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< | ==LEUKAEMIA INHIBITORY FACTOR CHIMERA (MH35-LIF), NMR, 20 STRUCTURES== | ||
<StructureSection load='1a7m' size='340' side='right'caption='[[1a7m]]' scene=''> | |||
You may | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1a7m]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A7M OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1A7M FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR, 20 models</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=1a7m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a7m OCA], [https://pdbe.org/1a7m PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1a7m RCSB], [https://www.ebi.ac.uk/pdbsum/1a7m PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1a7m ProSAT]</span></td></tr> | ||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/LIF_MOUSE LIF_MOUSE] LIF has the capacity to induce terminal differentiation in leukemic cells. Its activities include the induction of hematopoietic differentiation in normal and myeloid leukemia cells, the induction of neuronal cell differentiation, and the stimulation of acute-phase protein synthesis in hepatocytes. | |||
== 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/a7/1a7m_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=1a7m ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The solution structure of a murine-human chimera of leukemia inhibitory factor (LIF), a 180-residue cytokine with a molecular mass of 20 kDa, has been determined using multidimensional heteronuclear NMR techniques. The protein contains four alpha-helices, the relative orientations of which are well defined on the basis of long-range interhelical nuclear Overhauser effects. The helices are arranged in an up-up-down-down orientation, as found in other four-helix bundle cytokines, and the overall topology of the chimera is similar to that of the crystal structure of murine LIF (Robinson, R. C., Grey, L. M., Staunton, D., Vankelecom, H. Vernallis, A. B., Moreau, J. F., Stuart, D. I., Heath, J. K., and Jones, E. Y. (1994) Cell 77, 1101-1116). Differences between the structures are evident in the N-terminal region, where the peptide bond preceding Pro17 has a trans-conformation in solution but a cis-conformation in the crystal, and in the small antiparallel beta-sheet encompassing residues in the N terminus and the CD loop in the crystal structure, which is not apparent in solution. There are also minor differences in the extent of the helices. Other than at the N terminus, the main difference between the two structures occurs at the C-terminal end of the CD loop. As this loop is close to a receptor-binding site on LIF that makes a major contribution to high affinity binding to the LIF receptor alpha-chain, these differences between the solution and crystal structures should be taken into account in structural models of LIF receptor interactions. | |||
Solution structure of leukemia inhibitory factor.,Hinds MG, Maurer T, Zhang JG, Nicola NA, Norton RS J Biol Chem. 1998 May 29;273(22):13738-45. PMID:9593715<ref>PMID:9593715</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1a7m" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Flock house virus protein B2|Flock house virus protein B2]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | [[Category: Large Structures]] | ||
== | |||
< | |||
[[Category: Mus musculus]] | [[Category: Mus musculus]] | ||
[[Category: Hinds | [[Category: Hinds MG]] | ||
[[Category: Maurer | [[Category: Maurer T]] | ||
[[Category: Nicola | [[Category: Nicola NA]] | ||
[[Category: Norton | [[Category: Norton RS]] | ||
[[Category: Zhang | [[Category: Zhang J-G]] | ||
Latest revision as of 07:22, 17 October 2024
LEUKAEMIA INHIBITORY FACTOR CHIMERA (MH35-LIF), NMR, 20 STRUCTURESLEUKAEMIA INHIBITORY FACTOR CHIMERA (MH35-LIF), NMR, 20 STRUCTURES
Structural highlights
FunctionLIF_MOUSE LIF has the capacity to induce terminal differentiation in leukemic cells. Its activities include the induction of hematopoietic differentiation in normal and myeloid leukemia cells, the induction of neuronal cell differentiation, and the stimulation of acute-phase protein synthesis in hepatocytes. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe solution structure of a murine-human chimera of leukemia inhibitory factor (LIF), a 180-residue cytokine with a molecular mass of 20 kDa, has been determined using multidimensional heteronuclear NMR techniques. The protein contains four alpha-helices, the relative orientations of which are well defined on the basis of long-range interhelical nuclear Overhauser effects. The helices are arranged in an up-up-down-down orientation, as found in other four-helix bundle cytokines, and the overall topology of the chimera is similar to that of the crystal structure of murine LIF (Robinson, R. C., Grey, L. M., Staunton, D., Vankelecom, H. Vernallis, A. B., Moreau, J. F., Stuart, D. I., Heath, J. K., and Jones, E. Y. (1994) Cell 77, 1101-1116). Differences between the structures are evident in the N-terminal region, where the peptide bond preceding Pro17 has a trans-conformation in solution but a cis-conformation in the crystal, and in the small antiparallel beta-sheet encompassing residues in the N terminus and the CD loop in the crystal structure, which is not apparent in solution. There are also minor differences in the extent of the helices. Other than at the N terminus, the main difference between the two structures occurs at the C-terminal end of the CD loop. As this loop is close to a receptor-binding site on LIF that makes a major contribution to high affinity binding to the LIF receptor alpha-chain, these differences between the solution and crystal structures should be taken into account in structural models of LIF receptor interactions. Solution structure of leukemia inhibitory factor.,Hinds MG, Maurer T, Zhang JG, Nicola NA, Norton RS J Biol Chem. 1998 May 29;273(22):13738-45. PMID:9593715[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences |
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