@prefix ex: <https://sparql.uniprot.org/.well-known/sparql-examples/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix schema: <https://schema.org/> .
@prefix sh: <http://www.w3.org/ns/shacl#> .

ex:215_human_proteins_with_solved_structure a sh:SPARQLExecutable,
        sh:SPARQLSelectExecutable ;
    rdfs:comment "Count how many reviewed human proteins have at least one experimentally determined 3D structure cross-referenced from a PDB entry"@en ;
    sh:prefixes _:sparql_examples_prefixes ;
    sh:select """PREFIX up: <http://purl.uniprot.org/core/>
PREFIX taxon: <http://purl.uniprot.org/taxonomy/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>

SELECT
  (COUNT(DISTINCT ?protein) AS ?proteinsWithStructure)
WHERE {
  ?protein a up:Protein ;
    up:organism taxon:9606 ;
    up:reviewed true ;
    rdfs:seeAlso ?structure .
  ?structure a up:Structure_Resource ;
    up:database <http://purl.uniprot.org/database/PDB> .
}""";
    schema:keywords "structure" , "PDB" , "human proteome" ;
    schema:target <https://sparql.uniprot.org/sparql/> .