Small sequence differences between the two isoforms therefore mediate large differences in assembly capacity, even though these two related organelles have a common evolutionarily ancient architecture.
This inhibition was enhanced by low, but dampened by high, expression levels of L7A and L7B and differences were observed between the two isoforms.
However, detailed analysis of isoform-specific organelle localization and characterization is difficult due to the 93% amino acid identity between the two isoforms.
Moreover, a clearer picture emerges to explain how a handful of amino acid substitutions can give rise to subtle differences in ligand binding between the two isoforms.
Herein we describe our successful efforts in obtaining C-2 substituted imidazo-pyrrolopyridines with improved JAK1 selectivity relative to JAK2 by targeting an amino acid residue that differs between the two isoforms (JAK1: E966; JAK1: D939).
Expression of chimeras between the two isoforms of ankyrin suggests that the membrane-binding domain of ankyrin-G is critical for reducing the Ina-p of Nav1.6.
Furthermore, due to the high mRNA sequence similarities between the two isoforms, an elaborative experimental design is strongly recommended for such studies.
In the mature CLX, one base-pair substitution is responsible for a single glutamic acid to lysine replacement in the coding region of CLX-2, leading to the difference between the two isoforms.
In all other samples no significant differences between the two isoforms could be determined (Fig. 1).
No functional difference has been described between the two isoforms of MeCP2, MeCP2A and MeCP2B.
This could be due to the differences between the two isoforms in DNA binding zinc finger domains.
