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Volumn 41, Issue 23, 2002, Pages 4529-4532

Mechanistic studies of HPP epoxidase: Configuration of the substrate governs its enzymatic fate

Author keywords

Biosynthesis; Enzymes; Fosfomycin; Radicals; Reaction mechanisms

Indexed keywords

BIOCONVERSION; CATALYSIS; HYDROGEN; IRON; OXIDATION; SUBSTRATES;

EID: 0037011396     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/1521-3773(20021202)41:23<4529::AID-ANIE4529>3.0.CO;2-2     Document Type: Article
Times cited : (49)

References (29)
  • 6
    • 2242459581 scopus 로고    scopus 로고
    • note
    • b) a full account of the biochemical and spectroscopic characterization of the iron center of HPP epoxidase will be published elsewhere.
  • 9
    • 0027248795 scopus 로고
    • Two closely related examples are the epoxide ring formation catalyzed by hyoscyamine 6β-hydroxylase involved in the biosynthesis of scopolamine (T. Hashimoto, J. Matsuda, Y. Yamada, FEBS Lett. 1993, 329, 35-39) and the ring closure of proclavaminic acid catalyzed by clavaminate synthase (K. H. Baggaley, A. G. Brown, C. J. Schofield, Nat. Prod. Rep. 1997, 14, 309-333; D. Iwata-Reuyl, A. Basak, C. A. Townsend, J. Am. Chem. Soc. 1999, 121, 11356-11368). Both enzymes belong to the family of α-ketoglutarate-dependent non-heme iron oxygenases.
    • (1993) FEBS Lett. , vol.329 , pp. 35-39
    • Hashimoto, T.1    Matsuda, J.2    Yamada, Y.3
  • 10
    • 0031214349 scopus 로고    scopus 로고
    • Two closely related examples are the epoxide ring formation catalyzed by hyoscyamine 6β-hydroxylase involved in the biosynthesis of scopolamine (T. Hashimoto, J. Matsuda, Y. Yamada, FEBS Lett. 1993, 329, 35-39) and the ring closure of proclavaminic acid catalyzed by clavaminate synthase (K. H. Baggaley, A. G. Brown, C. J. Schofield, Nat. Prod. Rep. 1997, 14, 309-333; D. Iwata-Reuyl, A. Basak, C. A. Townsend, J. Am. Chem. Soc. 1999, 121, 11356-11368). Both enzymes belong to the family of α-ketoglutarate-dependent non-heme iron oxygenases.
    • (1997) Nat. Prod. Rep. , vol.14 , pp. 309-333
    • Baggaley, K.H.1    Brown, A.G.2    Schofield, C.J.3
  • 11
    • 0033572748 scopus 로고    scopus 로고
    • Two closely related examples are the epoxide ring formation catalyzed by hyoscyamine 6β-hydroxylase involved in the biosynthesis of scopolamine (T. Hashimoto, J. Matsuda, Y. Yamada, FEBS Lett. 1993, 329, 35-39) and the ring closure of proclavaminic acid catalyzed by clavaminate synthase (K. H. Baggaley, A. G. Brown, C. J. Schofield, Nat. Prod. Rep. 1997, 14, 309-333; D. Iwata-Reuyl, A. Basak, C. A. Townsend, J. Am. Chem. Soc. 1999, 121, 11356-11368). Both enzymes belong to the family of α-ketoglutarate-dependent non-heme iron oxygenases.
    • (1999) J. Am. Chem. Soc. , vol.121 , pp. 11356-11368
    • Iwata-Reuyl, D.1    Basak, A.2    Townsend, C.A.3
  • 13
    • 2242465818 scopus 로고    scopus 로고
    • note
    • 2O): δ = 11.1 ppm (s).
  • 14
    • 2242483852 scopus 로고    scopus 로고
    • note
    • 1H NMR spectroscopy. Reaction rates were estimated based on the integrals of the well-resolved methyl signals associated with substrate and product.
  • 15
    • 0033588164 scopus 로고    scopus 로고
    • Oxidation of an alcohol to the corresponding ketone via a gem-diol intermediate is well documented for P450-catalyzed reactions (for a recent example see: L. C. Bell-Parikh, F. P. Guengerich, J. Biol. Chem. 1999, 274, 23833-23840).
    • (1999) J. Biol. Chem. , vol.274 , pp. 23833-23840
    • Bell-Parikh, L.C.1    Guengerich, F.P.2
  • 16
    • 2242461415 scopus 로고    scopus 로고
    • note
    • 4 and then bromotrimethylsilane-mediated hydrolysis.
  • 17
    • 2242471278 scopus 로고    scopus 로고
    • note
    • 2O): δ = 5.44 ppm (t, J = 82.4 Hz).
  • 20
    • 2242428992 scopus 로고    scopus 로고
    • note
    • Attempts to derivatize the diethyl ester 9 with various chiral acids to resolve the racemic mixture were futile.
  • 22
    • 2242469436 scopus 로고    scopus 로고
    • note
    • ++H]: mlz: 193.0077, found 193.0072.
  • 25
    • 0032499626 scopus 로고    scopus 로고
    • The possible involvement of a ketyl radical in the turnover of (R)-1 and (R)-8 is reminiscent of the mechanism of the oxidation of primary alcohols catalyzed by galactose oxidase (M. M. Whittaker, D. P. Ballou, J. W. Whittaker, Biochemistry 1998, 37, 8426-8436; B. E. Turner, B. P. Branchaud, Bioorg. Med. Chem. Lett. 1999, 9, 3341-3346).
    • (1998) Biochemistry , vol.37 , pp. 8426-8436
    • Whittaker, M.M.1    Ballou, D.P.2    Whittaker, J.W.3
  • 26
    • 0033530861 scopus 로고    scopus 로고
    • The possible involvement of a ketyl radical in the turnover of (R)-1 and (R)-8 is reminiscent of the mechanism of the oxidation of primary alcohols catalyzed by galactose oxidase (M. M. Whittaker, D. P. Ballou, J. W. Whittaker, Biochemistry 1998, 37, 8426-8436; B. E. Turner, B. P. Branchaud, Bioorg. Med. Chem. Lett. 1999, 9, 3341-3346).
    • (1999) Bioorg. Med. Chem. Lett. , vol.9 , pp. 3341-3346
    • Turner, B.E.1    Branchaud, B.P.2
  • 29
    • 0036212226 scopus 로고    scopus 로고
    • A recent report has shown that the (1S,2S)-epoxypropylphosphonic acid exists as a co-metabolite of fosfomycin ((1R,2S)-epoxypropyl-phosphonic acid, 2) in the culture broth of Streptomyces fradiae. Formation of this 1S epimer has been speculated as a result of racemization of the radical intermediate (such as 4 or its equivalent) generated during turnover catalyzed by HPP epoxidase (B. P. Simov, F. Wuggenig, M. Lämmerhofer, W. Lindner, E. Zarbl, F. Hammerschmidt, Eur. J. Org. Chem, 2002, 1139-1142).
    • (2002) Eur. J. Org. Chem. , pp. 1139-1142
    • Simov, B.P.1    Wuggenig, F.2    Lämmerhofer, M.3    Lindner, W.4    Zarbl, E.5    Hammerschmidt, F.6


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.