Hi, I hope you are doing well. I ran BLAST alignment on a multi-gene FASTA file and return the top hit for each gene as a refseq protein ID (such as NP_001229937.1). I want to convert these protein IDs to Entrez Gene Accessions or Ensembl IDs. Is there a way to do so programmatically? I am working in R. I tried Biomart but it returned no matches for some of the input refseq protein IDs.