mapping issues from genomic to pdb

[jjgao]

reported by user:

a strange case where a genomic position maps onto several different residues on the same protein chain. Here is an example:
https://g2s.genomenexus.org/api/alignments/hgvs-grch37/chr12:g.104713303C%3ET/pdb/3QFB_A/residueMapping

After getting the genome nexus data, I suspect that the gene_id was used for retrieving alignments. If so, transcript_id or trotein_id should be used instead.