A PHP Error was encountered

Severity: Warning

Message: file_get_contents(https://...@pubfacts.com&api_key=b8daa3ad693db53b1410957c26c9a51b4908&a=1): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests

Filename: helpers/my_audit_helper.php

Line Number: 176

Backtrace:

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 176
Function: file_get_contents

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 250
Function: simplexml_load_file_from_url

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3122
Function: getPubMedXML

File: /var/www/html/application/controllers/Detail.php
Line: 575
Function: pubMedSearch_Global

File: /var/www/html/application/controllers/Detail.php
Line: 489
Function: pubMedGetRelatedKeyword

File: /var/www/html/index.php
Line: 316
Function: require_once

The absolute configuration on the chiral nitrogen atom of proline residue in the metal complexes of oligopeptides. | LitMetric

The CD spectra of the Cu(II) and Ni(II) complexes with peptides containing N-terminal L-proline residue are discussed. The formation of the absolute configuration on the bound proline nitrogen is observed in all studied complexes and its contribution to the chiralooptical properties is easily seen in CD spectra.

Download full-text PDF

Source
http://dx.doi.org/10.1016/0162-0134(84)80022-7DOI Listing

Publication Analysis

Top Keywords

absolute configuration
8
configuration chiral
4
chiral nitrogen
4
nitrogen atom
4
atom proline
4
proline residue
4
residue metal
4
metal complexes
4
complexes oligopeptides
4
oligopeptides spectra
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!