ESCRT-0, containing proteins with multiple Ub-binding modules, is the primary sensor for ubiquitinated membrane proteins.
A measure that is often used to distinguish the different types of disordered binding modules is length; however, this is likely to stem primarily from the different methodology used for their detection.
Labour-saving aside, functional metagenomics is also powerful, because it holds the potential to discover enzymes whose sequences are hitherto unknown [ 16], an attribute that is particularly welcome in the light of the recent discovery that CAZy family 33 carbohydrate binding modules are actually oxidative enzymes that facilitate the action of glycoside hydrolases [ 17].
However, recent reports providing structural insight into the Nck1 and Nck2 SH2 domains indicate that both binding modules are more or less indistinguishable with respect to their binding specificities and both recognize the consensus motif pYDxV AYST x DEC) [ 22].
DiAlign TF, Release 3.1 revealed 13 homology regions between the two genes, however no common features in the distribution of transcription factor binding sites along the genes and transcription factor binding modules were revealed.
This landmark study demonstrated that coupled binding modules are indeed capable of recognizing histone PTM patterns, which dramatically increases the depth of information that can be administered on nucleosomes.
Interestingly, LMα1LG4-5 domares are not involved in improvement of diaphragm and heart muscle morphology, indicating that other sites of LMα1 chain (most likely integrin α7β1 binding modules) are responsible for functional replacement of LMα2 chain in these muscles.
These binding modules are termed short linear motifs or SLiMs.
Additionally, WWE domain(s) (a putative PAR binding module) is found at the N-terminus of PARP2 homologues in many non-mammalian metazoan representatives (e.g. in bird, frog and fish, Fig. 1A).
The SBM functionality was analysed through a starch adsorption assay, confirming that the binding module is functional.
The protein binding module is repressed in pN0 tumors and it is represented by several genes.
