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1              The equilibrium constants K(1) (MgATP affinity) and K(2) (=k(2)/k(-2), ATP isomerization
2 impact upon many of the cell's more than 600 MgATP-dependent enzymes and every cellular system where
3 eotide conformation occurs transiently after MgATP binds to both NBDs with associated dimerization, a
4 verts 5-aminoimidazole ribonucleotide (AIR), MgATP, and bicarbonate into N(5)-CAIR, MgADP, and P(i).
5 bioassay, we show that equimolar MgCl(2) and MgATP solutions contain similar amounts of free Mg(2+),
6 g the fact that numeric values of Mg(2+) and MgATP concentrations necessary for complete inhibition a
7 tion and allosterically regulates Mg(2+) and MgATP(2-) binding.
8 ystals were grown in the presence of AIR and MgATP.
9               In contrast, both free ATP and MgATP(2-) robustly open the rapidly desensitizing P2X3 s
10 ndent enzyme, catalyzes the bicarbonate- and MgATP-dependent carboxylation of pyruvate to oxaloacetat
11 d MgADP regulation of the K(ATP) current and MgATP regulation of the L-type Ca(2+) current in an ioni
12 catalyzes the coenzyme A (CoA)-dependent and MgATP-dependent cleavage of citrate into oxaloacetate an
13 ar solution accelerated desensitization, and MgATP reactivated TRPM8 channels in excised patches in a
14 ate the inhibition of both electron flux and MgATP hydrolysis by CN-, but not that caused by azide.
15 Mo-nitrogenase, both total electron flux and MgATP hydrolysis with V-nitrogenase were inhibited.
16                Upon the addition of gp41 and MgATP, gp59 dissociates from the complex, and the DNA-bo
17 e with factor Xa and treatment with KNO3 and MgATP did not, however, lead to an increase in passive p
18 finity of the enzyme for ATP, magnesium, and MgATP.
19 west affinity from titrations with MgADP and MgATP are 25 and 37 microM, respectively.
20 gments, numerous reactions utilize MgGTP and MgATP, and Mg2+ also regulates several of the phototrans
21 tudies of RT in the presence of both NVP and MgATP indicate a strong negative cooperativity.
22 ubstrates fructose-6-phosphate (Fru-6-P) and MgATP.
23                     Binding of pentulose and MgATP to form the reactive ternary complex is strongly s
24 usoidal analysis while varying phosphate and MgATP concentrations in skinned Drosophila IFM fibers.
25 a summary of the roles of the Fe protein and MgATP hydrolysis, information on the roles of the two me
26 he concerted action of NifZ, Fe protein, and MgATP and that the action of NifZ is required before tha
27 nce of the HscA/HscB co-chaperone system and MgATP.
28 n), a catalytically inactive E2 (Ubc12), and MgATP.
29 .5 and 2.0 mum sarcomere lengths as pCa and [MgATP] varied.
30 ic regulators of K(ATP) channel activity are MgATP and MgADP.
31 flexural rigidity of the actin filaments at [MgATP] </= 0.1 mM and local bending of the filament fron
32 in, and minimally requires 16 magnesium ATP (MgATP), eight protons, and eight electrons.
33 quilibrium-ordered addition of Mg(2+) before MgATP.
34 s preferred in which D-xylulose binds before MgATP.
35  HPPK*MgAMPCPP, because MgAMPCPP is a better MgATP analogue for HPPK with respect to both binding aff
36 istent with an allosteric antagonism between MgATP in one active site and Fru-6-P in a second active
37     We investigated the interactions between MgATP, MgADP, and the sulphonylurea gliclazide with KATP
38  show that the microtubule-Eg5 complex binds MgATP tightly, followed by rapid ATP hydrolysis with a s
39 iation indicating that the myosin head binds MgATP more tightly in the order IIA (8.7 mM(-1)), IID (4
40 ucleotide-binding domains (NBDs), that binds MgATP tightly at stoichiometry of 1 mol/mol Pgp.
41                    Mutant E552A/E1197A bound MgATP and MgADP (1 mol/mol) with K(d) 9.2 and 92 microm,
42 ccluded conformation, with one tightly bound MgATP committed to hydrolysis.
43 thway progresses such that the tightly bound MgATP enters the transition state and is hydrolyzed.
44               The Fe protein, with two bound MgATP molecules, transfers one electron to the MoFe prot
45 2 receptor can be activated by free ATP, but MgATP(2-) promotes opening with very low efficacy.
46 that K(B) channels are strongly activated by MgATP (but not ATP(4)(-)) within the physiological range
47 ive to MgATP inhibition and not activated by MgATP.
48                        Channel activation by MgATP was not antagonized by either 1 mm AMP or 500 micr
49 otype, characterized by robust activation by MgATP(2-) and weak regulation by Mg(2+).
50 K(ATP) channel unitary conductance, block by MgATP and activation by MgADP, did not differ between th
51  the apparent substrate inhibition caused by MgATP binding is not seen in hybrid tetramers with only
52 block of wild-type channels was increased by MgATP, but this effect was smaller for ND channels; chan
53 n was found to be similar to that induced by MgATP in Escherichia coli F(1)-ATPase molecules.
54 nhances the allosteric inhibition induced by MgATP.
55            Channel activity was inhibited by MgATP (>50 microM) and activated by MgADP (200 microM).
56 ivity of the K(ATP) channel to inhibition by MgATP and this increases the whole-cell K(ATP) current.
57                   KATP channel inhibition by MgATP was enhanced in both homozygous (homE1506K) and he
58 ue to a reduced sensitivity to inhibition by MgATP.
59 l currents by reducing channel inhibition by MgATP.
60                                In all cases, MgATP is required.
61 d vesicles purified from the mutant catalyze MgATP-dependent [(3)H]MTX uptake at only 40% of the capa
62  assembly of the catalytically active ChlHID-MgATP complex.
63  AAA(+) proteins ChlI and ChlD, form a ChlID-MgATP complex.
64 d facing ATP-binding cassette configuration; MgATP reduces binding affinity via a shift to the outwar
65                                  Cytoplasmic MgATP, supplied by dialysis at millimolar concentrations
66 astolic quasi-cell-like solutions (cytosolic MgATP, pCa 7) with an EC(50) of 9.0 +/- 0.4 mM.
67 th load-independent than with load-dependent MgATP-induced detachment rate.
68 g and other vital cells via the differential MgATP/ADP-dependent stimulatory actions of their tissue-
69             Isotope partitioning of the dPFK:MgATP complex indicates a random addition of MgATP and F
70 ough which each catalytic site cycles during MgATP hydrolysis as low --> high --> medium --> low.
71 anism, for which both E-MgADP-FAK-tide and E-MgATP-P-FAK-tide dead-end complexes form.
72 teps following the formation of the binary E.MgATP and E.SO4(2-) complexes and preceding the release
73 xyanion dissociation constants of dead end E.MgATP.oxyanion complexes were all increased.
74 n.) Chlorate and perchlorate form dead-end E.MgATP.oxyanion complexes.
75  rate of release of MgATP from the central E:MgATP:F6P complex 4-fold faster than the net rate consta
76 e in the rate of release of MgATP from the E:MgATP:F6P complex, independent of the concentration of F
77 resence of two endogenous channel effectors, MgATP and reduced glutathione, using the planar lipid bi
78 synthetase from Escherichia coli with either MgATP or MgADP/P(i) bound in the active site cleft.
79  unliganded and binary complexes with either MgATP or pyridoxal to 2.1-, 2.6-, and 3.2-A resolutions,
80 ence stoichiometric HscA and HscB and excess MgATP.
81 ed in the presence of up to 60 muM of excess MgATP without nonspecific binding of MgATP to the myosin
82 gor myosin heads to thin filaments following MgATP depletion in the absence of Ca(2+) also changed th
83 ubunit, with widely differing affinities for MgATP or MgADP.
84 ied ABCB6 showed a high binding affinity for MgATP (Kd = 0.18 muM) and an ATPase activity with a Km o
85 tants showed a severely reduced affinity for MgATP at the high affinity site.
86 site of Pfk-2 by increasing its affinity for MgATP with no alteration in the conformation of residues
87 ed in detail, demonstrating low affinity for MgATP, a preference for Mg as a metal cofactor and ATP a
88    Additionally, the Michaelis constants for MgATP and sulfate (or molybdate), the dissociation const
89  a more than 2-fold increase in the kcat for MgATP hydrolysis.
90 r APS (at saturating MgATP) and the K(m) for MgATP (at [APS](opt)) were 4.2 microM and 0.14 mM, respe
91 viscosity effect observed on k(cat)/K(m) for MgATP but not on k(cat)/K(m) for FAK-tide.
92 enerating state by substitution of MgADP for MgATP in maximum contracting solutions resulted in the s
93 tif were removed showed a normal pattern for MgATP binding to the catalytic sites, with a clearly pre
94 ATP binding and equal dissociation rates for MgATP and MgADP.
95 e quite dynamic, many important residues for MgATP binding and phosphoryl transfer in the active site
96 f the actin filament paths suggest that for [MgATP] >/= 0.25 mM, the flexural rigidity of heavy merom
97 m oxaloacetate, the reverse reaction to form MgATP, the oxamate-induced decarboxylation of oxaloaceta
98 e accumulation of the metabolite Mg(2+) from MgATP hydrolysis is required to make dantrolene administ
99 r the formation of profilin-MgATP-actin from MgATP-actin.
100 yosin cross-bridges use chemical energy from MgATP hydrolysis to generate force and shortening in str
101 the biosynthesis of carbamoyl phosphate from MgATP, bicarbonate, and glutamine.
102  yeast guanylate kinase in the complexes GKy.MgATP, GKy.MgADP, and GKy.MgADP.[u-(13)C]GMP were determ
103                                      At high MgATP concentrations (>0.1 mM), the oligomer forms E(2)P
104                             Conversely, high MgATP concentrations reduced the gliclazide concentratio
105  establish that only molybdate, homocitrate, MgATP, and Fe protein are essential for FeMoco maturatio
106 perties of the binary substrate complex HPPK*MgATP be represented by those of HPPK*MgAMPCPP, because
107 g simulations of the apo-enzyme and the HPPK.MgATP complex.
108 rometry to monitor the effect of HscA, HscB, MgATP, and MgADP on the time course of cluster transfer
109 that at least three SUR1 must bind/hydrolyse MgATP to open the mutant K(ATP) channel.
110                  Binding of non-hydrolyzable MgATP analogs or ATP in the absence of Mg is sufficient
111 n vitro motility, and only slowly hydrolyzed MgATP.
112 basis, we present evidence for a hyperbolic [MgATP]-velocity relationship of heavy-meromyosin-propell
113                           As the hyperbolic [MgATP]-velocity relationship was not consistent with int
114 f protein)(-1), K(mA(MgATP)) = 0.15 mM, K(ia(MgATP)) = 1 mM, K(mB(sulfate)) = 0.16 mM, V(max,r) = 18.
115 imers can all cross-link MTs into bundles in MgATP.
116 n of Ca(2+) current during rapid increase in MgATP, and 4), demonstrates that decreased ATP/ADP ratio
117 r residues are not involved significantly in MgATP- or MgADP-binding or in interdomain communication
118 orylation were consistent with a decline in [MgATP](i) playing a prominent role in mediating inhibiti
119 s K(ATP) channels in two ways: by increasing MgATP activation and by decreasing ATP inhibition.
120 eal that XK has a weak substrate-independent MgATP-hydrolyzing activity, and phosphorylates several s
121      Neither domain significantly influenced MgATP affinity.
122                      AlFx and BeFx inhibited MgATP hydrolysis by specific trapping of nucleotides in
123  is actin, M is myosin, D is MgADP, and S is MgATP.
124 tic values k(cat) (0.052 +/- 0.001 s(-1)), K(MgATP) (1.2 +/- 0.1 microM), K(iMgATP) (1.3 +/- 0.2 micr
125 (cat)/K(FAK-tide), while k(cat) and k(cat)/K(MgATP) were both decreased linearly at increasing solven
126       The effect of Mg(2+) is limited to V/K(MgATP), and initial rate studies indicate an equilibrium
127  ktr by 51% despite the presence of 5 mmol/L MgATP.
128 esence--versus in the absence--of the ligand MgATP or the RNA poly(C).
129 ease in the initial rate was observed at low MgATP.
130                      This effect of lowered [MgATP] was qualitatively different from that seen when H
131 =10 mM MgATP and had a relatively high K(M) (MgATP) of approximately 1 mM.
132 +/- 5 nmol min(-1) (mg of protein)(-1), K(M)(MgATP) of 0.15 mM].
133 7 micromol min(-1) (mg of protein)(-1), K(mA(MgATP)) = 0.15 mM, K(ia(MgATP)) = 1 mM, K(mB(sulfate)) =
134 n with adenosine triphosphate and magnesium (MgATP) and trap both products in the crystal lattice, we
135                                At <10 microM MgATP, E(1)[ATP].Mg.(H(+)):E(2) is formed at a high-affi
136 that under hydrolysis conditions (millimolar MgATP), not only the dimer dissociation rate increases,
137 s was maximal at concentrations of >or=10 mM MgATP and had a relatively high K(M) (MgATP) of approxim
138 es as in inside-out patches exposed to 10 mm MgATP.
139 g ATP hydrolysis, even in the presence of mm MgATP, and that the dissociation occurs following each h
140 finity for [ATP](i) (67% reduction with 6 mm[MgATP](i)).
141 ngth, 2.5 microm) from rabbit psoas muscle; [MgATP] was 4.6 mM, pH 7.1 and ionic strength was 200 mM.
142 ength 2.5 microm) from rabbit psoas muscle; [MgATP] was 4.6 mm, pH 7.1, ionic strength 200 mm and tem
143 n hybrid tetramers with only a single native MgATP binding site, the proposed kinetic mechanism is no
144 g pure mouse MDR3 P-glycoprotein and natural MgATP and MgADP.
145 se), but unlike the case for Mo-nitrogenase, MgATP hydrolysis was also inhibited by CN-.
146 on to previous data showing a nonhyperbolic [MgATP]-velocity relationship when actin filaments are pr
147                            Neither MgADP nor MgATP-gamma-S could replace MgATP.
148          Remarkably, MgAMP and MgADP but not MgATP protected PFK-1 against inhibition by palmitoyl-Co
149  ATP inhibition, by enhancing the ability of MgATP to stimulate channel activity.
150 tituted with these mutants in the absence of MgATP(2-), the condition conducive to rigor cross-bridge
151                            In the absence of MgATP, gliclazide block was similar for wild-type channe
152 cs simulations in the presence or absence of MgATP.
153 y MgADP in either the presence or absence of MgATP.
154 d with CuCl(2) in the presence or absence of MgATP.
155 ve forms of ATP and found that the action of MgATP(2-) and ATP(4-) differs between subtypes of P2X re
156 ulted from an enhanced stimulatory action of MgATP.
157 MgATP complex indicates a random addition of MgATP and F6P at low Mg(2+), with the rate of release of
158 n be contrasted with the ordered addition of MgATP prior to F6P at high Mg(2+).
159                             With addition of MgATP, differences were significant at high levels of ac
160 98 s(-1)), an exceptionally weak affinity of MgATP for myosin (association constant, 0.2 mM(-1)), and
161 +) (but not Na(+)) increases the affinity of MgATP in a saturable fashion.
162           We observed synergistic binding of MgATP and kinase to the sensor, which was used to develo
163 e propose that upon initial loose binding of MgATP at two nucleotide-binding domains (NBDs), together
164 e, and R92 is dispensable for the binding of MgATP but plays a role in facilitating the binding of HP
165 lanine increases the K(d) for the binding of MgATP by a factor of 3, whereas the K(d) for HP increase
166                                   Binding of MgATP reduces the fraction of RT bound to NVP, as indica
167  excess MgATP without nonspecific binding of MgATP to the myosin.
168  protein and indicates that, upon binding of MgATP, the Fe protein undergoes a dramatic conformationa
169 dly accelerated the rate of tight binding of MgATP, whereas it did not effect the rate of dissociatio
170                  The association constant of MgATP to cross-bridges (K(1)) after reconstitution of Tm
171 actions, enhancing the stimulatory effect of MgATP (which is mediated via SUR1).
172  microm eosin, indicating that the effect of MgATP is due to interactions within the nucleotide-bindi
173                    The stimulatory effect of MgATP mediated by the regulatory sulphonylurea receptor
174 iclazide abolished the stimulatory effect of MgATP on all channels.
175 her reconstituted with Tn, and the effect of MgATP on the rate constants (K(1), K(2)) was studied.
176                                The effect of MgATP was inhibited by 3 structurally different compound
177 hosphatidylinositol abolished this effect of MgATP, suggesting that it activated TRPV1 by generating
178 activated at 20 degrees C and the effects of MgATP, phosphate (P, P(i)), and MgADP were studied on th
179 the Fe protein likely involves hydrolysis of MgATP and protein-protein interaction between the Fe pro
180  the Fe protein coupled to the hydrolysis of MgATP.
181     The model, implemented with inclusion of MgATP-independent detachment from the rigor state, as su
182 bition upon both [Mg(2+)](i), as an index of MgATP depletion, and channel activity in cell-attached p
183 P to Kir6.2 inhibits, whereas interaction of MgATP with SUR1 activates, K(ATP) channels.
184 in the binding energy or binding kinetics of MgATP.
185             We also speculate that a lack of MgATP due to damaged mitochondria accounts for the decre
186                 At likely cellular levels of MgATP (2.5 mM) and sulfate (0.4 mM), the overall endogen
187 cond order rate constant for methanolysis of MgATP) ranged between 10(12)- and 10(14)-fold.
188                                 Modelling of MgATP binding to XK and the accompanying conformational
189                                  Omission of MgATP from the intracellular solution accelerated desens
190 in in promoting the effective orientation of MgATP and sulfate at the active site.
191  is significantly reduced in the presence of MgATP and biotin.
192  site (aa 206-218) slowed in the presence of MgATP and increased in the presence of RNA.
193 rom ArsD to ArsA occurred in the presence of MgATP at 23 degrees C but not at 4 degrees C.
194 and the native Fe protein in the presence of MgATP can reversibly cycle between a regular cubane-type
195          Channel activity in the presence of MgATP reflects the balance between the stimulatory (at S
196 able states were apparent in the presence of MgATP revealing new insights into alternating access.
197 ructure of Pfk-2 obtained in the presence of MgATP shows a cation-binding site at the conserved posit
198 parations, were performed in the presence of MgATP using Cs+ as the charge carrier.
199  Crystallization of A-CAT in the presence of MgATP yielded structures with AMP or adenosine in the ca
200 INT bound was 2.6 nmol/mg in the presence of MgATP, Mg(2+), Mg-P(i), or Mg-vanadate with complete inh
201 se polypeptides associate in the presence of MgATP.
202 of interaction with actin in the presence of MgATP.
203 P at low Mg(2+), with the rate of release of MgATP from the central E:MgATP:F6P complex 4-fold faster
204 (2+) is a decrease in the rate of release of MgATP from the E:MgATP:F6P complex, independent of the c
205 rotein conformations that define the role of MgATP in nitrogenase catalysis.
206 om, showed strong temperature sensitivity of MgATP binding and equal dissociation rates for MgATP and
207  other mutants showed lower stoichiometry of MgATP and MgADP binding, in the order Ala > Gln > Asp >
208 ortant role in orienting the triphosphate of MgATP for catalysis.
209 sized that the profilin-induced weakening of MgATP binding by actin reduces the negative free energy
210 timulatory effect of the oxyanion sulfite on MgATP hydrolysis.
211 ed in the presence of MnAMPPNP and GalNAc or MgATP and GalNAc (which resulted in bound products in th
212 as observed in the absence of either HscB or MgATP, and cluster transfer was found to be an ATP-depen
213  SUR1 mutant that is insensitive to MgADP or MgATP activation.
214  of the introduced tryptophans with MgADP or MgATP revealed that both Mg-nucleotide complexes bind to
215  channel and provide evidence that MgADP (or MgATP hydrolysis), acting at the regulatory subunit of t
216 e kcat nor the KM values for fructose-6-P or MgATP.
217 l change upon binding of either pyridoxal or MgATP.
218 hat decrease affinity for Fru-6-P (R243E) or MgATP (F76A/R77D/R82A) allowing us to systematically sim
219 e presence of low concentrations of Fru-6-P, MgATP displays substrate inhibition.
220                    The effects of phosphate, MgATP, MgADP and Ca2+ were studied in Tm-reconstituted m
221 K(IR)6 channels from probands in physiologic MgATP.
222 ere not fully blocked, even at physiological MgATP concentrations (1 mmol/L).
223 of unblocked K(ATP) current at physiological MgATP concentrations correlates with the severity of the
224 was abolished by SUR1 mutations that prevent MgATP binding/hydrolysis.
225  energy change for the formation of profilin-MgATP-actin from MgATP-actin.
226 )] structures in the presence of Fe protein, MgATP, and dithionite.
227 f NifZ is required before that of Fe protein/MgATP, suggesting that NifZ may act as a chaperone that
228 ilitates the subsequent action of Fe protein/MgATP.
229 the opposite of those observed with reduced [MgATP].
230 a transient association between the reduced, MgATP-bound Fe protein and the MoFe protein and includes
231 either MgADP nor MgATP-gamma-S could replace MgATP.
232 n Akt1 and these peptide inhibitors requires MgATP.
233  The theoretical K(m) for APS (at saturating MgATP) and the K(m) for MgATP (at [APS](opt)) were 4.2 m
234 on by APS (K(I) of 47.9 microM at saturating MgATP).
235 he turnover rate of hydrolysis of saturating MgATP in the presence of saturating drug concentrations
236 iencies were observed during drug-stimulated MgATP hydrolysis, suggesting the presence of at least th
237         After the addition of stoichiometric MgATP to the alpha(3)(betaM(222)S/Y(345)W)(3)gamma subco
238 tants for the binding of the first substrate MgATP or its analogues.
239 otein and the binding of the first substrate MgATP, but is required for the assembling and sealing of
240  Similar experiments with the poor substrate MgATP leads to 0.9% labeling.
241 ed upon recognition of the correct subtrate, MgATP, in an enzyme-substrate ternary complex.
242 , we report that internal Mg(2+) rather than MgATP inhibits this current.
243 ctivity in excised patches ran down and that MgATP reactivated the channel.
244                  These data demonstrate that MgATP provides substrate for lipid kinases, allowing the
245 erences in the Fe protein and indicated that MgATP-bound Fe protein resembles the structure of the Fe
246 nels with diabetogenic receptors reveal that MgATP-dependent hyper-stimulation of mutant SUR can comp
247                The data further suggest that MgATP hydrolysis by the nucleotide-binding domains of SU
248                                          The MgATP- and MgADP-induced conformational changes in BchL
249                                          The MgATP-bound conformation of the Fe protein of nitrogenas
250                                          The MgATP-induced association was strongly inhibited by prio
251 tin-dependent carboxylases and catalyzes the MgATP-dependent carboxylation of biotin, using bicarbona
252 y for galactose metabolism by catalyzing the MgATP-dependent phosphorylation of the C-1 hydroxyl grou
253 minal tail, phosphorylation also exposes the MgATP-binding site on NBD1.
254 nd Mg(2+) in addition to the one forming the MgATP complex is required to bind to cdk5/p25 for its ca
255 ove the concentration needed to generate the MgATP chelate complex, a 15-fold increase in the initial
256  of the native nitrogenase Fe protein in the MgATP-bound state.
257 stance to fluoropyrimidines by mediating the MgATP-dependent transport of 5'-fluoro-2'-deoxyuridine m
258 cations that affects the conformation of the MgATP-binding pocket leading to enzyme activation has be
259 tates indicates that the conformation of the MgATP-bound state in solution does not resemble the stru
260 variant may be a conformational mimic of the MgATP-bound state of the native Fe protein largely on th
261                     We therefore studied the MgATP sensitivity of KCNJ11 mutant K(ATP) channels expre
262 no acid deletion recently suggested that the MgATP-bound state of the Fe protein may exist in a confo
263                 This site is adjacent to the MgATP allosteric binding site and is only observed in th
264  interface with flavodoxin compared with the MgATP-bound state.
265  of MRP7 is specifically associated with the MgATP-dependent transport of 17beta-estradiol-(17-beta-D
266 echanics experiments, accounts well for the [MgATP]-velocity relationship if nonlinear cross-bridge e
267                                         Thus MgATP is probably the principal nucleotide regulating ch
268  extent of increase in [Mg(2+)](i) (and thus MgATP depletion) in response to inhibition of oxidative
269                                        Thus, MgATP acts as a source of Mg(2+) rather than a source of
270 netics of thymosin beta4 (Tbeta4) binding to MgATP-actin monomers.
271 c mechanism to become random with respect to MgATP and F6P and with MgATP released from the central c
272 ant channels were 2.5-fold less sensitive to MgATP inhibition and not activated by MgATP.
273 ng SUR1-Y356C displayed lower sensitivity to MgATP (IC(50) = 24 and 95 micromol/l for wild-type and m
274 X receptors with differential sensitivity to MgATP(2-) and regulation by Mg(2+), and demonstrate that
275 pped single phosphorylation event similar to MgATP.
276 Fe-4S](1+) reduced state (Fe(red)) binds two MgATP and forms a complex with the MoFe protein, with su
277 ssociation, coupled to the hydrolysis of two MgATP.
278 nd ACS-AcsFCh complex remains inactive until MgATP is added, thereby converting inactive to active AC
279 o give fructose 1,6-bisphosphate (FBP) using MgATP as the phosphoryl donor.
280 nges in gj and Vj-gating were observed using MgATP or K2ATP in pipette solutions, which increases or
281 ern in an in vitro motility assay at varied [MgATP].
282 rate that acto.S237C undergoes slow and weak MgATP binding, which limits the rate of steady-state cat
283 d for activation of multisite catalysis when MgATP is the substrate.
284                                        When [MgATP] was reduced to </=0.1 mM, the actin filament path
285 enger, caused rapid desensitization, whereas MgATP, at concentrations that activate lipid kinases, pr
286 1) to DNA coated with gp32 and gp59, whereas MgATP induces gp32 and gp59 to dissociate, leaving gp41
287         Similarly, under conditions in which MgATP was saturating, Km(Cbl) = 4.1 microm, kcat = 0.06
288                                         With MgATP as the added ligand, 80% of bound nucleotide was i
289 required for the loading of gp45, along with MgATP, and also for the subsequent binding of polymerase
290 andom with respect to MgATP and F6P and with MgATP released from the central complex half as fast as
291 um or free ATP to HCV helicase competes with MgATP, the true fuel for helicase movements, and leads t
292 idic torsion angle was 30 +/- 5 degrees with MgATP and 28 +/- 5 degrees with MgADP.
293 orsion angle, chi, was 55 +/- 5 degrees with MgATP, and 47 +/- 5 degrees with MgADP, which compares w
294 lization of the ternary complex of HPPK with MgATP and 6-hydroxymethyl-7,8-dihydropterin (HP), and is
295 helical order is substantially improved with MgATP at low temperature or with MgADP or in the absence
296 human IRAK-4 preactivated by incubation with MgATP.
297 ing movement that enhances interactions with MgATP, explaining the observed synergism.
298 e we show that methylphosphonate reacts with MgATP to form alpha-D-ribose-1-methylphosphonate-5-triph
299 interaction of these conserved residues with MgATP is required to stabilize the occluded nucleotide c
300  torsion angles were 55 +/- 5 degrees (GKy x MgATP) and 49 +/- 5 degrees (GKy x MgADP).

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