1l35

From Proteopedia

(Difference between revisions)

Revision as of 06:42, 29 November 2017

STRUCTURE OF A THERMOSTABLE DISULFIDE-BRIDGE MUTANT OF PHAGE T4 LYSOZYME SHOWS THAT AN ENGINEERED CROSSLINK IN A FLEXIBLE REGION DOES NOT INCREASE THE RIGIDITY OF THE FOLDED PROTEIN

Structural highlights

1l35 is a 1 chain structure with sequence from Bpt4. The September 2000 RCSB PDB Molecule of the Month feature on Lysozyme by David S. Goodsell is 10.2210/rcsb_pdb/mom_2000_9. 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, 1l25, 1l26, 1l27, 1l28, 1l29, 1l30, 1l31, 1l32, 1l33, 1l34, 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

A disulfide bond introduced between amino acid positions 9 and 164 in phage T4 lysozyme has been shown to significantly increase the stability of the enzyme toward thermal denaturation [Matsumura, M., Becktel, W.J., Levitt, M., & Matthews, B. W. (1989) Proc. Natl. Acad. Sci. U.S.A. 86, 6562-6566]. To elucidate the structural features of the engineered disulfide, the crystal structure of the disulfide mutant has been determined at 1.8-A resolution. Residue 9 lies in the N-terminal alpha-helix, while residue 164 is located at the extreme C terminus of T4 lysozyme, which is the most mobile part of the molecule. The refined structure shows that the formation of the disulfide bond is accompanied by relatively large (approximately 2.5 A) localized shifts in C-terminal main-chain atoms. Comparison of the geometry of the engineered disulfide with those of naturally observed disulfides in proteins shows that the engineered bridge adopts a left-handed spiral conformation with a typical set of dihedral angles and C alpha-C alpha distance. The geometry of the engineered disulfide suggests that it is slightly more strained than the disulfide of oxidized dithiothreitol but that the strain is within the range observed in naturally occurring disulfides. The wild-type and cross-linked lysozymes have very similar overall crystallographic temperature factors, indicating that the introduction of the disulfide bond does not impose rigidity on the folded protein structure. In particular, residues 162-164 retain high mobility in the mutant structure, consistent with the idea that stabilization of the protein is due to the effect of the disulfide cross-link on the unfolded rather than the folded state.(ABSTRACT TRUNCATED AT 250 WORDS)

Structure of a thermostable disulfide-bridge mutant of phage T4 lysozyme shows that an engineered cross-link in a flexible region does not increase the rigidity of the folded protein.,Pjura PE, Matsumura M, Wozniak JA, Matthews BW Biochemistry. 1990 Mar 13;29(10):2592-8. PMID:2334683^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Pjura PE, Matsumura M, Wozniak JA, Matthews BW. Structure of a thermostable disulfide-bridge mutant of phage T4 lysozyme shows that an engineered cross-link in a flexible region does not increase the rigidity of the folded protein. Biochemistry. 1990 Mar 13;29(10):2592-8. PMID:2334683

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/1l35"

@@ Line 1: / Line 1: @@
 ==STRUCTURE OF A THERMOSTABLE DISULFIDE-BRIDGE MUTANT OF PHAGE T4 LYSOZYME SHOWS THAT AN ENGINEERED CROSSLINK IN A FLEXIBLE REGION DOES NOT INCREASE THE RIGIDITY OF THE FOLDED PROTEIN==
 <StructureSection load='1l35' size='340' side='right' caption='[[1l35]], [[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]], [[1l25|1l25]], [[1l26|1l26]], [[1l27|1l27]], [[1l28|1l28]], [[1l29|1l29]], [[1l30|1l30]], [[1l31|1l31]], [[1l32|1l32]], [[1l33|1l33]], [[1l34|1l34]], [[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=1l35 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1l35 OCA], [http://pdbe.org/1l35 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1l35 RCSB], [http://www.ebi.ac.uk/pdbsum/1l35 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=1l35 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1l35 OCA], [http://pdbe.org/1l35 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1l35 RCSB], [http://www.ebi.ac.uk/pdbsum/1l35 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1l35 ProSAT]</span></td></tr>
 </table>
 == Function ==

1l35

From Proteopedia

Revision as of 06:42, 29 November 2017

STRUCTURE OF A THERMOSTABLE DISULFIDE-BRIDGE MUTANT OF PHAGE T4 LYSOZYME SHOWS THAT AN ENGINEERED CROSSLINK IN A FLEXIBLE REGION DOES NOT INCREASE THE RIGIDITY OF THE FOLDED PROTEIN

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

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