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1l25

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Revision as of 06:41, 29 November 2017

REPLACEMENTS OF PRO86 IN PHAGE T4 LYSOZYME EXTEND AN ALPHA-HELIX BUT DO NOT ALTER PROTEIN STABILITY

Structural highlights

1l25 is a 1 chain structure with sequence from Bpt4. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	2lzm, 1l01, 1l02, 1l03, 1l04, 1l05, 1l06, 1l07, 1l08, 1l09, 1l10, 1l11, 1l12, 1l13, 1l14, 1l15, 1l16, 1l17, 1l18, 1l19, 1l20, 1l21, 1l22, 1l23, 1l24, 1l26, 1l27, 1l28, 1l29, 1l30, 1l31, 1l32, 1l33, 1l34, 1l35, 1l36
Activity:	Lysozyme, with EC number 3.2.1.17
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

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 PubMed

To 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.

References

↑ Alber T, Bell JA, Sun DP, Nicholson H, Wozniak JA, Cook S, Matthews BW. Replacements of Pro86 in phage T4 lysozyme extend an alpha-helix but do not alter protein stability. Science. 1988 Feb 5;239(4840):631-5. PMID:3277275

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1l25"

Categories: Bpt4 | Lysozyme | Bell, J A | Dao-Pin, S | Matthews, B W

@@ Line 1: / Line 1: @@
 ==REPLACEMENTS OF PRO86 IN PHAGE T4 LYSOZYME EXTEND AN ALPHA-HELIX BUT DO NOT ALTER PROTEIN STABILITY==
 <StructureSection load='1l25' size='340' side='right' caption='[[1l25]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </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]], [[1l26|1l26]], [[1l27|1l27]], [[1l28|1l28]], [[1l29|1l29]], [[1l30|1l30]], [[1l31|1l31]], [[1l32|1l32]], [[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='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=1l25 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1l25 OCA], [http://pdbe.org/1l25 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1l25 RCSB], [http://www.ebi.ac.uk/pdbsum/1l25 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=1l25 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1l25 OCA], [http://pdbe.org/1l25 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1l25 RCSB], [http://www.ebi.ac.uk/pdbsum/1l25 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1l25 ProSAT]</span></td></tr>
 </table>
 == Function ==

1l25

From Proteopedia

Revision as of 06:41, 29 November 2017

REPLACEMENTS OF PRO86 IN PHAGE T4 LYSOZYME EXTEND AN ALPHA-HELIX BUT DO NOT ALTER PROTEIN STABILITY

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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