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==Human obesity protein, leptin==
==Human obesity protein, leptin==
<StructureSection load='1ax8' size='340' side='right' caption='[[1ax8]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
<StructureSection load='1ax8' size='340' side='right'caption='[[1ax8]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1ax8]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. The May 2012 RCSB PDB [http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Leptin''  by David Goodsell is [http://dx.doi.org/10.2210/rcsb_pdb/mom_2012_5 10.2210/rcsb_pdb/mom_2012_5]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1AX8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1AX8 FirstGlance]. <br>
<table><tr><td colspan='2'>[[1ax8]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. The May 2012 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Leptin''  by David Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2012_5 10.2210/rcsb_pdb/mom_2012_5]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1AX8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1AX8 FirstGlance]. <br>
</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">OBESE GENE ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.4&#8491;</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ax8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ax8 OCA], [http://pdbe.org/1ax8 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ax8 RCSB], [http://www.ebi.ac.uk/pdbsum/1ax8 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1ax8 ProSAT]</span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1ax8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ax8 OCA], [https://pdbe.org/1ax8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ax8 RCSB], [https://www.ebi.ac.uk/pdbsum/1ax8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ax8 ProSAT]</span></td></tr>
</table>
</table>
== Disease ==
== Disease ==
[[http://www.uniprot.org/uniprot/LEP_HUMAN LEP_HUMAN]] Defects in LEP may be a cause of obesity (OBESITY) [MIM:[http://omim.org/entry/601665 601665]]. It is a condition characterized by an increase of body weight beyond the limitation of skeletal and physical requirements, as the result of excessive accumulation of body fat.<ref>PMID:9500540</ref>
[https://www.uniprot.org/uniprot/LEP_HUMAN LEP_HUMAN] Defects in LEP may be a cause of obesity (OBESITY) [MIM:[https://omim.org/entry/601665 601665]. It is a condition characterized by an increase of body weight beyond the limitation of skeletal and physical requirements, as the result of excessive accumulation of body fat.<ref>PMID:9500540</ref>  
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/LEP_HUMAN LEP_HUMAN]] May function as part of a signaling pathway that acts to regulate the size of the body fat depot. An increase in the level of LEP may act directly or indirectly on the CNS to inhibit food intake and/or regulate energy expenditure as part of a homeostatic mechanism to maintain constancy of the adipose mass.  
[https://www.uniprot.org/uniprot/LEP_HUMAN LEP_HUMAN] May function as part of a signaling pathway that acts to regulate the size of the body fat depot. An increase in the level of LEP may act directly or indirectly on the CNS to inhibit food intake and/or regulate energy expenditure as part of a homeostatic mechanism to maintain constancy of the adipose mass.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ax/1ax8_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ax/1ax8_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
     <text>to colour the structure by Evolutionary Conservation</text>
Line 21: Line 21:
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1ax8 ConSurf].
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1ax8 ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Mutations in the obese gene (OB) or in the gene encoding the OB receptor(OB-R) result in obesity, infertility and diabetes in a variety of mouse phenotypes. The demonstration that OB protein (also known as leptin) can normalize body weight in ob/ob mice has generated enormous interest. Most human obesity does not appear to result from a mutant form of leptin: rather, serum leptin concentrations are increased and there is an apparent inability to transport it to the central nervous system (CNS). Injection of leptin into the CNS of overfed rodents resistant to peripheral administration was found to induce biological activity. Consequently, for the leptin to act as a weight-lowering hormone in human obesity, it appears that appropriate concentrations must be present in the CNS. This places a premium on understanding the structure of the hormone in order to design more potent and selective agonists. Here we report the crystal structure at 2.4A resolution of a human mutant OB protein (leptin-E100) that has comparable biological activity to wild type but which crystallizes more readily. The structure reveals a four-helix bundle similar to that of the long-chain helical cytokine family.
Crystal structure of the obese protein leptin-E100.,Zhang F, Basinski MB, Beals JM, Briggs SL, Churgay LM, Clawson DK, DiMarchi RD, Furman TC, Hale JE, Hsiung HM, Schoner BE, Smith DP, Zhang XY, Wery JP, Schevitz RW Nature. 1997 May 8;387(6629):206-9. PMID:9144295<ref>PMID:9144295</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1ax8" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[User:Wayne Decatur/Flock house virus B2 protein Suppression of RNA Silencing|User:Wayne Decatur/Flock house virus B2 protein Suppression of RNA Silencing]]
*[[Flock house virus protein B2|Flock house virus protein B2]]
*[[User:Mary Ball/Leptin|User:Mary Ball/Leptin]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Human]]
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Leptin]]
[[Category: Leptin]]
[[Category: RCSB PDB Molecule of the Month]]
[[Category: RCSB PDB Molecule of the Month]]
[[Category: Beals, J M]]
[[Category: Beals JM]]
[[Category: Briggs, S L]]
[[Category: Briggs SL]]
[[Category: Clawson, D K]]
[[Category: Clawson DK]]
[[Category: Schevitz, R W]]
[[Category: Schevitz RW]]
[[Category: Wery, J P]]
[[Category: Wery J-P]]
[[Category: Zhang, F]]
[[Category: Zhang F]]
[[Category: Cytokine]]
[[Category: Diabetes]]
[[Category: Helical cytokine]]
[[Category: Hematopoietic factor]]
[[Category: Obesity]]

Latest revision as of 18:29, 13 March 2024

Human obesity protein, leptinHuman obesity protein, leptin

Structural highlights

1ax8 is a 1 chain structure with sequence from Homo sapiens. The May 2012 RCSB PDB Molecule of the Month feature on Leptin by David Goodsell is 10.2210/rcsb_pdb/mom_2012_5. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.4Å
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

LEP_HUMAN Defects in LEP may be a cause of obesity (OBESITY) [MIM:601665. It is a condition characterized by an increase of body weight beyond the limitation of skeletal and physical requirements, as the result of excessive accumulation of body fat.[1]

Function

LEP_HUMAN May function as part of a signaling pathway that acts to regulate the size of the body fat depot. An increase in the level of LEP may act directly or indirectly on the CNS to inhibit food intake and/or regulate energy expenditure as part of a homeostatic mechanism to maintain constancy of the adipose mass.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

See Also

References

  1. ↑ Strobel A, Issad T, Camoin L, Ozata M, Strosberg AD. A leptin missense mutation associated with hypogonadism and morbid obesity. Nat Genet. 1998 Mar;18(3):213-5. PMID:9500540 doi:10.1038/ng0398-213

1ax8, resolution 2.40Å

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