4j0l: Difference between revisions

Latest revision as of 14:18, 8 November 2023

Crystal Structure of a Family GH19 Chitinase (W72A/E67Q mutant) from rye seeds in complex with two (GlcNAc)4 molecules

Structural highlights

4j0l is a 1 chain structure with sequence from Secale cereale. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.9Å
Ligands:	EDO, NAG, SO4
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CHIC_SECCE Defense against chitin containing fungal pathogens. Binds the hyphal tips of fungi and degrades nascent chitin.^[1] ^[2] ^[3]

Publication Abstract from PubMed

Crystallographic analysis of a mutated form of "loopful" GH19 chitinase from rye seeds a double mutant RSC-c, in which Glu67 and Trp72 are mutated to glutamine and alanine, respectively, (RSC-c-E67Q/W72A) in complex with chitin tetrasaccharide (GlcNAc)(4) revealed that the entire substrate-binding cleft was completely occupied with the sugar residues of two (GlcNAc)(4) molecules. One (GlcNAc)(4) molecule bound to subsites -4 to -1, while the other bound to subsites +1 to +4. Comparisons of the main chain conformation between liganded RSC-c-E67Q/W72A and unliganded wild type RSC-c suggested domain motion essential for catalysis. This is the first report on the complete subsite mapping of GH19 chitinase.

Complete subsite mapping of a "loopful" GH19 chitinase from rye seeds based on its crystal structure.,Ohnuma T, Umemoto N, Kondo K, Numata T, Fukamizo T FEBS Lett. 2013 Aug 19;587(16):2691-7. doi: 10.1016/j.febslet.2013.07.008. Epub, 2013 Jul 18. PMID:23871710^[4]

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

References

↑ Ohnuma T, Yagi M, Yamagami T, Taira T, Aso Y, Ishiguro M. Molecular cloning, functional expression, and mutagenesis of cDNA encoding rye (Secale cereale) seed chitinase-c. Biosci Biotechnol Biochem. 2002 Feb;66(2):277-84. PMID:11999399
↑ Taira T, Yamagami T, Aso Y, Ishiguro M, Ishihara M. Localization, accumulation, and antifungal activity of chitinases in rye (Secale cereale) seed. Biosci Biotechnol Biochem. 2001 Dec;65(12):2710-8. PMID:11826968
↑ Taira T, Ohnuma T, Yamagami T, Aso Y, Ishiguro M, Ishihara M. Antifungal activity of rye (Secale cereale) seed chitinases: the different binding manner of class I and class II chitinases to the fungal cell walls. Biosci Biotechnol Biochem. 2002 May;66(5):970-7. PMID:12092848
↑ Ohnuma T, Umemoto N, Kondo K, Numata T, Fukamizo T. Complete subsite mapping of a "loopful" GH19 chitinase from rye seeds based on its crystal structure. FEBS Lett. 2013 Aug 19;587(16):2691-7. doi: 10.1016/j.febslet.2013.07.008. Epub, 2013 Jul 18. PMID:23871710 doi:https://dx.doi.org/10.1016/j.febslet.2013.07.008

Proteopedia Page Contributors and Editors (what is this?)

OCA

[1] Ohnuma T, Yagi M, Yamagami T, Taira T, Aso Y, Ishiguro M. Molecular cloning, functional expression, and mutagenesis of cDNA encoding rye (Secale cereale) seed chitinase-c. Biosci Biotechnol Biochem. 2002 Feb;66(2):277-84. PMID:11999399

[2] Taira T, Yamagami T, Aso Y, Ishiguro M, Ishihara M. Localization, accumulation, and antifungal activity of chitinases in rye (Secale cereale) seed. Biosci Biotechnol Biochem. 2001 Dec;65(12):2710-8. PMID:11826968

[3] Taira T, Ohnuma T, Yamagami T, Aso Y, Ishiguro M, Ishihara M. Antifungal activity of rye (Secale cereale) seed chitinases: the different binding manner of class I and class II chitinases to the fungal cell walls. Biosci Biotechnol Biochem. 2002 May;66(5):970-7. PMID:12092848

[4] Ohnuma T, Umemoto N, Kondo K, Numata T, Fukamizo T. Complete subsite mapping of a "loopful" GH19 chitinase from rye seeds based on its crystal structure. FEBS Lett. 2013 Aug 19;587(16):2691-7. doi: 10.1016/j.febslet.2013.07.008. Epub, 2013 Jul 18. PMID:23871710 doi:https://dx.doi.org/10.1016/j.febslet.2013.07.008

[1]

[2]

[3]

[4]

@@ Line 4: / Line 4: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[4j0l]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Secale_cereale Secale cereale]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4J0L OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4J0L FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></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=4j0l FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4j0l OCA], [https://pdbe.org/4j0l PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4j0l RCSB], [https://www.ebi.ac.uk/pdbsum/4j0l PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4j0l ProSAT]</span></td></tr>
 </table>

4j0l: Difference between revisions

Latest revision as of 14:18, 8 November 2023

Crystal Structure of a Family GH19 Chitinase (W72A/E67Q mutant) from rye seeds in complex with two (GlcNAc)4 molecules

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Navigation menu

Page actions

Page actions

Personal tools

Navigation

Search

Tools