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Journal Abstract Search

137 related items for PubMed ID: 4638793

  • 1. The reaction of papain with Ellman's reagent (5,5'-dithiobis- (2-nitrobenzoate) dianion).
    Brocklehurst K, Kierstan M, Little G.
    Biochem J; 1972 Jul; 128(4):811-6. PubMed ID: 4638793
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  • 2. Kinetics of the reversible reaction of papain with 5,5'-dithiobis-(2-nitrobenzoate) dianion: evidence for nucleophilic reactivity in the un-ionized thiol group of cysteine-25 and for general acid catalysis by histidine-159 of the reaction of the 5-mercapto-2-nitrobenzoate dianion with the papain-5-mercapto-2-nitrobenzoate mixed disulphide.
    Little G, Brocklehurst K.
    Biochem J; 1972 Jun; 128(2):475-7. PubMed ID: 5084801
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  • 4. A marked gradation in active-centre properties in the cysteine proteinases revealed by neutral and anionic reactivity probes. Reactivity characteristics of the thiol groups of actinidin, ficin, papain and papaya peptidase A towards 4,4'-dipyridyl disulphide and 5,5'-dithiobis-(2-nitrobenzoate) dianion.
    Brocklehurst K, Mushiri SM, Patel G, Willenbrock F.
    Biochem J; 1983 Mar 01; 209(3):873-9. PubMed ID: 6347181
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  • 6. Characterization of the papain active centre by using two-protonic-state electrophiles as reactivity probes. Evidence for nucleophilic reactivity in the un-interrupted cysteine-25-histidine-159 interactive system.
    Shipton M, Brochlehurst K.
    Biochem J; 1978 May 01; 171(2):385-401. PubMed ID: 26335
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  • 8. 5-(2-Aminoethyl)dithio-2-nitrobenzoate as a more base-stable alternative to Ellman's reagent.
    Zhu J, Dhimitruka I, Pei D.
    Org Lett; 2004 Oct 14; 6(21):3809-12. PubMed ID: 15469355
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  • 11. Differences in the chemical and catalytic characteristics of two crystallographically 'identical' enzyme catalytic sites. Characterization of actinidin and papain by a combination of pH-dependent substrate catalysis kinetics and reactivity probe studies targeted on the catalytic-site thiol group and its immediate microenvironment.
    Salih E, Malthouse JP, Kowlessur D, Jarvis M, O'Driscoll M, Brocklehurst K.
    Biochem J; 1987 Oct 01; 247(1):181-93. PubMed ID: 2825655
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  • 12. Evidence that binding to the s2-subsite of papain may be coupled with catalytically relevant structural change involving the cysteine-25-histidine-159 diad. Kinetics of the reaction of papain with a two-protonic-state reactivity probe containing a hydrophobic side chain.
    Brocklehurst K, Malthouse JP, Shipton M.
    Biochem J; 1979 Nov 01; 183(2):223-31. PubMed ID: 43129
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  • 13. Thiol-disulfide exchange reactions occurring at modified bovine serum albumin detected using ellman's reagent (5, 5'-dithiobis (2-itrobenzoic acid).
    Khan H, Khan KA, Khan MK, Ahmad A, Niazi ZR, Mangi A, -Rehman FU, Shah KU, Gul R, Jan SU.
    Pak J Pharm Sci; 2020 Nov 01; 33(6(Supplementary)):2767-2772. PubMed ID: 33879435
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  • 14. Structure of chymopapain M the late-eluted chymopapain deduced by comparative modelling techniques and active-centre characteristics determined by pH-dependent kinetics of catalysis and reactions with time-dependent inhibitors: the Cys-25/His-159 ion-pair is insufficient for catalytic competence in both chymopapain M and papain.
    Thomas MP, Topham CM, Kowlessur D, Mellor GW, Thomas EW, Whitford D, Brocklehurst K.
    Biochem J; 1994 Jun 15; 300 ( Pt 3)(Pt 3):805-20. PubMed ID: 8010964
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  • 15. Reactions of L-ergothioneine and some other aminothiones with2,2'-and 4,4'-dipyridyl disulphides and of L-ergothioneine with iodoacetamide. 2-Mercaptoimidazoles, 2- and 4-thiopyridones, thiourea and thioacetamide as highly reactive neutral sulphur nucleophils.
    Carlsson J, Kierstan MP, Brocklehurst K.
    Biochem J; 1974 Apr 15; 139(1):221-35. PubMed ID: 4463944
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  • 18. Investigation of the catalytic site of actinidin by using benzofuroxan as a reactivity probe with selectivity for the thiolate-imidazolium ion-pair systems of cysteine proteinases. Evidence that the reaction of the ion-pair of actinidin (pKI 3.0, pKII 9.6) is modulated by the state of ionization of a group associated with a molecular pKa of 5.5.
    Salih E, Brocklehurst K.
    Biochem J; 1983 Sep 01; 213(3):713-8. PubMed ID: 6311173
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  • 20. Ionization characteristics of the Cys-25/His-159 interactive system and of the modulatory group of papain: resolution of ambiguity by electronic perturbation of the quasi-2-mercaptopyridine leaving group in a new pyrimidyl disulphide reactivity probe.
    Mellor GW, Thomas EW, Topham CM, Brocklehurst K.
    Biochem J; 1993 Feb 15; 290 ( Pt 1)(Pt 1):289-96. PubMed ID: 8439297
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