Influence of Trp flipping on carbohydrate binding in lectins. An example on Aleuria aurantia lectin AAL

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F17%3A00095446" target="_blank" >RIV/00216224:14740/17:00095446 - isvavai.cz</a>

Result on the web

<a href="http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0189375&type=printable" target="_blank" >http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0189375&type=printable</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1371/journal.pone.0189375" target="_blank" >10.1371/journal.pone.0189375</a>

Result language

angličtina

Original language name

Influence of Trp flipping on carbohydrate binding in lectins. An example on Aleuria aurantia lectin AAL

Original language description

Protein-carbohydrate interactions are very often mediated by the stacking CH-pi interactions involving the side chains of aromatic amino acids such as tryptophan (Trp), tyrosine (Tyr) or phenylalanine (Phe). Especially suitable for stacking is the Trp residue. Analysis of the PDB database shows Trp stacking for 265 carbohydrate or carbohydrate-like ligands in 5 208 Trp-containing motives. An appropriate model system to study such an interaction is the AAL lectin family, where the stacking interactions play a crucial role and are thought to be a driving force for carbohydrate binding. In this study we present data showing a novel finding in the stacking interaction of the AAL Trp side chain with the carbohydrate. High resolution X-ray structure of the AAL lectin from Aleuria aurantia with alpha-methyl-L-fucoside ligand shows two possible Trp side chain conformations with the same occupation in electron density. The in silico data shows that the conformation of the Trp side chain does not influence the interaction energy despite the fact that each conformation creates interactions with different carbohydrate CH groups. Moreover, the PDB data search shows that the conformations are almost equally distributed across all Trp-carbohydrate complexes, which would suggest no substantial preference for one conformation over another.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10600 - Biological sciences

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Plos one

ISSN

1932-6203

e-ISSN

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Volume of the periodical

12

Issue of the periodical within the volume

12

Country of publishing house

US - UNITED STATES

Number of pages

17

Pages from-to

0189375

UT code for WoS article

000417698200036

EID of the result in the Scopus database

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