On this page:
Definition of the noun haem
What does haem mean as a name of something?
noun - plural: haems
- 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
- 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):
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...
Engineering 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 ...
Anaerobic 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.
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, ...
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 ...
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 18.104.22.168). Haem is also the prosthetic group of haemoglobin, the protein in red blood cells ...
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 ...
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 ...
The 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 ...
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).
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 ...
A 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 ...
by D A Bender
haem (heme) The iron-containing porphyrin that, in combination with the protein globin, forms haemoglobin and myoglobin. It is also ...
A 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
Click on a label to prioritize search results according to that topic:
Photos about haem
If you need images about haem for an article or a report, you can download stock photos at a very small price:
Video about haem
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
What do you get if you rearrange the letters?
See also the blanagrams of haem!
Share this page
Go to the usage examples of haem to see it in context!