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1ffc

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Revision as of 09:19, 27 December 2017

CONTRIBUTION OF CUTINASE SERINE 42 SIDE CHAIN TO THE STABILIZATION OF THE OXYANION TRANSITION STATE

Structural highlights

1ffc is a 1 chain structure with sequence from Fusso. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Activity:	Triacylglycerol lipase, with EC number 3.1.1.3
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[CUTI1_FUSSO] Catalyzes the hydrolysis of cutin, a polyester that forms the structure of plant cuticle. Allows pathogenic fungi to penetrate through the cuticular barrier into the host plant during the initial stage of the fungal infection.

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

Cutinase from the fungus Fusarium solani pisi is a lipolytic enzyme able to hydrolyze both aggregated and soluble substrates. It therefore provides a powerful tool for probing the mechanisms underlying lipid hydrolysis. Lipolytic enzymes have a catalytic machinery similar to those present in serine proteinases. It is characterized by the triad Ser, His, and Asp (Glu) residues, by an oxyanion binding site that stabilizes the transition state via hydrogen bonds with two main chain amide groups, and possibly by other determinants. It has been suggested on the basis of a covalently bond inhibitor that the cutinase oxyanion hole may consist not only of two main chain amide groups but also of the Ser42 O gamma side chain. Among the esterases and the serine and the cysteine proteases, only Streptomyces scabies esterase, subtilisin, and papain, respectively, have a side chain residue which is involved in the oxyanion hole formation. The position of the cutinase Ser42 side chain is structurally conserved in Rhizomucor miehei lipase with Ser82 O gamma, in Rhizopus delemar lipase with Thr83 O gamma 1, and in Candida antartica B lipase with Thr40 O gamma 1. To evaluate the increase in the tetrahedral intermediate stability provided by Ser42 O gamma, we mutated Ser42 into Ala. Furthermore, since the proper orientation of Ser42 O gamma is directed by Asn84, we mutated Asn84 into Ala, Leu, Asp, and Trp, respectively, to investigate the contribution of this indirect interaction to the stabilization of the oxyanion hole. The S42A mutation resulted in a drastic decrease in the activity (450-fold) without significantly perturbing the three-dimensional structure. The N84A and N84L mutations had milder kinetic effects and did not disrupt the structure of the active site, whereas the N84W and N84D mutations abolished the enzymatic activity due to drastic steric and electrostatic effects, respectively.

Contribution of cutinase serine 42 side chain to the stabilization of the oxyanion transition state.,Nicolas A, Egmond M, Verrips CT, de Vlieg J, Longhi S, Cambillau C, Martinez C Biochemistry. 1996 Jan 16;35(2):398-410. PMID:8555209^[1]

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

References

↑ Nicolas A, Egmond M, Verrips CT, de Vlieg J, Longhi S, Cambillau C, Martinez C. Contribution of cutinase serine 42 side chain to the stabilization of the oxyanion transition state. Biochemistry. 1996 Jan 16;35(2):398-410. PMID:8555209 doi:http://dx.doi.org/10.1021/bi9515578

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/1ffc"

Categories: Fusso | Triacylglycerol lipase | Cambillau, C | Martinez, C | Nicolas, A

@@ Line 1: / Line 1: @@
 ==CONTRIBUTION OF CUTINASE SERINE 42 SIDE CHAIN TO THE STABILIZATION OF THE OXYANION TRANSITION STATE==
 <StructureSection load='1ffc' size='340' side='right' caption='[[1ffc]], [[Resolution|resolution]] 1.75&Aring;' scene=''>
@@ Line 4: / Line 5: @@
 <table><tr><td colspan='2'>[[1ffc]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Fusso Fusso]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FFC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1FFC FirstGlance]. <br>
 </td></tr><tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Triacylglycerol_lipase Triacylglycerol lipase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.1.3 3.1.1.3] </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=1ffc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ffc OCA], [http://pdbe.org/1ffc PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ffc RCSB], [http://www.ebi.ac.uk/pdbsum/1ffc 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=1ffc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ffc OCA], [http://pdbe.org/1ffc PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ffc RCSB], [http://www.ebi.ac.uk/pdbsum/1ffc PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1ffc ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 12: / Line 13: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ff/1ffc_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ff/1ffc_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>

1ffc

From Proteopedia

Revision as of 09:19, 27 December 2017

CONTRIBUTION OF CUTINASE SERINE 42 SIDE CHAIN TO THE STABILIZATION OF THE OXYANION TRANSITION STATE

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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