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1 g that wild-type L3 is required for ribosome depurination.
2 reamplification, probably via the process of depurination.
3 yl bond by DNA glycosylase or by spontaneous depurination.
4 ites were generated in DNA by partial acidic depurination.
5 ciently protected against 4-OH-E(1)-mediated depurination.
6 rates recruitment of RTA to the ribosome for depurination.
7 7 underwent glycolysis, followed by complete depurination.
8 ude faster than that of random "spontaneous" depurination.
9 r mutations other than those attributable to depurination.
10 d cytotoxicity without altering the ribosome depurination ability.
11                                              Depurination activity also occurs on stem-loop DNA with
12 ues were used to quantitatively describe PAP depurination activity and PAP-VPg interactions.
13               Further reduction in toxicity, depurination activity and ribosome binding was observed
14 rg176 are more important than Arg179 for the depurination activity and toxicity of Stx1A1 and Stx2A1.
15      A self-catalyzed, site-specific guanine-depurination activity has been found to occur in short g
16      The R235A mutation reduced toxicity and depurination activity more than any other single arginin
17    Mutation of a single arginine reduced the depurination activity of Stx1A1 more than that of Stx2A1
18 faster than would be expected by spontaneous depurination alone, suggesting that there may be residua
19 nce in the absence of ribosome binding, rRNA depurination and acidic PR protein production.
20 ification can yield important information on depurination and base oxidation.
21 ified the amino acids important for ribosome depurination and cytotoxicity of PAP.
22 nct from the sequences required for ribosome depurination and cytotoxicity.
23 Methylation protection and interference, and depurination and depyrimidation interference provided a
24 ommon DNA lesions resulting from spontaneous depurination and excision of damaged nucleobases by DNA
25                           We have found that depurination and prenicking at positions around the -10
26                     We report the effects of depurination and prenicking at various positions of the
27 esidue at position 70 (N70A) delays ribosome depurination and the onset of translation arrest.
28 ediated cell death, indicating that ribosome depurination and translation inhibition do not account e
29  mechanism that occurs independently of rRNA depurination and translation.
30 as a minor nonspecific effect on the rate of depurination, and a major specific effect on the rate of
31            To elucidate the mechanism of RNA depurination, and to understand how PAP recognizes and t
32                            Since nicking and depurination are known to destabilize DNA helical struct
33                                    An acidic depurination assay was developed that allowed the contro
34                      Using novel array based depurination assays, we show that the depurination side
35 atography in combination with yeast ribosome depurination assays.
36  10(5)-fold faster than random "spontaneous" depurination at pH 5.
37              In addition, we have found that depurination at several positions inhibited open complex
38 t are not directly involved in the catalytic depurination at the active site exhibit >150-fold reduce
39 ard acid-catalyzed and glycosylase-catalyzed depurination by 2'-fluorination and toward base-catalyze
40 binding stimulates the catalysis of ribosome depurination by orienting the active site of RTA toward
41 d cleavage og the RNA by alpha-sacrin, where depurination by ricin A-chain was little affected.
42 67 pair), reduced cleavage by sarcin whereas depurination by ricin was slightly increased.
43 reased cleavage by sarcin but did not affect depurination by ricin.
44 7.1 to 73.9 nm, making it more vulnerable to depurination by RIPs.
45 binding stimulates the catalysis of ribosome depurination by RTA.
46  least two arginines was necessary to reduce depurination by Stx2A1 to a level similar to that of Stx
47                      We also demonstrate how depurination can be controlled and reduced by a novel de
48 ntly among primates, thereby conferring self-depurination capacity at codon 6.
49 bind to apurinic sites formed by spontaneous depurination, chemical attack, or other glycosylases.
50 -infected flies show a strong signal of rRNA depurination consistent with RIP-dependent modification
51  of Sulfolobus solfataricus likely undergoes depurination/depyrimidination frequently in vivo.
52 asic sites that arise in DNA from hydrolytic depurination/depyrimidination of the nitrogenous bases f
53 , as measured by the reduction of human rRNA depurination detected by our novel TaqMan-based RT-qPCR
54 enerated in nucleic acids due to spontaneous depurination, DNA damage or base excision of mismatched
55   In order to understand the implications of depurination during DNA synthesis, the detritylation kin
56 d trimer oligonucleotides were used to study depurination during the chemical synthesis of oligonucle
57              Premethylation interference and depurination experiments with the car and argF operators
58                                     Ribosome depurination gradually decreased upon the sequential del
59                                              Depurination half-times obtained for dichloroacetic acid
60 genomes, occurring with higher frequency at "depurination hot spots." Recently, we discovered a site-
61 ogues are more susceptible to acid-catalyzed depurination illustrating that the enzyme-catalyzed mech
62 ation of the catalytic intermediate for self-depurination in double-stranded DNA requires a stem-loop
63 obtaining maximum detritylation with minimum depurination in oligonucleotide synthesis.
64               We quantify the extent of rRNA depurination in vivo using a novel primer extension assa
65                   Techniques that avoid acid depurination including in-gel hybridizations and UV irra
66                           Self-catalyzed DNA depurination is a sequence-specific physiological mechan
67                [Chemical reaction: See text] Depurination is an important degradation pathway for ant
68   These results indicate that self-catalyzed depurination is not unique to single-stranded DNA; rathe
69 y and show that the temporal pattern of rRNA depurination is similar to the pattern of PAP mRNA desta
70 ir requirement at the base of the loop: self-depurination is suppressed by 5'-C.G-3', 5'-A.T-3', or a
71 des and report on the susceptibility of X to depurination, its miscoding potential during replication
72 be only slightly less stable than guanine to depurination (k(X)/k(G) = 1.19), whereas at pH <or= 4 th
73                         Analysis of ribosome depurination kinetics demonstrated that Stx2A1 depurinat
74            The strong dependence of the self-depurination kinetics on stem stability suggests that th
75                        The variation in self-depurination kinetics with sequence changes in the loop
76            Self-catalyzed stem-loop-mediated depurination leading to flexible apurinic sites may ther
77 dy, evidence is presented for self-catalyzed depurination mediated by cruciform formation in plasmid
78 RTA) and saporin-L1 (SAP) catalyze adenosine depurination of 28S rRNA to inhibit protein synthesis an
79 w that recombinant Spiroplasma RIP catalyzes depurination of 28S rRNAs in a cell-free assay, as well
80            Ricin A-chain (RTA) catalyzes the depurination of a single adenine at position 4324 of 28S
81  ribosomal inactivating activity arises from depurination of a single adenine from position A(4324) i
82 eir protein synthesis-inhibitory activity by depurination of a single adenine residue from the 28S rR
83 ) from castor beans catalyzes the hydrolytic depurination of a single base from a GAGA tetraloop of e
84                                    Catalytic depurination of a specific adenine has been proposed to
85 Ricin A-chain (RTA) catalyzes the hydrolytic depurination of a specific adenosine at position 4324 of
86 ) has, for many years, been considered to be depurination of a specific adenyl residue of ribosomal R
87           The deletions had no effect on the depurination of A4324 by ricin nor on the cleavage of th
88 Toxin A-chain (RTA) catalyzes the hydrolytic depurination of A4324, the first adenosine of the GAGA t
89 ARP-slot-blot assay, the rate of spontaneous depurination of calf thymus DNA was determined.
90  near the active-site pocket is required for depurination of cytosolic ribosomes but not for cap bind
91       It is based on specific acid-catalyzed depurination of DNA followed by mass spectrometric quant
92  DNA enzyme that catalyzes the site-specific depurination of DNA with a catalytic rate enhancement of
93 us sequence for self-catalyzed site-specific depurination of G residues is explored.
94 nough to fix the loop structure required for depurination of its 5'-G residue.
95 ting proteins (RIPs) catalyze the hydrolytic depurination of one or more adenosine residues from euka
96 lso play a critical role in the PAP-mediated depurination of ribosomal RNA.
97    Further, VPg is a potent inhibitor of PAP depurination of RNA in wheat germ lysate and competes wi
98                                      In vivo depurination of rRNA was detected in transgenic tobacco
99 ng the same active site that is required for depurination of rRNA.
100 used to establish the kinetic parameters for depurination of short RNA, DNA, and RNA-DNA hybrids of G
101             The consensus sequences for self-depurination of such G- and A-loop residues occur in all
102 d activity assay that detects ricin mediated depurination of synthetic substrates was improved throug
103             Our previous studies showed that depurination of the 28S rRNA by ricin results in the inh
104 The observations suggest that self-catalyzed depurination of the 5' G residue of the loop consensus s
105 a stem-loop structure that can self-catalyze depurination of the 5'G residue of that codon.
106 he spectra, it appears that the slow rate of depurination of the N7Gua adducts during active repair m
107                                              Depurination of the ribosomal sarcin-ricin tetraloop (GA
108                    The aptamer inhibited RTA depurination of the SRL and could partially protect tran
109  showed that ribosomal stalk is required for depurination of the SRL by ricin toxin A chain (RTA).
110 n binding of PAP to ribosomes and subsequent depurination of the SRL.
111                                              Depurination of the substrate by ricin was confirmed by
112  an ribosome-inactivating protein and allows depurination of the target adenine.
113  explored the acid-catalyzed (non-enzymatic) depurination of these substrates, which appears to follo
114 C terminus is also required for toxicity and depurination of tobacco ribosomes in vivo, but not for a
115 or antiviral activity, toxicity, and in vivo depurination of tobacco ribosomes.
116                                              Depurination of yeast 26S rRNA by ME1 and ME2 demonstrat
117  N-glycosidase activity as manifested by the depurination of yeast rRNA.
118 mmon DNA lesions that arise from spontaneous depurination or by base excision repair (BER) of modifie
119  plasmid or genomic calf thymus DNA via mild depurination or by simple incubation at physiological co
120 B1-N7-dG adduct undergoes either spontaneous depurination or imidazole-ring opening yielding formamid
121  a 1-h incubation and eliminates artifactual depurination or loss of AP sites during DNA isolation.
122  Stx2 have similar requirements for ribosome depurination, PAP has different requirements, providing
123 g to an elution solvent designed to minimise depurination (PCR buffer) facilitates the elution of int
124 lkylation by alkyltransferase-S-CH2CH2Br and depurination, plus another as yet uncharacterized system
125          In addition to the "n-x" sequences, depurination products, and incompletely deprotected olig
126 (k(X)/k(G) = 1.19), whereas at pH <or= 4 the depurination rate exceeded that of G by more than an ord
127                                              Depurination rates vary widely across genomes, occurring
128                                          The depurination reaction activates the ribotoxic stress res
129 O)2 effectively hinders any redox cycling or depurination reaction of CGenQ with DNA.
130                                          The depurination reaction of guanosine, protonated or modifi
131                  Protonation accelerates the depurination reaction whereas N7-platination, the initia
132 kbone cleavage by a mechanism similar to the depurination reactions employed in the chemical degradat
133 )) and pH-independent (1.4 x 10(-8) x s(-1)) depurination reactions for dX as well as the dissociatio
134        Chemical mechanisms for enzymatic RNA depurination reactions include leaving group activation,
135 f redox cycling or directly damaging DNA via depurination reactions.
136  based depurination assays, we show that the depurination side reaction is the limiting factor for th
137  10-base RNA stem-loop with adenosine at the depurination site (2.2 microM).
138 9-yl)-1,4-dideoxy-1,4-imino-D-ribitol at the depurination site binds four times better (0.57 microM)
139  with 1,4-dideoxy-1,4-imino-D-ribitol at the depurination site binds with a K(d) of 1.3 microM and im
140 roxymethyl)-3-hydroxytetrahydrofuran] at the depurination site binds with a Kd of 3.2 microM and tigh
141  (N-Bn) transition state analogue at the RTA depurination site in a circular GAGA motif.
142 D-ribitol moiety, a 4-azasugar mimic, at the depurination site in the tetraloop of a 14mer oligonucle
143 Stem-loop RNA with phenyliminoribitol at the depurination site increases the affinity substantially (
144 oop RNA with p-nitrophenyl O-riboside at the depurination site is not a substrate, but binds tightly
145 xymethyl)pyrrolidine was incorporated at the depurination site of a 14-base RNA stem-loop, the Kd was
146      Introduction of a deoxyadenosine at the depurination site of short RNA oligonucleotides restores
147 poration of the C-riboside formycin A at the depurination site provides an increased pKa of the adeni
148 ficity studies, the 2'-hydroxyl group at the depurination site seems to be critical for recruitment a
149  with a deoxyguanosine on the 5'-side of the depurination site was also synthesized on the basis of s
150           Replacing the adenosine of the RTA depurination site with deoxyadenosine in a small RNA ste
151 e specificities of RTA for the two adenylate depurination sites in a RNA substrate with a GAGA tetral
152 duplexes, suggesting misrepair at A-specific depurination sites.
153  suffer from greater rates of acid-catalyzed depurination than dG and are sensitive to the acidic deb
154 cleoside is more resistant to acid-catalyzed depurination than previously described 8-bromo-2'-deoxya
155 adducts, not the abasic sites resulting from depurination, that are responsible for the stimulation o
156             Since Gs are especially prone to depurination through a spontaneous hydrolysis of the gly
157 er expulsion of F- ion (lethal event) or (b) depurination to form Ade and hexose-derived 6-carboxyl f
158 es (CEQs) modify DNA by redox cycling and/or depurination via a Michael addition.
159                               Self-catalyzed depurination was contingent on the plasmid being superco
160 n internal thymidine standard not subject to depurination was monitored by reverse phase HPLC analysi
161                                     Ribosome depurination was reduced when RTA was expressed in the D
162 ct indicated that some of the adducts led to depurination with the release of the Gly136-Arg147 pepti

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