2k10

From Proteopedia

(Difference between revisions)

Revision as of 18:07, 1 November 2023

Confirmational analysis of the broad-spectrum antibacterial peptide, rantuerin-2csa: identification of a full length helix-turn-helix motif

Structural highlights

2k10 is a 1 chain structure with sequence from Rana cascadae. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	Solution NMR
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

RN2A_RANCS Antibacterial peptide with amphipathic alpha-helical structure. Active against E.coli ATCC 25726 (MIC=4-5 uM) and S.aureus ATCC 25923 (MIC=8-10 uM). Has a weak hemolytic activity on human erythrocytes (LC(50)=150-160 uM).^[1] ^[2]

Publication Abstract from PubMed

Design of clinically valuable antibacterial agents based upon naturally occurring peptides requires the use of spectroscopic methods, particularly NMR, to determine the three-dimensional structure of the native peptide so that analogues with improved therapeutic properties can be made. Ranatuerin-2CSa (GILSSFKGVAKGVAKDLAG KLLETLKCKITGC), first isolated from skin secretions of the Cascades frog, Rana cascadae, represents a promising candidate for drug development. The peptide shows potent growth inhibitory activity against Escherichia coli (MIC=5 muM) and Staphylococcus aureus (MIC=10 muM) but displays haemolytic activity against human erythrocytes (LC(50)=160 muM). The solution structure of ranatuerin-2CSa was investigated by proton NMR spectroscopy and molecular modelling. In aqueous solution, the peptide lacks secondary structure but, in a 2,2,2-trifluoroethanol (TFE-d(3))-H(2)O solvent mixture, the structure is characterised by a full length helix-turn-helix conformation between residues I(2)-L(21), L(22)-L(25) and K(26)-T(30) respectively. This structural information will facilitate the design of novel therapeutic agents based upon the ranatuerin-2CSa structure with improved antimicrobial potencies but decreased cytolytic activities against mammalian cells.

Conformational analysis of the broad-spectrum antibacterial peptide, ranatuerin-2CSa: Identification of a full length helix-turn-helix motif.,Subasinghage AP, Conlon JM, Hewage CM Biochim Biophys Acta. 2008 Jun;1784(6):924-9. Epub 2008 Mar 14. PMID:18387372^[3]

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

References

↑ Conlon JM, Al-Dhaheri A, Al-Mutawa E, Al-Kharrge R, Ahmed E, Kolodziejek J, Nowotny N, Nielsen PF, Davidson C. Peptide defenses of the Cascades frog Rana cascadae: implications for the evolutionary history of frogs of the Amerana species group. Peptides. 2007 Jun;28(6):1268-74. PMID:17451843 doi:10.1016/j.peptides.2007.03.010
↑ Subasinghage AP, Conlon JM, Hewage CM. Conformational analysis of the broad-spectrum antibacterial peptide, ranatuerin-2CSa: Identification of a full length helix-turn-helix motif. Biochim Biophys Acta. 2008 Jun;1784(6):924-9. Epub 2008 Mar 14. PMID:18387372 doi:http://dx.doi.org/S1570-9639(08)00078-2
↑ Subasinghage AP, Conlon JM, Hewage CM. Conformational analysis of the broad-spectrum antibacterial peptide, ranatuerin-2CSa: Identification of a full length helix-turn-helix motif. Biochim Biophys Acta. 2008 Jun;1784(6):924-9. Epub 2008 Mar 14. PMID:18387372 doi:http://dx.doi.org/S1570-9639(08)00078-2

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://proteopedia.org/wiki/index.php/2k10"

Categories: Large Structures | Rana cascadae | Conlon M | Hewage CM | Subasinghage AP

@@ Line 1: / Line 1: @@
 ==Confirmational analysis of the broad-spectrum antibacterial peptide, rantuerin-2csa: identification of a full length helix-turn-helix motif==
-<StructureSection load='2k10' size='340' side='right'caption='[[2k10]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
+<StructureSection load='2k10' size='340' side='right'caption='[[2k10]]' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2k10]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2K10 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2K10 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2k10]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Rana_cascadae Rana cascadae]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2K10 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2K10 FirstGlance]. <br>
-</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=2k10 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2k10 OCA], [https://pdbe.org/2k10 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2k10 RCSB], [https://www.ebi.ac.uk/pdbsum/2k10 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2k10 ProSAT]</span></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</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=2k10 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2k10 OCA], [https://pdbe.org/2k10 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2k10 RCSB], [https://www.ebi.ac.uk/pdbsum/2k10 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2k10 ProSAT]</span></td></tr>
 </table>
+== Function ==
+[https://www.uniprot.org/uniprot/RN2A_RANCS RN2A_RANCS] Antibacterial peptide with amphipathic alpha-helical structure. Active against E.coli ATCC 25726 (MIC=4-5 uM) and S.aureus ATCC 25923 (MIC=8-10 uM). Has a weak hemolytic activity on human erythrocytes (LC(50)=150-160 uM).<ref>PMID:17451843</ref> <ref>PMID:18387372</ref>
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 20: / Line 23: @@
 </StructureSection>
 [[Category: Large Structures]]
-[[Category: Conlon, M]]
+[[Category: Rana cascadae]]
-[[Category: Hewage, C M]]
+[[Category: Conlon M]]
-[[Category: Subasinghage, A P]]
+[[Category: Hewage CM]]
-[[Category: Antimicrobial peptide]]
+[[Category: Subasinghage AP]]
-[[Category: Antimicrobial protein]]
-[[Category: Disulfide bond]]
-[[Category: Helix-turn-helix]]
-[[Category: Molecular modelling]]

2k10

From Proteopedia

Revision as of 18:07, 1 November 2023

Confirmational analysis of the broad-spectrum antibacterial peptide, rantuerin-2csa: identification of a full length helix-turn-helix motif

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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