1lph: Difference between revisions

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[[Image:1lph.gif|left|200px]]<br />
<applet load="1lph" size="450" color="white" frame="true" align="right" spinBox="true"
caption="1lph, resolution 2.3&Aring;" />
'''LYS(B28)PRO(B29)-HUMAN INSULIN'''<br />


==Overview==
==LYS(B28)PRO(B29)-HUMAN INSULIN==
BACKGROUND: LysB28ProB29-human insulin (Humalog), a fully potent insulin, analog in which the prolyl, lysyl sequence at the C-terminal end of the, B-chain is inverted, exhibits a decreased association of monomers to, dimers leading to rapid in vivo absorption. This provides important, benefits for the insulin-requiring diabetic. In spite of its monomeric, nature, LysB28ProB29-human insulin can exist as a discrete hexameric, structure in the presence of both zinc and phenol. Studies of the crystal, structure of LysB28ProB29-human insulin in a hexameric complex were, initiated to gain a molecular understanding of the effect of the sequence, inversion on the analog's self-association properties and, consequently, its in vivo efficacy. RESULTS: Under the conditions reported, ... [[http://ispc.weizmann.ac.il/pmbin/getpm?8590022 (full description)]]
<StructureSection load='1lph' size='340' side='right'caption='[[1lph]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1lph]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. The February 2016 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Designer Insulins''  by David Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2016_2 10.2210/rcsb_pdb/mom_2016_2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LPH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1LPH FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.3&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=IPH:PHENOL'>IPH</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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=1lph FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1lph OCA], [https://pdbe.org/1lph PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1lph RCSB], [https://www.ebi.ac.uk/pdbsum/1lph PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1lph ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/INS_HUMAN INS_HUMAN] Defects in INS are the cause of familial hyperproinsulinemia (FHPRI) [MIM:[https://omim.org/entry/176730 176730].<ref>PMID:3470784</ref> <ref>PMID:2196279</ref> <ref>PMID:4019786</ref> <ref>PMID:1601997</ref>  Defects in INS are a cause of diabetes mellitus insulin-dependent type 2 (IDDM2) [MIM:[https://omim.org/entry/125852 125852]. IDDM2 is a multifactorial disorder of glucose homeostasis that is characterized by susceptibility to ketoacidosis in the absence of insulin therapy. Clinical fetaures are polydipsia, polyphagia and polyuria which result from hyperglycemia-induced osmotic diuresis and secondary thirst. These derangements result in long-term complications that affect the eyes, kidneys, nerves, and blood vessels.<ref>PMID:18192540</ref>  Defects in INS are a cause of diabetes mellitus permanent neonatal (PNDM) [MIM:[https://omim.org/entry/606176 606176]. PNDM is a rare form of diabetes distinct from childhood-onset autoimmune diabetes mellitus type 1. It is characterized by insulin-requiring hyperglycemia that is diagnosed within the first months of life. Permanent neonatal diabetes requires lifelong therapy.<ref>PMID:17855560</ref> <ref>PMID:18162506</ref>  Defects in INS are a cause of maturity-onset diabetes of the young type 10 (MODY10) [MIM:[https://omim.org/entry/613370 613370]. MODY10 is a form of diabetes that is characterized by an autosomal dominant mode of inheritance, onset in childhood or early adulthood (usually before 25 years of age), a primary defect in insulin secretion and frequent insulin-independence at the beginning of the disease.<ref>PMID:18192540</ref> <ref>PMID:18162506</ref> <ref>PMID:20226046</ref>
== Function ==
[https://www.uniprot.org/uniprot/INS_HUMAN INS_HUMAN] Insulin decreases blood glucose concentration. It increases cell permeability to monosaccharides, amino acids and fatty acids. It accelerates glycolysis, the pentose phosphate cycle, and glycogen synthesis in liver.
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/lp/1lph_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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=1lph ConSurf].
<div style="clear:both"></div>


==About this Structure==
==See Also==
1LPH is a [[http://en.wikipedia.org/wiki/Protein_complex Protein complex]] structure of sequences from [[http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]] with ZN, CL and IPH as [[http://en.wikipedia.org/wiki/ligands ligands]]. Structure known Active Site: 1. Full crystallographic information is available from [[http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1LPH OCA]].
*[[Insulin 3D Structures|Insulin 3D Structures]]
 
== References ==
==Reference==
<references/>
Role of C-terminal B-chain residues in insulin assembly: the structure of hexameric LysB28ProB29-human insulin., Ciszak E, Beals JM, Frank BH, Baker JC, Carter ND, Smith GD, Structure. 1995 Jun 15;3(6):615-22. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=8590022 8590022]
__TOC__
</StructureSection>
[[Category: Designer Insulins]]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Protein complex]]
[[Category: Large Structures]]
[[Category: Baker, J.C.]]
[[Category: RCSB PDB Molecule of the Month]]
[[Category: Beals, J.M.]]
[[Category: Baker JC]]
[[Category: Carter, N.D.]]
[[Category: Beals JM]]
[[Category: Ciszak, E.]]
[[Category: Carter ND]]
[[Category: Frank, B.H.]]
[[Category: Ciszak E]]
[[Category: Smith, G.D.]]
[[Category: Frank BH]]
[[Category: CL]]
[[Category: Smith GD]]
[[Category: IPH]]
[[Category: ZN]]
[[Category: glucose metabolism]]
[[Category: hormone]]
[[Category: insulin analogue]]
 
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