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Pigment in red blood cells
Answer for the clue "Pigment in red blood cells ", 4 letters:
heme
Alternative clues for the word heme
Word definitions for heme in dictionaries
Wikipedia
Word definitions in Wikipedia
Heme or haem (from Greek haima meaning blood) is a cofactor consisting of an Fe ( ferrous ) ion contained in the centre of a large heterocyclic organic ring called a porphyrin , made up of four pyrrolic groups joined together by methine bridges. Not all ...
WordNet
Word definitions in WordNet
n. a complex red organic pigment containing iron and other atoms to which oxygen binds [syn: haem , hematin , haemitin , protoheme ]
Usage examples of heme.
This time it resolved itself into the angular, antlered face of Heme, the Lord of the Forest and the Wild Hunt.
Tiny twigs stuck to his head, and he looked for all the world like a miniature version of Heme in his guise as the Lord of the Forests.
The Goblin King opened his eyes, and Heme stepped up and out of his body, rivulets of dark red blood drying in the gaping wound where his antlers had been.
So was its sister planet Heme, the only other inhabited world in the system.
Worn-out hemoglobin is broken up in the liver, the heme part being split away.
The heme is made up of a squarish molecule--called a porphyrin--with an iron atom in the center.
We separated out the heme and in acid solution some of it precipitated in the form of a brilliant orange substance.
One of the things done was to isolate fresh samples of heme from The Goose, ash it and send the iron oxide to Brookhaven for isotopic analysis.
The iron from the heme of The Goose was made up only of Fe54, Fe67, and Fe58.
One known intermediate is iron-56 and the fact that auremoglobin is formed in the process leads us to suspect that the enzyme or enzymes involved may have heme as a prosthetic group.
The essential thing was to get him on oxygen as fast as possible, then hook him up to a fluid replacer, a heme carrier: he was bleeding so badly that oxygen starvation was the biggest danger.