An extended-X-ray-absorption-fine-structure (e.x.a.f.s.) study of coenzyme F430 from Methanobacterium thermoautotrophicum.

نویسندگان

  • G P Diakun
  • B Piggott
  • H J Tinton
  • D Ankel-Fuchs
  • R K Thauer
چکیده

Coenzyme F430 is a nickel porphinoid found in all methanogenic bacteria. Extended-X-ray-absorption-fine-structure (e.x.a.f.s.) spectra have been recorded above the nickel K-edge of coenzyme F430 and two model compounds, (5,10,15,20-tetramethylporphinato) nickel(II) and (5,10,15,20-tetramethylchlorinato)-nickel(II). The results show that the four nickel-nitrogen distances in F430 are split, with two nitrogen atoms at 0.192 nm and two at 0.210 nm.

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Structural heterogeneity and purification of protein-free F430 from the cytoplasm of Methanobacterium thermoautotrophicum.

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عنوان ژورنال:
  • The Biochemical journal

دوره 232 1  شماره 

صفحات  -

تاریخ انتشار 1985