COENZYME-F430 FROM METHANOGENIC BACTERIA - OXIDATION OF F430 PENTAMETHYL ESTER TO THE NI(III) FORM

被引：64

作者：

JAUN, B

机构：

[1] Laboratoriurn Für Organische Chemie, Eidgenössische Technische Hochschule, Zürich, CH-8092, Universitätstr

来源：

HELVETICA CHIMICA ACTA | 1990年 / 73卷 / 08期

关键词：

D O I：

10.1002/hlca.19900730818

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

F430M, the pentamethyl ester of coenzyme F430, can be oxidized reversibly by one electron. The oxidation potential has been determined, and the electrolytically prepared oxidation product was characterized by its UV/VIS and ESR spectrum. The strongly anisotropic and nearly axial ESR spectrum is consistent with a S = ½ species with the unpaired‐electron spin density predominantly in a d z 2‐type orbital of the central nickel ion. The properties of Ni(III)F430M are discussed in the context of two hypothetical mechanisms for the catalytic role of coenzyme F430 in methyl coenzyme M reductase, which catalyses the last step of methane formation in methanogenic bacteria. Copyright © 1990 Verlag GmbH & Co. KGaA, Weinheim

引用

页码：2209 / 2217

页数：9

共 32 条

[11] FORMALDEHYDE ACTIVATION FACTOR, TETRAHYDROMETHANOPTERIN, A COENZYME OF METHANOGENESIS
ESCALANTESEMERENA, JC
LEIGH, JA
RINEHART, KL
WOLFE, RS
[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES, 1984, 81 (07): : 1976 - 1980
[12] CHEMISTRY OF CORPHINOIDS
ESCHENMOSER, A
[J]. ANNALS OF THE NEW YORK ACADEMY OF SCIENCES-SERIES, 1986, 471 : 108 - 129
[13] FARBER G, UNPUB
[14] RECOMMENDATIONS ON REPORTING ELECTRODE-POTENTIALS IN NONAQUEOUS SOLVENTS (RECOMMENDATIONS 1983)
GRITZNER, G
KUTA, J
[J]. PURE AND APPLIED CHEMISTRY, 1984, 56 (04) : 461 - 466
[15] GUNSALUS RP, 1978, FEMS MICROBIOL LETT, V3, P191
[16] COENZYME-F430 FROM METHANOGENIC BACTERIA - REVERSIBLE ONE-ELECTRON REDUCTION OF F430 PENTAMETHYL ESTER TO THE NICKEL(I) FORM
JAUN, B
PFALTZ, A
[J]. JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1986, (17) : 1327 - 1329
[17] THE L-FORM OF N-7-MERCAPTOHEPTANOYL-O-PHOSPHOTHREONINE IS THE ENANTIOMER ACTIVE AS COMPONENT-B IN METHYL-COM REDUCTION TO METHANE
KOBELT, A
PFALTZ, A
ANKELFUCHS, D
THAUER, RK
[J]. FEBS LETTERS, 1987, 214 (02) : 265 - 268
[18] CHEMISTRY OF CORPHINOIDS - STRUCTURAL-PROPERTIES OF CORPHINOID NICKEL(II) COMPLEXES RELATED TO COENZYME-F430
KRATKY, C
FASSLER, A
PFALTZ, A
KRAUTLER, B
JAUN, B
ESCHENMOSER, A
[J]. JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1984, (20) : 1368 - 1371
[19] THE SADDLE CONFORMATION OF HYDROPORPHINOID NICKEL(II) COMPLEXES - STRUCTURE, ORIGIN, AND STEREOCHEMICAL CONSEQUENCES
KRATKY, C
WADITSCHATKA, R
ANGST, C
JOHANSEN, JE
PLAQUEVENT, JC
SCHREIBER, J
ESCHENMOSER, A
[J]. HELVETICA CHIMICA ACTA, 1985, 68 (05) : 1312 - 1337
[20] EPR OBSERVATION OF CARBON-MONOXIDE DEHYDROGENASE, METHYLREDUCTASE AND CORRINOID IN INTACT METHANOSARCINA-BARKERI DURING METHANOGENESIS FROM ACETATE
KRZYCKI, JA
PRINCE, RC
[J]. BIOCHIMICA ET BIOPHYSICA ACTA, 1990, 1015 (01) : 53 - 60

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