然而,这种蔬菜含有的铁元素是一种非血红素铁(non-haem iron)形式,它不像生肉所含的血红素铁那样容易被人体吸收。但福 … wenwen.soso.com|基于28个网页 2. 非血红铁质 铁质分两种,分别为血红铁质 (haem iron) 和非血红铁质(non-haem iron)。前者为动物性铁质,较易被人体吸收,可从牛肉、 … ...
Mechanistic investigations showed that the N–F bond activation is the rate-determining step, and the strong preference for fluorination in the presence of excess NaN3 can be attributed to the spatial proximity of the carbon-centred radical to the iron-bound fluoride. This is a preview of ...
Photobiocatalysis with non-haem iron enzymes for enantioselective radical transformations. Nat Catal 7, 1266–1267 (2024). https://doi.org/10.1038/s41929-024-01263-9 Download citation Published20 December 2024 Issue DateDecember 2024 DOIhttps://doi.org/10.1038/s41929-024-01263-9 Subjects Biocataly...
A. Edwardson : Non-haem iron histochemistry of the normal and Alzheimer's disease hippocampus . Neurodegeneration 1994 , 3 , 267 – 275 .Morris CM, Kerwin JM, Edwardson JA. Non-haem iron histochemistry of the normal and Alzheimer's disease hippocampus. Neurodegenera- tion 1994;3:267-275...
RECENTLY, Gillard, McKenzie, Mason, Mayhew, Peel and Stangroom 1 presented optical rotatory dispersion data on non-haem iron proteins from several sources. They found that whereas the bacterial ferredoxins from Clostridium acidi-urici, C. pasteurianum and Peptostreptococcus elsdenii and the rubredox...
Ndm was deduced to be a Rieske [2Fe-2S]-domain-containing non-haem iron oxygenase based on (i) its distinct absorption spectrum and (ii) significant identity of the N-terminal sequences of NdmA and NdmB with the gene product of an uncharacterized caffeine demethylase in P. putida IF-3 ...
STRUCTURE AND BONDINGLeBrun, N. E., Thomson, A. J., and Moore, G. R. (1997) Metal centres of bacterioferritins or non-haem-iron-containing cytochromes b(557). Metal Sites in Proteins and Models 88, 103-138N.E. Le Brun, A.J. Thomson, G.R. Moore, Metal centres of bacterio...
A divalent metal transporter, DMT1, located on the apical membrane of intestinal enterocytes is the major pathway for the absorption of dietary non-haem iron. Using human intestinal Caco-2 TC7 cells, we have shown that iron uptake and DMT1 protein in the plasma membrane were significantly ...
Structural, spectroscopic and chemical features of the metal centres of non-haem-iron-containing cytochrome b557 are described. This haemoprotein is a member of the ferritin family of proteins and thus is also called bacterioferritin. It consists of 24 p
EPR studies of bacterioferritin (BFR), an iron-storage protein of Escherichia coli [1993, Biochem. J. 292, 47-56], have revealed the presence of non-haem iron (III) (NHI) sites within the protein coat which may be involved in iron uptake and release. When nitric oxide was used as an...