Lability: Difference between revisions
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{{Short description|Tendency to undergo change: instability}} |
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{{For|the psychological term|Labile affect}} |
{{For|the psychological term|Labile affect}} |
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{{Wiktionary}} |
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'''Lability''' refers to something that is constantly undergoing change or |
'''Lability''' refers to something that is constantly undergoing change or is likely to undergo change. It is the opposite ([[Opposite (semantics)|antonym]]) of stability. |
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== Biochemistry == |
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| ⚫ | The |
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== Biology == |
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=== Cells === |
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| ⚫ | Labile [[Cell (biology)|cell]]s refer to cells that constantly [[cell division|divide]] by entering and remaining in the [[cell cycle]].<ref name="urlRegeneration and Repair">{{cite web |url=http://www.usc.edu/hsc/dental/PTHL312abc/312a/04/Reader/reader_set.html |title=Regeneration and Repair |website= usc.edu|archive-url=https://web.archive.org/web/20081128182200/http://www.usc.edu/hsc/dental/PTHL312abc/312a/04/Reader/reader_set.html |archive-date=2008-11-28 |url-status=dead }}</ref> These are contrasted with "stable cells" and "permanent cells". |
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===Cells=== |
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| ⚫ | Labile |
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An important example of this is in the [[epithelium]] of the [[cornea]], where cells divide at the basal level and move upwards, and the |
An important example of this is in the [[epithelium]] of the [[cornea]], where cells divide at the basal level and move upwards, and the topmost cells [[apoptosis|die and fall off]]. |
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===Proteins=== |
=== Proteins === |
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In medicine, the term "labile" means susceptible to alteration or destruction. |
In medicine, the term "labile" means susceptible to alteration or destruction. For example, a heat-labile [[protein]] is one that can be changed or destroyed at high temperatures. |
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The opposite of labile in this context is "stable |
The opposite of labile in this context is "stable".<ref name="pmid9665996">{{cite journal |last1=Jackson |first1=C. J. |last2=Fox |first2=A. J. |last3=Jones |first3=D. M. |last4=Wareing |first4=D. R. |last5=Hutchinson |first5=D. N |title=Associations between heat-stable (O) and heat-labile (HL) serogroup antigens of ''Campylobacter jejuni'': evidence for interstrain relationships within three O/HL serovars |journal=Journal of Clinical Microbiology |volume=36 |issue=8 |pages=2223–2228 |date=August 1998 |doi=10.1128/JCM.36.8.2223-2228.1998 |pmid=9665996 |pmc=105019 |url=}}</ref> |
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=== Soils === |
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Compounds or materials that are easily transformed (often by [[biological activity]]) are termed labile. For example, labile [[phosphate]] is that fraction of soil phosphate that is readily transformed into soluble or plant-available phosphate.<ref>{{cite journal|last1=Mattingly|first1=G. E. G.|title=Labile phosphate in soils|journal=Soil Science|date=1975|volume=119|issue=5|page=369|doi=10.1097/00010694-197505000-00007|bibcode=1975SoilS.119..369M|s2cid=93102505}}</ref> Labile organic matter is the [[soil organic matter]] that is easily decomposed by [[microorganism]]s.<ref>{{cite web|title=Can simple measures of labile soil organic matter predict corn performance?|url=https://www.sciencedaily.com/releases/2013/02/130211102312.htm|website=ScienceDaily.com|access-date=29 August 2014}}</ref> |
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{{reflist}} |
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| ⚫ | The term is used to describe a transient [[chemical species]]. As a general example, if a molecule exists in a particular conformation for a short lifetime, before adopting a lower energy conformation (structural arrangement), the former molecular structure is said to have 'high lability' (such as C<sub>25</sub>, a 25-carbon [[fullerene]] spheroid). The term is sometimes also used in reference to reactivity – for example, a complex that quickly reaches [[chemical equilibrium|equilibrium]] in [[Solution (chemistry)|solution]] is said to be labile (with respect to that solution). Another common example is the [[cis effect|''cis'' effect]] in organometallic chemistry, which is the labilization of [[carbonyl ligand|CO ligands]] in the ''cis'' position of octahedral transition metal complexes. |
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== See also == |
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[[fr:Labilité]] |
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* [[Chemical stability]] |
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[[ru:Лабильность]] |
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* [[Equilibrium chemistry]] |
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[[uk:Лабільність]] |
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* [[Dynamic equilibrium]] |
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* [[Instability]] |
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* [[Metastability]] |
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* [[Reaction intermediate]] |
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* [[Emotional lability]] |
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== References == |
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{{Reflist}} |
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[[Category:Chemical reactions]] |
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Latest revision as of 17:03, 4 August 2024
Lability refers to something that is constantly undergoing change or is likely to undergo change. It is the opposite (antonym) of stability.
Biochemistry
[edit]In reference to biochemistry, this is an important concept as far as kinetics is concerned in metalloproteins. This can allow for the rapid synthesis and degradation of substrates in biological systems.
Biology
[edit]Cells
[edit]Labile cells refer to cells that constantly divide by entering and remaining in the cell cycle.[1] These are contrasted with "stable cells" and "permanent cells".
An important example of this is in the epithelium of the cornea, where cells divide at the basal level and move upwards, and the topmost cells die and fall off.
Proteins
[edit]In medicine, the term "labile" means susceptible to alteration or destruction. For example, a heat-labile protein is one that can be changed or destroyed at high temperatures.
The opposite of labile in this context is "stable".[2]
Soils
[edit]Compounds or materials that are easily transformed (often by biological activity) are termed labile. For example, labile phosphate is that fraction of soil phosphate that is readily transformed into soluble or plant-available phosphate.[3] Labile organic matter is the soil organic matter that is easily decomposed by microorganisms.[4]
Chemistry
[edit]The term is used to describe a transient chemical species. As a general example, if a molecule exists in a particular conformation for a short lifetime, before adopting a lower energy conformation (structural arrangement), the former molecular structure is said to have 'high lability' (such as C25, a 25-carbon fullerene spheroid). The term is sometimes also used in reference to reactivity – for example, a complex that quickly reaches equilibrium in solution is said to be labile (with respect to that solution). Another common example is the cis effect in organometallic chemistry, which is the labilization of CO ligands in the cis position of octahedral transition metal complexes.
See also
[edit]- Chemical stability
- Equilibrium chemistry
- Dynamic equilibrium
- Instability
- Metastability
- Reaction intermediate
- Emotional lability
References
[edit]- ^ "Regeneration and Repair". usc.edu. Archived from the original on 2008-11-28.
- ^ Jackson, C. J.; Fox, A. J.; Jones, D. M.; Wareing, D. R.; Hutchinson, D. N (August 1998). "Associations between heat-stable (O) and heat-labile (HL) serogroup antigens of Campylobacter jejuni: evidence for interstrain relationships within three O/HL serovars". Journal of Clinical Microbiology. 36 (8): 2223–2228. doi:10.1128/JCM.36.8.2223-2228.1998. PMC 105019. PMID 9665996.
- ^ Mattingly, G. E. G. (1975). "Labile phosphate in soils". Soil Science. 119 (5): 369. Bibcode:1975SoilS.119..369M. doi:10.1097/00010694-197505000-00007. S2CID 93102505.
- ^ "Can simple measures of labile soil organic matter predict corn performance?". ScienceDaily.com. Retrieved 29 August 2014.
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