Haem

And this leaves just the central core of the haemoglobin called the haem group, which is what's known as a porphyrin ring. ❋ Unknown (2010)

Other nutritional virtues include the easily absorbed iron known as "haem" iron. ❋ Unknown (2009)

"Non-haem" iron from plant foods such as baked beans, nuts, seeds and dark green, leafy vegetables is less well absorbed than "haem" iron in meat. ❋ Unknown (2009)

Experts suspect that haem, the pigment which gives red meat its color, damages cells in the digestive system, which may lead to cancer. ❋ Unknown (2011)

Haem iron is only found in animal tissues, non-haem iron is found in grains, fruits, vegetable, legumes, nuts and eggs. ❋ Unknown (2007)

Haem iron is most readily absorbed by the body and also increases the uptake of non-haem iron. ❋ Unknown (2007)

Most striking was the finding that depletion of haem, and addition of GSSG or dsRNA all seemed to have similar effects on cell-free protein synthesis in the reticulocyte lysate, as though these disparate agents all acted in a similar manner. ❋ Unknown (2002)

Together with Tony Hunter, a fellow student, I became interested in the question of when the haem was inserted into globin to make haemoglobin, and the question of whether ribosomes had to queue up under conditions where iron (and hence haem) was limiting. ❋ Unknown (2002)

It took three or four years to realise that this inhibition was due to the action of at least two inhibitors of the process, one activated by the absence of haem, the other by the presence of dsRNA, and that these inhibitors were protein kinases, which phosphorylated eIF-2, the key initiation factor that catalysed the binding of ❋ Unknown (2002)

New York to work with Irving, who had long been interested in the haem question. ❋ Unknown (2002)

He had given Kendrew and me bench space in his biochemistry laboratory for the preparation of our crystals and was keenly interested in all haem proteins, including haemoglobin. ❋ Unknown (1997)

One compound in particular, haem, which gives red meat its colour, has been shown to damage the lining of the colon in some studies. ❋ Unknown (2011)

As a consequence, the mitochondria don't receive enough iron, so they can't function properly, and can't make enough haem and iron sulphur clusters available to the cell machinery that depends on them. ❋ Unknown (2010)

Mitochondria need iron in order to function, but they also convert iron into other chemical forms used throughout the cell: iron sulphur clusters and haem - one of the building blocks of haemoglobin. ❋ Unknown (2010)

This mechanism for regulating iron balance could be particularly important in cells with very high mitochondrial iron needs, such as red blood cell precursors that manufacture copious amounts of haem for oxygen transport. ❋ Unknown (2010)

And they also found that during the period, samples treated with tannic acid and kept under all packaging conditions contained lower peroxide value (PV) and thiobarbituric acid-reactive substances (TBARS) with coincidental lower non-haem iron content, compared with non-treated counterparts. ❋ [email protected] (2010)