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# SPDX-License-Identifier: AGPL-3.0-or-later
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"""
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PDBe (Protein Data Bank in Europe)
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"""
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from json import loads
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from flask_babel import gettext
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# about
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about = {
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"website": 'https://www.ebi.ac.uk/pdbe',
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"wikidata_id": 'Q55823905',
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"official_api_documentation": 'https://www.ebi.ac.uk/pdbe/api/doc/search.html',
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"use_official_api": True,
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"require_api_key": False,
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"results": 'JSON',
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}
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categories = ['science']
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hide_obsolete = False
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# status codes of unpublished entries
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pdb_unpublished_codes = ['HPUB', 'HOLD', 'PROC', 'WAIT', 'AUTH', 'AUCO', 'REPL', 'POLC', 'REFI', 'TRSF', 'WDRN']
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# url for api query
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pdbe_solr_url = 'https://www.ebi.ac.uk/pdbe/search/pdb/select?'
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# base url for results
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pdbe_entry_url = 'https://www.ebi.ac.uk/pdbe/entry/pdb/{pdb_id}'
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# link to preview image of structure
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pdbe_preview_url = 'https://www.ebi.ac.uk/pdbe/static/entry/{pdb_id}_deposited_chain_front_image-200x200.png'
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def request(query, params):
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params['url'] = pdbe_solr_url
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params['method'] = 'POST'
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params['data'] = {'q': query, 'wt': "json"} # request response in parsable format
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return params
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def construct_body(result):
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# set title
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title = result['title']
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# construct content body
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content = """{title} - {authors} {journal} ({volume}) {page} ({year})"""
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# replace placeholders with actual content
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try:
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if result['journal']:
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content = content.format(
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title=result['citation_title'],
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authors=result['entry_author_list'][0],
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journal=result['journal'],
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volume=result['journal_volume'],
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page=result['journal_page'],
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year=result['citation_year'],
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)
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else:
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content = content.format(
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title=result['citation_title'],
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authors=result['entry_author_list'][0],
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journal='',
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volume='',
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page='',
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year=result['release_year'],
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)
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img_src = pdbe_preview_url.format(pdb_id=result['pdb_id'])
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except (KeyError):
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content = None
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img_src = None
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# construct url for preview image
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try:
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img_src = pdbe_preview_url.format(pdb_id=result['pdb_id'])
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except (KeyError):
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img_src = None
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return [title, content, img_src]
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def response(resp):
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results = []
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json = loads(resp.text)['response']['docs']
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# parse results
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for result in json:
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# catch obsolete entries and mark them accordingly
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if result['status'] in pdb_unpublished_codes:
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continue
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if hide_obsolete:
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continue
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if result['status'] == 'OBS':
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# expand title to add some sort of warning message
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title = gettext('{title} (OBSOLETE)').format(title=result['title'])
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try:
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superseded_url = pdbe_entry_url.format(pdb_id=result['superseded_by'])
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except:
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continue
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# since we can't construct a proper body from the response, we'll make up our own
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msg_superseded = gettext("This entry has been superseded by")
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content = '{msg_superseded}: {url} ({pdb_id})'.format(
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msg_superseded=msg_superseded, url=superseded_url, pdb_id=result['superseded_by']
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)
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# obsoleted entries don't have preview images
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img_src = None
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else:
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title, content, img_src = construct_body(result)
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results.append(
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{
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'url': pdbe_entry_url.format(pdb_id=result['pdb_id']),
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'title': title,
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'content': content,
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'img_src': img_src,
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}
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)
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return results
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