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haem

Definition of the noun haem

What does haem mean as a name of something?

noun - plural: haems

  1. a complex red organic pigment containing iron and other atoms to which oxygen binds
    • lexical domain: Substances - nouns denoting substances
    • alternative spelling: heme
    • synonyms of haem: haemitin / hematin / protoheme
    • more generic word: pigment = dry coloring material
    • substance of: haemoglobin / Hb / hemoglobin = a hemoprotein composed of globin and heme that gives red blood cells their characteristic color; myoglobin = a hemoprotein that receives oxygen from hemoglobin and stores it in the tissues until needed; cytochrome = a class of hemoprotein whose principal biological function is electron transfer

Alternative definition of the noun haem

noun

  1. The component of haemoglobin responsible for binding oxygen, consists of an iron ion that binds oxygen and a porphyrin ring that binds the globin molecules; one molecule binds one molecule of oxygen.

Printed dictionaries and other books with definitions for haem

Click on a title to look inside that book (if available):

Google previewHaematology (2010)

by Gary Moore, Gavin Knight, Andrew Blann

Haem is a complex molecule synthesized in the cytoplasm and mitochondria of developing red blood cell precursors (principally...

Google previewEngineering Geology (1997)

by Wang Sijing, Paul G. Marinos

HAEM is an advanced GPP method basing on the underwater reflection of the acoustic wave to present the underwater geology and structures . Any rock or soil strata of obvious difference of wave resistance (DWR) can be differentiated ...

Google previewAnaerobic Bacteria (2013)

by K. T. Holland

For many haem is an essential nutrient and generally stimulates growth as a consequence of incorporation into cytochromes involved in fumarate reduction; it may also be incorporated into catalase. Since other species such as Bact.

Google previewTetrapyrroles (2009)

Birth, Life and Death by Martin Warren, Alison Smith

Haem is an essential cofactor for virtually all organisms. It is made from the common tetrapyrrole progenitor, uroporphyrinogen III, by four sequential enzymes: uroporphyrinogen III decarboxylase, coproporphyrinogen III oxidase, ...

Google previewRegulation of Haemoglobin Synthesis (2012)

by J. Neuwirt, P. Ponka

The results which are analyzed in detail below indicate that the level of nonhaemoglobin haem is the limiting factor of iron uptake by the immature erythroid cell. This fact indicates that the actively metabolizing erythroid cell possesses a ...

Google previewIntroduction to Nutrition and Metabolism, Fourth Edition (2002)

by David A. Bender

example, haem is an organic compound containing iron that is the coenzyme for a variety of enzymes, collectively known as the cytochromes (section 3.3.1.2). Haem is also the prosthetic group of haemoglobin, the protein in red blood cells ...

Google previewSherlock's Diseases of the Liver and Biliary System (2011)

by James S. Dooley, Anna Lok, Andrew K. Burroughs, Jenny Heathcote

Haem is an important component of both haemoglobin and enzymes such as the cytochrome P450 oxidase system so porphyrin production is most pronounced in hepatic cells and erythrocytes, giving one broad classification of porphyrias as ...

Google previewMolecular Geometry of Body Pattern in Birds (2012)

by Antonio Lima-de-Faria

Haem is the nonamino acid portion of hemoglobin, a respiratory protein of the red blood cells, in which the iron atom combines with oxygen. Catalase occurs in blood and contains haematin. Its activity involves the oxidation and reduction of ...

Google previewThe Fertilizer Encyclopedia (2009)

by Vasant Gowariker, V. N. Krishnamurthy, Sudha Gowariker, Manik Dhanorkar, Kalyani Paranjape

(Haem is an iron containing compound of the prophyrin class which forms the non-protein part of hemoglobin and some other biological molecules). They are pigments occurring in the cells of nearly all animals and plants. Several types are ...

Google previewMacmillan Dictionary of Chemistry (1987)

by D. Brynn Hibbert, A.M. James

haem. Iron(II)-porphyrin complex with iron in the +2 oxidation state (see Figure). Haemin ((RN)4Fet), the oxidized form of haem, is the PROSTHETIC GROUP of a number of important enzymes (e.g., catalase).

Google previewA Dictionary of Food and Nutrition (2009)

by David A. Bender

haem (heme) The iron-containing pigment (a tetrapyrrole) which forms the oxygenbinding site of *haemoglobin and * myoglobin. It is also part of a ...

Google previewA Dictionary of Chemistry (2008)

by John Daintith

An ironcontaining molecule thatbindswith proteins as a *cofactor or *prosthetic group toformthe haemoproteins. These are *haemoglobin, *myoglobin, and the * cytochromes. Essentially, haem comprises a*porphyrin withits four nitrogen atoms ...

Google previewBenders’ Dictionary of Nutrition and Food Technology (2006)

by D A Bender

haem (heme) The iron-containing porphyrin that, in combination with the protein globin, forms haemoglobin and myoglobin. It is also ...

Google previewA Dictionary of Science (2017)

by Jonathan Law

haem. (heme) An ironcontaining molecule that binds with proteins as a *cofactor or *prosthetic group to form the haemoproteins.

Essentially, haem comprises a *porphyrin with its four nitrogen atoms holding the iron(II) atom as a chelate.

Online dictionaries and encyclopedias with entries for haem

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Photos about haem

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Small photo of June 30, 2017. Gan HaEm is a public garden in Haifa, Israel. Pride parade and a holiday of love, organized by the LGBT community with the mediation of city authorities. Entertainer in purple attire.Small photo of June 30, 2017. Gan HaEm is a public garden in Haifa, Israel. Pride parade, organized by the LGBT community with the mediation of city authorities. Congratulations to the participants from the stageSmall photo of June 30, 2017. Gan HaEm is a public garden in Haifa, Israel. Pride parade and a holiday of love, organized by LGBT community with the participation of city authorities. Girl in a blue wigSmall photo of June 30, 2017. Gan HaEm is a public garden in Haifa, Israel. Pride parade and a holiday of love, organized by LGBT community with the participation of city authorities. Soldiers guarding the feastSmall photo of June 30, 2017. Gan HaEm is a public garden in Haifa-Israel. Pride parade and a holiday of love, organized by LGBT community with the participation of city authorities. Dad with a baby on his shouldersSmall photo of June 30, 2017. Gan HaEm is a garden in Haifa-Israel. Pride parade and a holiday of love, organized by LGBT community with the participation of city authorities. Portrait of a laughing female spectatorSmall photo of June 30, 2017. Gan HaEm is a public garden in Haifa, Israel. Pride parade and a holiday of love, organized by LGBT community with the participation of city authorities. Transvestite with glasses More...

Video about haem

Haem Meaning

Video shows what haem means. The component of haemoglobin responsible for binding oxygen, consists of an iron ion that binds oxygen and a porphyrin ring ...

Scrabble value of H4A1E1M3

The value of this 4-letter word is 9 points. It is included in the first and second editions of the Official Scrabble Players Dictionary.

Anagrams of HAEM

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See also the blanagrams of haem!

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