View source for 21nr


==Cryo-EM structure of TLP-IPT==
<StructureSection load='21nr' size='340' side='right'caption='[[21nr]], [[Resolution|resolution]] 3.30&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[21nr]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Algae_metagenome Algae metagenome]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=21NR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=21NR FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.3&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=A2G:N-ACETYL-2-DEOXY-2-AMINO-GALACTOSE'>A2G</scene>, <scene name='pdbligand=AHR:ALPHA-L-ARABINOFURANOSE'>AHR</scene>, <scene name='pdbligand=BGC:BETA-D-GLUCOSE'>BGC</scene>, <scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=FUB:BETA-L-ARABINOFURANOSE'>FUB</scene>, <scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=GLA:ALPHA+D-GALACTOSE'>GLA</scene>, <scene name='pdbligand=GZL:BETA-D-GALACTOFURANOSE'>GZL</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=XYP:BETA-D-XYLOPYRANOSE'>XYP</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=21nr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=21nr OCA], [https://pdbe.org/21nr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=21nr RCSB], [https://www.ebi.ac.uk/pdbsum/21nr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=21nr ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
CryoSeek is a research strategy that employs cryo-electron microscopy (cryo-EM) to discover bio-entities from accessible sources, supplemented with AI-facilitated data processing and bioinformatic analyses. Here we report CryoSeek-based characterization of more glycofibrils isolated from the Tsinghua Lotus Pond (TLP), named TLP-0/2/3/4b/IPT, with resolutions ranging from 3.0-3.5 A. These glycofibrils, all covered with dense glycoshells, have various mass percentiles of the central protein components. TLP-0 has no protein at all, TLP-2 and TLP-4b each only have a linear chain of di- or tetra-peptide repeats, respectively; the central stem of TLP-3 is a trimer of linear tripeptide repeats, and IPT (immunoglobulin-like, plexins, and transcription factors) refers to the tandem domain that constitutes the central stem of TLP-IPT. Glycan-mediated interactions determine the structural assembly of the glycofibrils that lack folded protein component. Our previous and current studies reveal the diversity of the structural folds of glycans, advance our understanding of glycan architecture, and further demonstrate CryoSeek as a structure-first paradigm for discovery.

CryoSeek identification of glycofibrils with diverse compositions and structural assemblies.,Li Z, Wang T, Sun Y, Xu K, Huang W, Zhang QC, Yan C, Hu M, Yan N Cell Chem Biol. 2026 May 21;33(5):699-710.e2. doi: , 10.1016/j.chembiol.2026.03.008. Epub 2026 Apr 20. PMID:42013841<ref>PMID:42013841</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 21nr" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Algae metagenome]]
[[Category: Large Structures]]
[[Category: Li Z]]
[[Category: Wang T]]
[[Category: Yan N]]