1joh: Difference between revisions

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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1joh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1joh OCA], [https://pdbe.org/1joh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1joh RCSB], [https://www.ebi.ac.uk/pdbsum/1joh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1joh ProSAT]</span></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=1joh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1joh OCA], [https://pdbe.org/1joh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1joh RCSB], [https://www.ebi.ac.uk/pdbsum/1joh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1joh ProSAT]</span></td></tr>
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<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
BACKGROUND: Antiamoebin is a member of the peptaibol family of polypeptides and has a unique antibiotic activity: it acts as an antiamoebic agent, but does not effectively haemolyze erythrocytes even though it does exhibit membrane-modifying activity. RESULTS: The structure of antiamoebin I has been determined by X-ray crystallography at 1.4 A resolution. The molecule forms a helical structure, which, as a result of the presence of a number of proline and hydroxyproline residues, has a deep bend in the middle. Circular dichroism spectroscopy, single-channel conductance studies and fluorescence diffusion studies suggest a mode of ion transport that is entirely different from that of the other two members of the peptaibol family (alamethicin and zervamicin) whose structures and functions have been examined in detail. CONCLUSIONS: The structure of the polypeptide has been determined and a functional model for its mode of action in membranes is presented. Although under some conditions antiamoebin may form ion channels, unlike the closely related alamethicin and zervamicin polypeptides, its major membrane-modifying activity appears to be as an ion carrier.
The structure and function of antiamoebin I, a proline-rich membrane-active polypeptide.,Snook CF, Woolley GA, Oliva G, Pattabhi V, Wood SF, Blundell TL, Wallace BA Structure. 1998 Jun 15;6(6):783-92. PMID:9655831<ref>PMID:9655831</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 1joh" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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Revision as of 09:04, 3 April 2024

THE STRUCTURE OF ANTIAMOEBIN I, A MEMBRANE-ACTIVE PEPTIDETHE STRUCTURE OF ANTIAMOEBIN I, A MEMBRANE-ACTIVE PEPTIDE

Structural highlights

1joh is a 2 chain structure with sequence from Emericellopsis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.4Å
Ligands:, , , , , ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

1joh, resolution 1.40Å

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