear grooves in α-helices and multiple bulky side chains.
