PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10605949-2 1999 We examined the effect of vWF on kinetic parameters for interaction between LCh and HCh in the presence of Ca2+ and Mn2+ ions, the most effective mediators of fVIII reconstitution from isolated subunits, and determined the minimal structural portion of vWF able to enhance fVIII formation. alpha-hexachlorocyclohexane 84-87 von Willebrand factor Homo sapiens 26-29 10605949-3 1999 We found that affinity (Kd) for LCh/HCh binding mediated by Ca2+ and Mn2+ was 91 and 34.9 nM in the absence of vWF and 15.5 and 5.6 nM in its presence. alpha-hexachlorocyclohexane 36-39 von Willebrand factor Homo sapiens 111-114 10605949-5 1999 The value of the dissociation rate constant (k(off)) for LCh/HCh complex was lower in the presence of Mn2+ (k(off) 4.6x 10(-6) s(-1)) than Ca2+ (k(off) 8.4 x 10(-6) s(-1)) but in both cases vWF had no effect on k(off). alpha-hexachlorocyclohexane 61-64 von Willebrand factor Homo sapiens 190-193 10605949-9 1999 Only vWF large proteolytic N-terminal homodimeric fragment SPIII (vWF residues 1-1365), but not small monomeric N-terminal fragment SPIII-T4 (1-272), both of which are known to contain a major fVIII binding site, was able to support reconstitution of fVIII activity from isolated LCh and HCh subunits in the presence of Mn2+ or Ca2+. alpha-hexachlorocyclohexane 288-291 von Willebrand factor Homo sapiens 5-8 10480230-6 1999 The finding that Kd of LCh binding to vWf (3.8 nM) is 9.5 times higher than that of fVIII (0.4 nM), indicates that the heavy chain (HCh) is required for the maximal affinity of fVIII for vWf. alpha-hexachlorocyclohexane 132-135 von Willebrand factor Homo sapiens 38-41 10480230-6 1999 The finding that Kd of LCh binding to vWf (3.8 nM) is 9.5 times higher than that of fVIII (0.4 nM), indicates that the heavy chain (HCh) is required for the maximal affinity of fVIII for vWf. alpha-hexachlorocyclohexane 132-135 von Willebrand factor Homo sapiens 187-190