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Enzymatic Assays 351 Fig. 5. Characterization of the CaM kinase II/caldesmon preparation. Caldesmon containing CaM kinase II was incubated at 30°C for 10 min with [γ- 32 P]ATP under the indicated conditions. Reactions were stopped by addition of an equal volume of SDS gel sample buffer (20 µL) and boiling. Samples were subjected to SDS-PAGE and autoradiography. CBB: Coomassie Blue-stained SDS gels of M r markers (M) and the CaM kinase II/caldesmon preparation (K). ARG: autoradiograph showing the Ca 2+ - and CaMdependence of caldesmon phosphorylation and inhibition by the CaM kinase II inhibitor peptide, [Ala9]autocamtide 2 (10 µM). Where present, [CaM] was 1 µM. [CaM] per assay, it is recommended that at least one identical [CaM] point be included in each assay. This provides a check for internal consistency. For the noncontinuous assays, linearity must be determined by stopping the reaction at various points in time and quantifying product formation or substrate loss. The time over which the reaction is linear depends on the concentration of enzyme and substrate used and must be verified before selecting a suitable time (on the linear portion of the curve relating product formation (or substrate loss) and time).
352 Walsh et al. Fig. 6. CaM-dependent activation of CaM kinase II. CaM kinase II activity was measured at the indicated concentrations of bovine brain CaM. Values represent the mean ± SEM (n = 4, each done in triplicate). Maximal activity corresponds to 0.7 nmol P i incorporated/min.mg caldesmon substrate. For CaM inhibition assays, we first add CaM, then inhibitor and finally start the reaction by addition of the enzyme. In the continuous assays, CaM inhibitors can be added after the reaction has been started as shown in Figs. 2 and 3. If this is done, it is important that the reaction rate is linear for a sufficient period of time to allow disruption of the active CaM-enzyme complex. 3. If these assays are being used to study the CaM-dependent activation of enzymes, it is essential that the purified target enzymes contain minimal amounts of CaM. If this is not the case, the basal activity will be high before addition of CaM and this basal rate can be inhibited by the addition of CaM inhibitors or Ca 2+ chelators such as EGTA. Removal of CaM is not currently possible for inducible NOS. 4.2. NOS Assays 4. NOS activities are optimal at pH 7.5 and 37°C and are very pH and temperature sensitive. These parameters must be held constant during a reaction. 5. The amount of NOS used depends on its purity. Typically, CaM produces maximal activation at a 1:1 molar ratio. By using lower [NOS] the reaction will remain linear for a longer time. Because all the NOS assays described here require soluble enzyme, if eNOS is used it must first be solubilized. 6. SOD and catalase are included in the oxyhemoglobin assay to prevent superoxide (formed by uncoupled NADPH oxidation) from reacting with NO, and to prevent H 2O 2 (formed by SOD) from converting HbO 2 to metHb and other higher oxidation states, respectively. 7. It is possible to conduct the NADPH oxidation assay in the presence of an exogenous electron acceptor such as cyt c. In the presence of cyt c, NADPH oxidation is no longer dependent on a functional oxygenase domain in NOS. NADPH oxi-
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Methods in Molecular BiologyTM Biol
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M E T H O D S I N M O L E C U L A R
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© 2002 Humana Press Inc. 999 River
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Preface Calcium plays an important
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Contents Dedication ...............
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Contents xi 26 Enzymatic Assays to
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xiv Contents of Companion Volume 15
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xvi Contributors LESLIE D. HICKS
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20 Dean, Kelsey, and Re
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2 Yazawa
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4 Yazawa Fig. 1. Schematic represen
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6 Yazawa Fig. 2. Shop drawing for t
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8 Yazawa DuPont-NEN and the molar c
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10 Yazawa Fig. 4. Examples of the C
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12 Yazawa 5. Plot the calculated Ca
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14 Yazawa 12. Starovasnik, M. A., D
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16 Fig. 1. Molecular structures and
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18 Linse 7. 0.1 M EDTA. Dissolve 37
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20 Linse iterate the other paramete
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22 Linse tive to small alterations
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24 Linse References 1. Tsien, R. Y.
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26 Haiech and Kilhoffer to use the
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28 Haiech and Kilhoffer where γ is
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30 Haiech and Kilhoffer reporter gr
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32 Haiech and Kilhoffer tein with i
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34 Haiech and Kilhoffer Calmodulin
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36 Haiech and Kilhoffer Fig. 3. Mec
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38 Haiech and Kilhoffer We may sugg
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40 Haiech and Kilhoffer 29. Stewart
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42 Haiech and Kilhoffer 62. Becking
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44 Martin and Bayley Fig. 1. Absorp
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46 Martin and Bayley evaporation. C
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48 Martin and Bayley 4. Set the tem
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50 Martin and Bayley Fig. 2. Near-U
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52 Martin and Bayley discussed by M
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54 Martin and Bayley References 1.
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20 Dean, Kelsey, and Reik
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58 Fabian and Vogel are equipped wi
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60 Fabian and Vogel The penetration
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62 Fabian and Vogel perature, ionic
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64 Fabian and Vogel Fig. 3. IR spec
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66 Fabian and Vogel Fig. 4. Lower t
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68 Fabian and Vogel These correlati
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70 Fabian and Vogel Fig. 5. Amide I
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72 Fabian and Vogel 4. ATR-FTIR spe
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74 Fabian and Vogel 25. Georg, H.,
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76 Weljie and Vogel Fig. 1. Simplif
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78 Weljie and Vogel Fig. 3. Steady-
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80 Weljie and Vogel VIS spectrophot
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82 Weljie and Vogel 4. A series of
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84 Table 1 Advanced Fluorescence Me
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86 Weljie and Vogel References 1. L
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90 Johnson and Tikunova is removed
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92 Johnson and Tikunova function of
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94 Johnson and Tikunova Fig. 2. Rat
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96 Johnson and Tikunova Fig. 3. Rat
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98 Johnson and Tikunova Fig. 4. Ca
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100 Johnson and Tikunova cence inte
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102 Johnson and Tikunova 6. Johnson
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104 Julenius Fig. 1. Under conditio
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106 Julenius 3. Mix 50 µL of NHS s
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108 Julenius Fig. 3. A typical sens
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110 Julenius (2), is used in the Ia
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114 Lopez and Makhatadze Fig. 1. Th
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116 Lopez and Makhatadze 6. Buffers
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118 Lopez and Makhatadze The excess
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122 Lopez and Makhatadze Fig. 1. Is
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124 Lopez and Makhatadze 2.5 mL are
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126 Lopez and Makhatadze pendence o
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128 Hicks et al. equipped with a pu
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130 Hicks et al. Fig. 2. Debye plot
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132 Hicks et al. and 1.0 mg/mL for
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134 Hicks et al. Fig. 3. Sedimentat
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136 Hicks et al. 5. Hayes, D. B. (M
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138 Trewhella and Krueger This chap
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140 Trewhella and Krueger of the sc
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142 Trewhella and Krueger Table 1 C
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144 Trewhella and Krueger beam, or
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146 Trewhella and Krueger At very l
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148 Trewhella and Krueger analytica
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150 Trewhella and Krueger collapsed
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152 Trewhella and Krueger P(r) func
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154 Trewhella and Krueger Fig. 3. S
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156 Trewhella and Krueger concentra
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158 Trewhella and Krueger by a Nati
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162 Doherty-Kirby and Lajoie metal
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164 Doherty-Kirby and Lajoie two Ca
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166 Doherty-Kirby and Lajoie 7. Pep
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168 Doherty-Kirby and Lajoie Fig. 1
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170 Doherty-Kirby and Lajoie Fig. 2
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172 Doherty-Kirby and Lajoie 5. Alt
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174 Doherty-Kirby and Lajoie phosph
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176 Shaw Fig. 1. Ribbon drawing of
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178 Shaw 2.3. Other 1. Chemicals fo
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180 Shaw 3.3.3. Purification 1. Con
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182 Shaw 10. Hodges, R. S., Semchuk
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184 Brokx and Vogel Table 1 An Over
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186 Brokx and Vogel Fig. 1. UV abso
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188 Brokx and Vogel Fig. 2. 20% SDS
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190 Brokx and Vogel it through an a
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192 Brokx and Vogel 8. Weljie, A. M
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196 Berliner Fig. 1. Aqueous X-band
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198 Berliner in the Bruker instrume
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200 Berliner Fig. 3. ESR spectra of
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202 Berliner Fig. 5. Low-temperatur
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204 Berliner 14. Musci, G., Reed, G
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206 Clarke and Vogel cal calcium-bi
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208 Clarke and Vogel Fig. 1. 113 Cd
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214 Clarke and Vogel The linewidth
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218 Drakenberg sands, of Hertz broa
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220 Drakenberg 1. Bloch equations m
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222 Drakenberg Fig. 2. Measurement
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224 Drakenberg Fig. 3. (A) 43 Ca NM
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226 Drakenberg Fig. 5. 43 Ca NMR sp
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228 Drakenberg NMR at sub-mM concen
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230 Drakenberg 30. Shimizu, T., Hat
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232 Weljie and Heringa Table 1 Amin
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234 Weljie and Heringa Table 2 Webs
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236 Weljie and Heringa diction meth
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238 Weljie and Heringa these databa
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240 Weljie and Heringa lineages. Th
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242 Weljie and Heringa compared, an
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244 Weljie and Heringa sequences as
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246 Weljie and Heringa much larger
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248 Weljie and Heringa ment require
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250 Weljie and Heringa 10. Kawasaki
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252 Weljie and Heringa 44. Thompson
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254 Weljie and Heringa
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256 Li et al. In order for these ex
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258 Li et al. 7. Mineral Mixture (s
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260 Li et al. 3. When the 45% D 2O/
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262 Li et al. sion system works eff
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264 Li et al. reliably produce high
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268 Mal et al. NMR data, X-PLOR (11
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270 Mal et al. Table 1 Simulated An
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272 Mal et al. 3.1.2.1. AMBIGUOUS D
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274 Mal et al. molecular dynamics a
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276 Mal et al. Assuming a rigid bod
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278 Mal et al. assign (segid A and
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280 Mal et al. References 1. Drenth
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282 Mal et al. 33. Jeener, J., Meie
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286 Werner et al. Our research has
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288 Fig. 1. (A) T 1, T 2 and the he
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290 Werner et al. tion, using gradi
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292 Werner et al. Fig. 3. (A) Rotat
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294 Werner et al. Fig. 4. (A) Line-
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296 Werner et al. Table 2 Models of
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298 Werner et al. 9. Reinhardt, D.
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Page 321 and 322: 302 Boyd et al. utilize residual di
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Page 329 and 330: 310 Boyd et al. total and NOE energ
Page 331 and 332: 312 Boyd et al. 2. When studying mu
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Page 335 and 336: 316 Boyd et al. 35. Schulte-Herbrug
Page 337 and 338: 318 Yap et al. image representation
Page 339 and 340: 320 Yap et al. modified EF-hand is
Page 341 and 342: 322 Table 1 Angle and Distance Outp
Page 343 and 344: 324 Yap et al. 2. Ikura, M. (1995)
Page 345 and 346: 326 Kobayashi that S-100A1 and S-10
Page 347 and 348: 328 Kobayashi 3.2. Coupling of Crom
Page 349 and 350: 330 Kobayashi Fig. 2. Tricine/SDS/P
Page 351 and 352: 332 Kobayashi 0.1% TFA at a flow ra
Page 353 and 354: 334 Kobayashi Both recombinant S-10
Page 355 and 356: 336 Kobayashi Fig. 6. Affinity chro
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Page 359 and 360: 340 Walsh et al. verts CaM from an
Page 361 and 362: 342 Walsh et al. 11. Bovine serum a
Page 363 and 364: 344 Walsh et al. Fig. 1. CaM-depend
Page 365 and 366: 346 Walsh et al. Fig. 3. CaM-depend
Page 367 and 368: 348 Walsh et al. 3.5. NOS Reduction
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Page 375 and 376: 356 Hughes et al. The electroporati
Page 377 and 378: 358 Hughes et al. 4. 1 M Na 2CO 3.
Page 379 and 380: 360 Hughes et al. range, repeat ste
Page 381 and 382: 362 Hughes et al. Table 1 Examples
Page 383 and 384: 20 Dean, Kelsey, and Reik
Page 385 and 386: 366 Persechini of the different CaM
Page 387 and 388: 368 Persechini Fig. 1. Schematic re
Page 389 and 390: 370 Persechini 2. 1 L of Terrific b
Page 391 and 392: 372 Persechini Fig. 4. Titration wi
Page 393 and 394: 374 Persechini Table 1 Parameters f
Page 395 and 396: 376 Persechini Fig. 6. The [Ca 2+ -
Page 397 and 398: 378 Persechini determined if the di
Page 399 and 400: 380 Persechini relatively insensiti
Page 401 and 402: 382 Persechini 18. Chafouleas, J. G
Page 403 and 404: 384 Török et al. actions in the c
Page 405 and 406: 386 Török et al. 3. The reaction
Page 407 and 408: 388 Török et al. Fig. 2. Electros
Page 409 and 410: 390 Török et al. Fig. 3. Peptides
Page 411 and 412: 392 Török et al. Table 1 Peptide
Page 413 and 414: 394 Török et al. Fig. 7. Nanospra
Page 415 and 416: 396 Török et al. Fig. 9. Nanospra
Page 417 and 418: 398 Török et al. Fig. 11. Electro
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402 Török et al. Fig. 14. Localiz
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404 Török et al. Fig. 16. Indicat
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406 Török et al. the significantl
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408 Török et al.
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410 Index substitutes, see Fluoresc
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412 Index Stern-Volmer plot, 78, 81
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414 Index Phenothiazines, see Calmo
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