How to search for UniProtKB isoforms?

[dlrice]

The UniProtKB entry P08887 (IL6R, interleukin 6 receptor) has no associated GO-CAMs when searching with the gene products endpoint:

$ curl https://api.geneontology.org/api/gp/UniProtKB:P08887/models
[]

which is surprising as our curators have worked on GO-CAMs for this entry. It was then realized that the GO-CAMs are attached to the specific isoform P08887-2. However the API does not find anything for this:

$ curl https://api.geneontology.org/api/gp/UniProtKB:P08887-2/models
{"detail":"404: Bioentity with ID UniProtKB:P08887-2 not found"}=

Looking at other GO-CAMs we can see isoforms are present in the OWL files. For example, the isoform (P08887-2) mentioned above is contained within the following model,

curl -s  http://noctua.geneontology.org/download/gomodel:5f46c3b700002685/owl | grep -C 1 "P08887-2"

###  http://identifiers.org/uniprot/P08887-2
<http://identifiers.org/uniprot/P08887-2> rdf:type owl:Class .

--
<http://model.geneontology.org/5f46c3b700002685/5fce9b7300000150> rdf:type owl:NamedIndividual ,
                                                                           <http://identifiers.org/uniprot/P08887-2> ;
                                                                  <http://purl.org/dc/elements/1.1/contributor> "https://orcid.org/0000-0001-8769-177X"^^xsd:string ;
--
<http://model.geneontology.org/5f46c3b700002685/6205c24300000254> rdf:type owl:NamedIndividual ,
                                                                           <http://identifiers.org/uniprot/P08887-2> ;
                                                                  <http://purl.org/dc/elements/1.1/contributor> "https://orcid.org/0000-0001-8769-177X"^^xsd:string ;

so it seems GO-CAMs are constructed using UniProtKB isoforms but they aren't searchable via the gene product endpoint. Is that expected? Is there another way for us to search for GO-CAMs with a given UniProtKB isoform?

[kltm]

@dlrice I believe there may be a data flow problem that is cropping up in the goa_human file that causes this. I've created an issue here to track it: #135