A key event in STAT signaling is STAT binding to activated cell surface receptors and/or non-receptor tyrosine kinases.[ 18] Binding is required for STAT phosphorylation at the conserved tyrosine residue C-terminal of their SH2 domain (STAT5a: Tyr694; STAT5a: Tyr699).
The data indicate that having multiple K+ ions bound simultaneously is required for selective K+ conduction, and that a reduction in the number of bound K+ ions destroys the multi-ion selectivity mechanism utilized by K+ channels.
(1) RecA-activated DNA polymerase V (pol V Mut), is a DNA-dependent ATPase; (2) bound ATP is required for DNA synthesis; (3) pol V Mut function is regulated by ATP, with ATP required to bind primer/template (p/t) DNA and ATP hydrolysis triggering dissociation from the DNA.
Recent reports have indicated that transcription factor binding is preferentially conserved when a bound target gene is required for a transcriptional regulator's function [23].
Based upon these observations, we predict that the zinc bound to MT is required for the ability of MT to block copper-mediated Aβ1 40 aggregation.
The region between the HVR and the C-repeats comprises the B-repeat region, which binds Fg and is required for phagocytosis resistance, as determined ex vivo [3], [21], [22].
Further investigation revealed that a transport adaptor protein called Aplip1, which binds to RBP, is required for this movement.
Gyrase consists of two GyrA subunits (that contain the active site tyrosine residues that mediate DNA cleavage and ligation) and two GyrB subunits (that bind ATP, which is required for overall catalytic activity).
This protein binds cenH3 and is required for the assembly of the kinetochore complex that links centromeric chromatin to the microtubule (Moore and Roth, 2001; Oegema et al., 2001; Cheeseman et al., 2004; Carroll et al., 2010; Kato et al., 2013).
Cdc-6, which are regulated in response to mitogenic signals, binds PCNA and is required for initiation of DNA replication [ 34], was also repressed at both 12 and 24 hrs after NAC treatment, implying programs involving withdrawal of mitogenic factors as important mechanisms for NAC mediated inhibition of proliferation and increased differentiation in NHEK cells.
