Coproporphyrinogen III: Difference between revisions
Content deleted Content added
m ref |
biosynthetic context |
||
Line 37: | Line 37: | ||
}} |
}} |
||
}} |
}} |
||
'''Coproporphyrinogen III''' |
'''Coproporphyrinogen III''' is a [[metabolic intermediate]] in the [[biosynthesis]] of [[heme]]. It is a colorless compound, classified as a [[tetrapyrrole]]. |
||
==Biosynthetic context== |
|||
The [[tetrapyrrole]] [[hydroxymethylbilane]] is converted by the action of [[uroporphyrinogen-III synthase]] to [[uroporphyrinogen III]].<ref name=Hemes>{{cite encyclopedia|title=Hemes in Biology|author=Paul R. Ortiz de Montellano|year=2008|encyclopedia=Wiley Encyclopedia of Chemical Biology|doi=10.1002/9780470048672.wecb221|publisher=John Wiley & Sons}}</ref> Uroporphyrinogen III is subsequently converted into [[coproporphyrinogen III]], a conversion that entails four [[decarboxylation]]s: |
|||
:uroporphyrinogen III → coproporphyrinogen III + 4 CO<sub>2</sub> |
|||
==Structural patterns of isomers== |
|||
The difference between coproporphyrinogen I and III is the arrangements of the four [[propionic acid|carboxyethyl]] ("P" groups) and the four [[methyl]] groups ("Me" groups). Coproporphyrinogen I has the sequence MeP-MeP-MeP-meP, whereas in coproporphyrinogen III one MeP-group is reversed and hence an MeP-MeP-MeP-PMe arrangement. |
|||
==References== |
==References== |
||
<references /> |
<references /> |
||
{{-}} |
{{-}} |
||
[[File:Heme synthesis.png|center|framed|Heme synthesis—note that some reactions occur in the [[cytoplasm]] and some in the [[mitochondrion]] (yellow)]] |
[[File:Heme synthesis.png|center|framed|Heme synthesis—note that some reactions occur in the [[cytoplasm]] and some in the [[mitochondrion]] (yellow)]] |
Revision as of 01:25, 2 October 2017
Names | |
---|---|
IUPAC name
3-[8,12,17-tris(2-carboxyethyl)-3,7,13,18-tetramethyl-5,10,15,20,21,22, 23,24-octahydroporphyrin-2-yl]propanoic acid
| |
Identifiers | |
3D model (JSmol)
|
|
ChemSpider | |
MeSH | Coproporphyrinogen+III |
PubChem CID
|
|
CompTox Dashboard (EPA)
|
|
| |
| |
Properties | |
C36H44N4O8 | |
Molar mass | 660.757 g/mol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|
Coproporphyrinogen III is a metabolic intermediate in the biosynthesis of heme. It is a colorless compound, classified as a tetrapyrrole.
Biosynthetic context
The tetrapyrrole hydroxymethylbilane is converted by the action of uroporphyrinogen-III synthase to uroporphyrinogen III.[1] Uroporphyrinogen III is subsequently converted into coproporphyrinogen III, a conversion that entails four decarboxylations:
- uroporphyrinogen III → coproporphyrinogen III + 4 CO2
Structural patterns of isomers
The difference between coproporphyrinogen I and III is the arrangements of the four carboxyethyl ("P" groups) and the four methyl groups ("Me" groups). Coproporphyrinogen I has the sequence MeP-MeP-MeP-meP, whereas in coproporphyrinogen III one MeP-group is reversed and hence an MeP-MeP-MeP-PMe arrangement.
References
- ^ Paul R. Ortiz de Montellano (2008). "Hemes in Biology". Wiley Encyclopedia of Chemical Biology. John Wiley & Sons. doi:10.1002/9780470048672.wecb221.