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2zr1

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Revision as of 06:14, 16 October 2019

Agglutinin from Abrus Precatorius

Structural highlights

2zr1 is a 4 chain structure with sequence from Abrus precatorius. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	2q3n, 1abr
Activity:	rRNA N-glycosylase, with EC number 3.2.2.22
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[AGGL_ABRPR] The A chain is responsible for inhibiting protein synthesis through the catalytic inactivation of 60S ribosomal subunits by removing adenine from position 4,324 of 28S rRNA (By similarity). Less toxic than abrin-a.^[1] [UniProtKB:P28590] The B chain is a galactose-specific lectin that facilitates the binding to the cell membrane that precedes endocytosis (By similarity).^[2] [UniProtKB:P28590]

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

X-ray crystal structure determination of agglutinin from Abrus precatorius in Taiwan is presented. The crystal structure of agglutinin, a type II ribosome-inactivating protein (RIP) from the seeds of Abrus precatorius in Taiwan, has been determined from a novel crystalline form by the molecular replacement method using the coordinates of abrin-a as the template. The structure has space group P4(1)2(1)2 with Z = 8, and been refined at 2.6 A to R-factor of 20.4%. The root-mean-square deviations of bond lengths and angles from the standard values are 0.009 A and 1.3 degrees. Primary, secondary, tertiary and quaternary structures of agglutinin have been described and compared with those of abrin-a to a certain extent. In subsequent docking research, we found that Asn200 of abrin-a may form a critical hydrogen bond with G4323 of 28SRNA, while corresponding Pro199 of agglutinin is a kink hydrophobic residue bound with the cleft in a more compact complementary relationship. This may explain the lower toxicity of agglutinin than abrin-a, despite of similarity in secondary structure and the activity cleft of two RIPs.

A biophysical elucidation for less toxicity of agglutinin than abrin-a from the seeds of Abrus precatorius in consequence of crystal structure.,Cheng J, Lu TH, Liu CL, Lin JY J Biomed Sci. 2010 Apr 30;17:34. PMID:20433687^[3]

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

References

↑ Liu CL, Tsai CC, Lin SC, Wang LI, Hsu CI, Hwang MJ, Lin JY. Primary structure and function analysis of the Abrus precatorius agglutinin A chain by site-directed mutagenesis. Pro(199) Of amphiphilic alpha-helix H impairs protein synthesis inhibitory activity. J Biol Chem. 2000 Jan 21;275(3):1897-901. PMID:10636890
↑ Liu CL, Tsai CC, Lin SC, Wang LI, Hsu CI, Hwang MJ, Lin JY. Primary structure and function analysis of the Abrus precatorius agglutinin A chain by site-directed mutagenesis. Pro(199) Of amphiphilic alpha-helix H impairs protein synthesis inhibitory activity. J Biol Chem. 2000 Jan 21;275(3):1897-901. PMID:10636890
↑ Cheng J, Lu TH, Liu CL, Lin JY. A biophysical elucidation for less toxicity of agglutinin than abrin-a from the seeds of Abrus precatorius in consequence of crystal structure. J Biomed Sci. 2010 Apr 30;17:34. PMID:20433687 doi:10.1186/1423-0127-17-34

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/2zr1"

@@ Line 3: / Line 3: @@
 <StructureSection load='2zr1' size='340' side='right'caption='[[2zr1]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2zr1]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Abrpr Abrpr]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ZR1 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ZR1 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2zr1]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Abrus_precatorius Abrus precatorius]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ZR1 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ZR1 FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=NDG:2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE'>NDG</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2q3n|2q3n]], [[1abr|1abr]]</td></tr>
@@ Line 37: / Line 37: @@
 __TOC__
 </StructureSection>
-[[Category: Abrpr]]
+[[Category: Abrus precatorius]]
 [[Category: Large Structures]]
 [[Category: RRNA N-glycosylase]]

2zr1

From Proteopedia

Revision as of 06:14, 16 October 2019

Agglutinin from Abrus Precatorius

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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