1nar

<StructureSection load='1nar' size='340' side='right' caption='[[1nar]], [[Resolution|resolution]] 1.80&Aring;' scene=''>

<table><tr><td colspan='2'>[[1nar]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Narbonne_vetch Narbonne vetch]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NAR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1NAR FirstGlance]. <br>

</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1nar FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nar OCA], [http://pdbe.org/1nar PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1nar RCSB], [http://www.ebi.ac.uk/pdbsum/1nar PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1nar ProSAT]</span></td></tr>

<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/na/1nar_consurf.spt"</scriptWhenChecked>

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== Publication Abstract from PubMed ==

The three-dimensional structure of narbonin, a seed protein from Vicia narbonensis L, has been determined at 1.8 A resolution. Phase information was obtained by multiple isomorphous replacement and optimized anomalous dispersion. The narbonin structure was initially traced with only 17% amino-acid sequence information and preliminarily refined to a crystallographic R-factor of 16.5%. It is now refined to 15.9% using full sequence information derived from cDNA and after the addition of more solvent molecules. The monomeric molecule of narbonin is an eight-stranded parallel beta-barrel surrounded by alpha-helices in a beta/alpha-topology similar to that first observed in triose phosphate isomerase. Differences exist in the N-terminal part of the polypeptide chain, where the first helix is replaced by a loop and the second beta-strand is followed by an additional antiparallel alpha-sheet placed parallel on top of alpha-helices alpha3 and alpha4. Two short additional secondary structures are present. The first, an alpha-helix, is situated between the seventh beta-strand and the following helix, and the second, which is a 3(10) helix, between the eighth strand and the C-terminal helix. The most striking observation is the lack of a known enzymatic function for narbonin, because all TIM-like structures known so far are enzymes.

Crystal structure of narbonin at 1.8 A resolution.,Hennig M, Pfeffer-Hennig S, Dauter Z, Wilson KS, Schlesier B, Nong VH Acta Crystallogr D Biol Crystallogr. 1995 Mar 1;51(Pt 2):177-89. PMID:15299319<ref>PMID:15299319</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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== References ==

<references/>

[[Category: Narbonne vetch]]

[[Category: Hennig, M]]

[[Category: Schlesier, B]]

[[Category: Wilson, K S]]

[[Category: Plant seed protein]]