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==REPLACEMENTS OF PRO86 IN PHAGE T4 LYSOZYME EXTEND AN ALPHA-HELIX BUT DO NOT ALTER PROTEIN STABILITY== | ==REPLACEMENTS OF PRO86 IN PHAGE T4 LYSOZYME EXTEND AN ALPHA-HELIX BUT DO NOT ALTER PROTEIN STABILITY== | ||
<StructureSection load='1l32' size='340' side='right' caption='[[1l32]], [[Resolution|resolution]] 1.70Å' scene=''> | <StructureSection load='1l32' size='340' side='right' caption='[[1l32]], [[Resolution|resolution]] 1.70Å' scene=''> | ||
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</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2lzm|2lzm]], [[1l01|1l01]], [[1l02|1l02]], [[1l03|1l03]], [[1l04|1l04]], [[1l05|1l05]], [[1l06|1l06]], [[1l07|1l07]], [[1l08|1l08]], [[1l09|1l09]], [[1l10|1l10]], [[1l11|1l11]], [[1l12|1l12]], [[1l13|1l13]], [[1l14|1l14]], [[1l15|1l15]], [[1l16|1l16]], [[1l17|1l17]], [[1l18|1l18]], [[1l19|1l19]], [[1l20|1l20]], [[1l21|1l21]], [[1l22|1l22]], [[1l23|1l23]], [[1l24|1l24]], [[1l25|1l25]], [[1l26|1l26]], [[1l27|1l27]], [[1l28|1l28]], [[1l29|1l29]], [[1l30|1l30]], [[1l31|1l31]], [[1l33|1l33]], [[1l34|1l34]], [[1l35|1l35]], [[1l36|1l36]]</td></tr> | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2lzm|2lzm]], [[1l01|1l01]], [[1l02|1l02]], [[1l03|1l03]], [[1l04|1l04]], [[1l05|1l05]], [[1l06|1l06]], [[1l07|1l07]], [[1l08|1l08]], [[1l09|1l09]], [[1l10|1l10]], [[1l11|1l11]], [[1l12|1l12]], [[1l13|1l13]], [[1l14|1l14]], [[1l15|1l15]], [[1l16|1l16]], [[1l17|1l17]], [[1l18|1l18]], [[1l19|1l19]], [[1l20|1l20]], [[1l21|1l21]], [[1l22|1l22]], [[1l23|1l23]], [[1l24|1l24]], [[1l25|1l25]], [[1l26|1l26]], [[1l27|1l27]], [[1l28|1l28]], [[1l29|1l29]], [[1l30|1l30]], [[1l31|1l31]], [[1l33|1l33]], [[1l34|1l34]], [[1l35|1l35]], [[1l36|1l36]]</td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Lysozyme Lysozyme], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.17 3.2.1.17] </span></td></tr> | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Lysozyme Lysozyme], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.17 3.2.1.17] </span></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=1l32 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1l32 OCA], [http://pdbe.org/1l32 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1l32 RCSB], [http://www.ebi.ac.uk/pdbsum/1l32 PDBsum]</span></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=1l32 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1l32 OCA], [http://pdbe.org/1l32 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1l32 RCSB], [http://www.ebi.ac.uk/pdbsum/1l32 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1l32 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
Revision as of 09:42, 29 November 2017
REPLACEMENTS OF PRO86 IN PHAGE T4 LYSOZYME EXTEND AN ALPHA-HELIX BUT DO NOT ALTER PROTEIN STABILITYREPLACEMENTS OF PRO86 IN PHAGE T4 LYSOZYME EXTEND AN ALPHA-HELIX BUT DO NOT ALTER PROTEIN STABILITY
Structural highlights
Function[LYS_BPT4] Helps to release the mature phage particles from the cell wall by breaking down the peptidoglycan. 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 PubMedTo investigate the relation between protein stability and the predicted stabilities of individual secondary structural elements, residue Pro86 in an alpha-helix in phage T4 lysozyme was replaced by ten different amino acids. The x-ray crystal structures of seven of the mutant lysozymes were determined at high resolution. In each case, replacement of the proline resulted in the formation of an extended alpha-helix. This involves a large conformational change in residues 81 to 83 and smaller shifts that extend 20 angstroms across the protein surface. Unexpectedly, all ten amino acid substitutions marginally reduce protein thermostability. This insensitivity of stability to the amino acid at position 86 is not simply explained by statistical and thermodynamic criteria for helical propensity. The observed conformational changes illustrate a general mechanism by which proteins can tolerate mutations. Replacements of Pro86 in phage T4 lysozyme extend an alpha-helix but do not alter protein stability.,Alber T, Bell JA, Sun DP, Nicholson H, Wozniak JA, Cook S, Matthews BW Science. 1988 Feb 5;239(4840):631-5. PMID:3277275[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences |
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