1276
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Bartelt J, Csorna SE, Jain V, Marka S, Freyberger A, Gibaut D, Kinoshita K, Pomianowski P, Schrenk S, Cinabro D, Barish B, Chadha M, Chan S, Eigen G, Miller JS, O'Grady C, Schmidtler M, Urheim J, Weinstein AJ, Würthwein F, Asner DM, Athanas M, Bliss DW, Brower WS, Masek G, Paar HP, Gronberg J, Korte CM, Kutschke R, Menary S, Morrison RJ, Nakanishi S, Nelson HN, Nelson TK, Qiao C, Richman JD, Roberts D, Ryd A, Tajima H, Witherell MS, Balest R, Cho K, Ford WT, Lohner M, Park H, Rankin P, Roy J, Smith JG, Alexander JP, Bebek C, Berger BE, Berkelman K, Bloom K, Cassel DG, Cho HA, Coffman DM, Crowcroft DS, Dickson M, Drell PS, Dumas DJ, Ehrlich R, Elia R, Gaidarev P, Galik RS. First observation of the decay tau --->K- eta nu tau. PHYSICAL REVIEW LETTERS 1996; 76:4119-4123. [PMID: 10061206 DOI: 10.1103/physrevlett.76.4119] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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1277
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Park H, Wahl MI, Afar DE, Turck CW, Rawlings DJ, Tam C, Scharenberg AM, Kinet JP, Witte ON. Regulation of Btk function by a major autophosphorylation site within the SH3 domain. Immunity 1996; 4:515-25. [PMID: 8630736 DOI: 10.1016/s1074-7613(00)80417-3] [Citation(s) in RCA: 239] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Bruton's tyrosine kinase (Btk) plays a crucial role in B cell development. Overexpression of Btk with a Src family kinase increases tyrosine phosphorylation and catalytic activity of Btk. This occurs by transphosphorylation at Y551 in the Btk catalytic domain and the enhancement of Btk autophosphorylation at a second site. A gain-of-function mutant called Btk* containing E41 to K change within the pleckstrin homology domain induces fibroblast transformation. Btk* enhances the transphosphorylation of Y551 by endogenous Src family tyrosine kinases and autophosphorylation at the second site. We mapped the major Btk autophosphorylation site to Y223 within the SH3 domain. Mutation of Y223 to F blocks Btk autophosphorylation and dramatically potentiates the transforming activity of Btk* in fibroblasts. The location of Y223 in a potential ligand-binding pocket suggests that autophosphorylation regulates SH3-mediated signaling by Btk.
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1278
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Bowersock T, Hogenesch H, Suckow M, Porter R, Jackson R, Park H, Park K. Oral vaccination with alginate microsphere systems. J Control Release 1996. [DOI: 10.1016/0168-3659(95)00155-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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1279
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Gibaut D, Kinoshita K, Pomianowski P, Barish B, Chadha M, Chan S, Cowen DF, Eigen G, Miller JS, O'Grady C, Urheim J, Weinstein AJ, Würthwein F, Asner DM, Athanas M, Bliss DW, Brower WS, Masek G, Paar HP, Gronberg J, Korte CM, Kutschke R, Menary S, Morrison RJ, Nakanishi S, Nelson HN, Nelson TK, Qiao C, Richman JD, Roberts D, Ryd A, Tajima H, Witherell MS, Balest R, Cho K, Ford WT, Lohner M, Park H, Rankin P, Smith JG, Alexander JP, Bebek C, Berger BE, Berkelman K, Bloom K, Browder TE, Cassel DG, Cho HA, Coffman DM, Crowcroft DS, Dickson M, Drell PS, Dumas DJ, Ehrlich R, Elia R, Gaidarev P, Garcia-Sciveres M, Gittelman B, Gray SW, Hartill DL, Heltsley BK, Henderson S, Jones CD, Jones SL. Measurements of B-->Ds+X decays. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1996; 53:4734-4746. [PMID: 10020470 DOI: 10.1103/physrevd.53.4734] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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1280
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Freyberger A, Gibaut D, Kinoshita K, Pomianowski P, Schrenk S, Cinabro D, Barish B, Chadha M, Chan S, Eigen G, Miller JS, O'Grady C, Schmidtler M, Urheim J, Weinstein AJ, Würthwein F, Asner DM, Athanas M, Bliss DW, Brower WS, Masek G, Paar HP, Gronberg J, Korte CM, Kutschke R, Menary S, Morrison RJ, Nakanishi S, Nelson HN, Nelson TK, Qiao C, Richman JD, Roberts D, Ryd A, Tajima H, Witherell MS, Balest R, Cho K, Ford WT, Lohner M, Park H, Rankin P, Roy J, Smith JG, Alexander JP, Bebek C, Berger BE, Berkelman K, Bloom K, Cassel DG, Cho HA, Coffman DM, Crowcroft DS, Dickson M, Drell PS, Dumas DJ, Ehrlich R, Elia R, Gaidarev P, Gittelman B, Gray SW, Hartill DL, Heltsley BK, Jones CD. Limits on flavor changing neutral currents in D0 meson decays. PHYSICAL REVIEW LETTERS 1996; 76:3065-3069. [PMID: 10060867 DOI: 10.1103/physrevlett.76.3065] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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1281
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Lee YS, Lee YS, Park H. Synthesis and biological activity of C-3 direct heterocyclylcarbon-substituted novel cephalosporins. J Antibiot (Tokyo) 1996; 49:405-7. [PMID: 8642008 DOI: 10.7164/antibiotics.49.405] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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1282
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Park H, Vettese-Dadey M, Aronson NN. Glycosylation and phosphorylation of lysosomal glycosylasparaginase. Arch Biochem Biophys 1996; 328:73-7. [PMID: 8638940 DOI: 10.1006/abbi.1996.0144] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Glycosylasparaginase (EC 3.5.1.26) is a lysosomal amidase which hydrolyzes the bond between asparagine and the sugar moiety in N-linked glycoproteins. Deficiency of the enzyme results in aspartylglycosaminuria (AGU), the most common disorder of glycoprotein degradation. Mature enzyme is formed by two proteolytic cleavage steps subsequent to removal of its signal peptide: (1) an activation cleavage in the ER of the initial single-chain 49-kDa polypeptide into a 27-kDa alpha- and 19-kDa beta-subunit; (2) a cleavage in lysosomes which removes 10 amino acids from the C-terminus of the alpha-subunit without affecting enzyme activity. Each subunit of glycosylasparaginase contains one N-linked oligosaccharide (N38, alpha-subunit; N308, beta-subunit). Both oligosaccharides were phosphorylated and releasable by Endo-H digestion, indicating they were of the high-mannose type. These glycosylation sequenons were mutagenized to determine the role of the oligosaccharide at each site in proper folding and transport of glycosylasparaginase. An N38D mutant underwent the lysosomal processing step, indicating that targeting to lysosomes can be via the phosphorylated beta-subunit oligosaccharide alone. Deletion of the beta-subunit oligosaccharide oat N308 by an aspartic acid substitution resulted in very little protein or enzyme activity in the transfected cells, reemphasizing that glycosylation of the beta-subunit site is important for efficient folding and/or targeting. A different mutation to eliminate the same N-glycosylation sequenon (T310A) yielded more protein and enzyme activity, and a double mutant N38D/T310A yielded the same results as the single beta-subunit substitution. Yield of enzyme for all mutants was increased in cells treated with brefeldin A. The N308 glycosylation site of the beta-subunit appears to be more important in maintaining normal transport and stability of human glycosylasparaginase.
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1283
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Park H, Leahy DJ, Zare RN. Extensive electron-nuclear angular momentum exchange in vibrational autoionization of np and nf Rydberg states of NO. PHYSICAL REVIEW LETTERS 1996; 76:1591-1594. [PMID: 10060468 DOI: 10.1103/physrevlett.76.1591] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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1284
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Barish B, Chadha M, Chan S, Eigen G, Miller JS, O'Grady C, Urheim J, Weinstein AJ, Würthwein F, Asner DM, Athanas M, Bliss DW, Brower WS, Masek G, Paar HP, Gronberg J, Korte CM, Kutschke R, Menary S, Morrison RJ, Nakanishi S, Nelson HN, Nelson TK, Qiao C, Richman JD, Roberts D, Ryd A, Tajima H, Witherell MS, Balest R, Cho K, Ford WT, Lohner M, Park H, Rankin P, Smith JG, Alexander JP, Bebek C, Berger BE, Berkelman K, Bloom K, Browder TE, Cassel DG, Cho HA, Coffman DM, Crowcroft DS, Dickson M, Drell PS, Dumas DJ, Ehrlich R, Elia R, Gaidarev P, Gittelman B, Gray SW, Hartill DL, Heltsley BK, Henderson S, Jones CD, Jones SL, Kandaswamy J, Katayama N, Kim PC, Kreinick DL, Lee T. Measurement of the B semileptonic branching fraction with lepton tags. PHYSICAL REVIEW LETTERS 1996; 76:1570-1574. [PMID: 10060463 DOI: 10.1103/physrevlett.76.1570] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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1285
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Park H, Lee J, Lee JH, Chang JS. Selective photoionization of the ytterbium atom by coherent two-photon excitation. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 53:1751-1755. [PMID: 9913067 DOI: 10.1103/physreva.53.1751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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1286
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Rawlings DJ, Scharenberg AM, Park H, Wahl MI, Lin S, Kato RM, Fluckiger AC, Witte ON, Kinet JP. Activation of BTK by a phosphorylation mechanism initiated by SRC family kinases. Science 1996; 271:822-5. [PMID: 8629002 DOI: 10.1126/science.271.5250.822] [Citation(s) in RCA: 341] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Bruton's tyrosine kinase (BTK) is pivotal in B cell activation and development through its participation in the signaling pathways of multiple hematopoietic receptors. The mechanisms controlling BTK activation were studied here by examination of the biochemical consequences of an interaction between BTK and SRC family kinases. This interaction of BTK with SRC kinases transphosphorylated BTK on tyrosine at residue 551, which led to BTK activation. BTK then autophosphorylated at a second site. The same two sites were phosphorylated upon B cell antigen receptor cross-linking. The activated BTK was predominantly membrane-associated, which suggests that BTK integrates distinct receptor signals resulting in SRC kinase activation and BTK membrane targeting.
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1287
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Asner DM, Athanas M, Bliss DW, Brower WS, Masek G, Paar HP, Gronberg J, Korte CM, Kutschke R, Menary S, Morrison RJ, Nakanishi S, Nelson HN, Nelson TK, Qiao C, Richman JD, Roberts D, Ryd A, Tajima H, Witherell MS, Balest R, Cho K, Ford WT, Lohner M, Park H, Rankin P, Smith JG, Alexander JP, Bebek C, Berger BE, Berkelman K, Bloom K, Browder TE, Cassel DG, Cho HA, Coffman DM, Crowcroft DS, Dickson M, Drell PS, Dumas DJ, Ehrlich R, Elia R, Gaidarev P, Garcia-Sciveres M, Gittelman B, Gray SW, Hartill DL, Heltsley BK, Henderson S, Jones CD, Jones SL, Kandaswamy J, Katayama N, Kim PC, Kreinick DL, Lee T, Liu Y, Ludwig GS, Masui J, Mevissen J, Mistry NB, Ng CR, Nordberg E, Patterson JR. Search for exclusive charmless hadronic B decays. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1996; 53:1039-1050. [PMID: 10020097 DOI: 10.1103/physrevd.53.1039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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1288
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Park H, Rossiter M, Fensom AH, Winchester B, Aronson NN. Single base deletion in exon 7 of the glycosylasparaginase gene causes a mild form of aspartylglycosaminuria in a patient of Mauritian origin. J Inherit Metab Dis 1996; 19:76-83. [PMID: 8830180 DOI: 10.1007/bf01799351] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Aspartylglycosaminuria (AGU) is a lysosomal storage disorder of glycoprotein degradation caused by deficiency of glycosylasparaginase (GA). A deletion mutation was found in a mildly affected AGU patient whose parents are first-cousins of Mauritian origin. One bp deletion at position 787 or 788 (delta T788) in exon 7 of the GA gene resulted in a frameshift and produced an immediate stop codon. The resulting truncated polypeptide was defective in its post-translational proteolytic processing and remained as a single chain (36 kDa) with no GA activity.
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1289
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Kwon S, Park H. Reentrant phase diagram of branching annihilating random walks with one and two offspring. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1995; 52:5955-5960. [PMID: 9964110 DOI: 10.1103/physreve.52.5955] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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1290
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Balest R, Cho K, Ford WT, Lohner M, Park H, Rankin P, Smith JG, Alexander JP, Bebek C, Berger BE, Berkelman K, Bloom K, Browder TE, Cassel DG, Cho HA, Coffman DM, Crowcroft DS, Dickson M, Drell PS, Dumas DJ, Ehrlich R, Elia R, Gaidarev P, Garcia-Sciveres M, Gittelman B, Gray SW, Hartill DL, Heltsley BK, Henderson S, Jones CD, Jones SL, Kandaswamy J, Katayama N, Kim PC, Kreinick DL, Lee T, Liu Y, Ludwig GS, Masui J, Mevissen J, Mistry NB, Ng CR, Nordberg E, Patterson JR, Peterson D, Riley D, Soffer A, Avery P, Freyberger A, Lingel K, Prescott C, Rodriguez J, Yang S, Yelton J, Brandenburg G, Cinabro D, Liu T, Saulnier M, Wilson R, Yamamoto H, Bergfeld T, Eisenstein BI, Ernst J, Gladding GE. Measurements of the decays tau --->h-h+h- nu tau and tau --->h-h+h- pi 0 nu tau. PHYSICAL REVIEW LETTERS 1995; 75:3809-3813. [PMID: 10059737 DOI: 10.1103/physrevlett.75.3809] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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1291
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Synakowski EJ, Bell RE, Budny RV, Bush CE, Efthimion PC, Grek B, Johnson DW, Johnson LC, LeBlanc B, Park H, Ramsey AT, Taylor G. Measurements of the production and transport of helium ash in the TFTR tokamak. PHYSICAL REVIEW LETTERS 1995; 75:3689-3692. [PMID: 10059702 DOI: 10.1103/physrevlett.75.3689] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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1292
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Park H, Davis R, Wang TS. Studies of Schizosaccharomyces pombe DNA polymerase alpha at different stages of the cell cycle. Nucleic Acids Res 1995; 23:4337-44. [PMID: 7501454 PMCID: PMC307388 DOI: 10.1093/nar/23.21.4337] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The status of Schizosaccharomyces pombe (fission yeast) DNA polymerase alpha was investigated at different stages of the cell cycle. S.pombe DNA polymerase alpha is a phosphoprotein, with serine being the exclusive phosphoamino acid. By in vivo pulse labeling experiments DNA polymerase alpha was found to be phosphorylated to a 3-fold higher level in late S phase cells compared with cells in the G2 and M phases, but the steady-state level of phosphorylation did not vary significantly during the cell cycle. Tryptic phosphopeptide mapping demonstrated that the phosphorylation sites of DNA polymerase alpha from late S phase cells were not the same as that from G2/M phase cells. DNA polymerase alpha partially purified from G1/S cells had a different mobility in native gels from that from G2/M phase cells. The partially purified polymerase alpha from G1/S phase cells had a higher affinity for single-stranded DNA than that from G2/M phase cells. Despite the apparent differences in cell cycle-dependent phosphorylation, mobility in native gels and affinity for DNA, the in vitro enzymatic activity of the partially purified DNA polymerase alpha did not appear to vary during the cell cycle. The possible biological significance of these cell cycle-dependent characteristics of DNA polymerase alpha is discussed.
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1293
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Park H, Kim MH. Dynamic scaling behavior of an interacting monomer-dimer model. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1995; 52:5664-5666. [PMID: 9964066 DOI: 10.1103/physreve.52.5664] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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1294
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Gronberg J, Korte CM, Kutschke R, Menary S, Morrison RJ, Nakanishi S, Nelson HN, Nelson TK, Qiao C, Richman JD, Roberts D, Ryd A, Tajima H, Witherell MS, Balest R, Cho K, Ford WT, Lohner M, Park H, Rankin P, Smith JG, Alexander JP, Bebek C, Berger BE, Berkelman K, Bloom K, Browder TE, Cassel DG, Cho HA, Coffman DM, Crowcroft DS, Dickson M, Drell PS, Dumas DJ, Ehrlich R, Elia R, Gaidarev P, Garcia-Sciveres M, Gittelman B, Gray SW, Hartill DL, Heltsley BK, Henderson S, Jones CD, Jones SL, Kandaswamy J, Katayama N, Kim PC, Kreinick DL, Lee T, Liu Y, Ludwig GS, Masui J, Mevissen J, Mistry NB, Ng CR, Nordberg E, Patterson JR, Peterson D, Riley D, Soffer A, Avery P, Freyberger A, Lingel K. Observation of the isospin-violating decay Ds*+-->D+s pi 0. PHYSICAL REVIEW LETTERS 1995; 75:3232-3236. [PMID: 10059532 DOI: 10.1103/physrevlett.75.3232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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1295
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Park H, Ko MY, Paik MK, Soh CT, Seo JH, Im KI. Cytotoxicity of a cysteine proteinase of adult Clonorchis sinensis. THE KOREAN JOURNAL OF PARASITOLOGY 1995; 33:211-8. [PMID: 8528628 DOI: 10.3347/kjp.1995.33.3.211] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
To clarify the correlation of the proteinase activity with pathogenicity of Clonorchis sinensis, the proteinase activity either in excretory-secretory products (ESP) or in crude extracts of adult C. sinensis was examined. Substrate gel electrophoresis of the ESP and crude extracts revealed four distinct enzyme bands, which were differently inhibited by the specific proteinase inhibitors. The proteinase of the ESP with molecular mass of 24 kDa, was purified 23-fold with 14.5% yield by spectra gel ACA 44 gel filtration. It exhibited optimal pH at 7.5 in sodium phosphate (0.1 M). Its activity was inhibited specifically by N-ethylmaleimide (NEM) and antipain whereas potentiated 1.9 folds in the presence of 5 mM dithiothreitol (DTT). Cytotoxicity of the proteinase increased in a dose-dependent manner up to 120 micrograms/ml while reduced by NEM and antipain, indicating that cysteine proteinase was responsible for the cytotoxicity. This result shows that the 24 kDa cysteine proteinase is deeply correlated with the pathogenicity of C. sinensis infection.
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1296
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Freeman JL, Fetter RB, Park H, Schneider KC, Lichtenstein JL, Hughes JS, Bauman WA, Duncan CC, Freeman DH, Palmer GR. Diagnosis-related group refinement with diagnosis- and procedure-specific comorbidities and complications. Med Care 1995; 33:806-27. [PMID: 7637403 DOI: 10.1097/00005650-199508000-00006] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Diagnosis-related groups have been revised through more refined uses of secondary diagnoses. Under the refined diagnosis-related groups, patients are distinguished with respect to classes of secondary diagnoses that are disease- and procedure-specific. Each class represents a different level of utilization for a given principal diagnosis or surgical procedure. The refined system was evaluated with national data from the Medicare program. Estimates of hospital costs and utilization based on refined diagnosis-related groups were more precise than those based on unrefined diagnosis-related groups. This approach to diagnosis-related group refinement does not represent a radical departure from the current diagnosis-related group framework and does not require new data collection efforts. Moreover, a payment system based on the refined model is less affected by the ordering of the diagnoses than under the existing diagnosis-related group system. How the refined diagnosis-related group framework can accommodate future refinements at all levels of the classification scheme is also discussed.
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1297
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Artuso M, Gao M, Goldberg M, He D, Horwitz N, Moneti GC, Mountain R, Muheim F, Mukhin Y, Playfer S, Rozen Y, Stone S, Xing X, Zhu G, Bartelt J, Csorna SE, Egyed Z, Jain V, Gibaut D, Kinoshita K, Pomianowski P, Barish B, Chadha M, Chan S, Cowen DF, Eigen G, Miller JS, O'Grady C, Urheim J, Weinstein AJ, Würthwein F, Asner DM, Athanas M, Bliss DW, Brower WS, Masek G, Paar HP, Gronberg J, Korte CM, Kutschke R, Menary S, Morrison RJ, Nakanishi S, Nelson HN, Nelson TK, Qiao C, Richman JD, Roberts D, Ryd A, Tajima H, Witherell MS, Balest R, Cho K, Ford WT, Lohner M, Park H, Rankin P, Smith JG, Alexander JP, Bebek C, Berger BE, Berkelman K, Bloom K, Browder TE. Search for B-->. PHYSICAL REVIEW LETTERS 1995; 75:785-789. [PMID: 10060118 DOI: 10.1103/physrevlett.75.785] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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1298
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McKee G, Fonck R, Stratton B, Bell R, Budny R, Bush C, Grek B, Johnson D, Park H, Ramsey A, Synakowski E, Taylor G. Confined alpha distribution measurements in a deuterium-tritium tokamak plasma. PHYSICAL REVIEW LETTERS 1995; 75:649-652. [PMID: 10060079 DOI: 10.1103/physrevlett.75.649] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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1299
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Joiner J, Bhartia PK, Cebula RP, Hilsenrath E, McPeters RD, Park H. Rotational Raman scattering (Ring effect) in satellite backscatter ultraviolet measurements. APPLIED OPTICS 1995; 34:4513-4525. [PMID: 21052284 DOI: 10.1364/ao.34.004513] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A detailed radiative transfer calculation has been carried out to estimate the effects of rotational Raman scattering (RRS) on satellite measurements of backscattered ultraviolet radiation. Raman-scattered light is shifted in frequency from the incident light, which causes filling in of solar Fraunhofer lines in the observed backscattered spectrum (also known as the Ring effect). The magnitude of the rotational Raman scattering filling in is a function of wavelength, solar zenith angle, surface reflectance, surface pressure, and instrument spectral resolution. The filling in predicted by our model is found to be in agreement with observations from the Shuttle Solar Backscatter Ultraviolet Radiometer and the Nimbus-7 Solar Backscatter Ultraviolet Radiometer.
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1300
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Lee KB, Kweon J, Park H. Assignment of hyperfine-shifted heme carbon resonances in ferricytochrome b5. FEBS Lett 1995; 367:77-80. [PMID: 7601289 DOI: 10.1016/0014-5793(95)00500-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The reverse detection heteronuclear multiple quantum coherence, HMQC, study of native bovine ferricytochrome b5 has provided the complete assignment of hyperfine shifted resonances of heme carbons attached proton(s). The dominant delocalized pi-spin density to vinyl groups gives rise to contact shifts which have opposite direction for a carbon and its attached proton(s). The most hyperfine shifted 13C heme signals are mainly generated from 3rd heme pyrrole ring substituents which identifies that the molecular orbital for facile electron transfer is oriented to exposed heme edge. Magnetic/electronic asymmetry of heme induced by two axial His makes spread the hyperfine shifted heme carbon resonances over the range of 280 ppm at 25 degrees C, which would be the more sensitive probe than those of proton resonances in characterizing the nature of heme electronic structure of ferricytochrome b5.
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