Answers.Body: <p>NP_420767 is represented by the non-redundant refSeq protein WP_010919826, which has the same amino acid sequence. This is not very clearly annotated, but if you scroll down to the sequence in the GenPept entry for NP_420767, you'll see the following:</p>
  
  <pre><code>CONTIG      join(WP_010919826.1:1..799)
  </code></pre>
  
  <p>See <a href="https://www.ncbi.nlm.nih.gov/refseq/about/nonredundantproteins" rel="nofollow noreferrer">here</a> for more info.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-07-25T12:00:23.260Z
Answers.Text: Ah, I understand.. And in the list after clicking on "identical proteins" on the "WP_010919826.1" site, "NP_420767" gets listed.
Answers.UserDisplayName: Matthias F.
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-07-25T11:27:52.257Z
Answers.LastActivityDate: 2017-07-25T11:27:52.257Z
Answers.UserDisplayName: heathobrien
Body: <p>Can anyone explain me, why I don't find a specific protein with a blast that was took before from the NCBI refseq database?</p>
  
  <p>Specifically, I was trying to blast the protein with the accession number "NP_420767" and its sequence, respectively, however that protein does not show up in the results. It not only happens when the standard options are chosen, but also, when "Reference proteins (refseq_protein)" as database in the blast options is selected.</p>
  
  <p>I am really puzzled by that.. Shouldn't blast show the initial refseq entry in the results list as it is part of the refseq database and has the same sequence?</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-07-25T12:54:05.813Z
Comments.Text: Relevant: [Duplicate long hits from PSI-BLAST](//bioinformatics.stackexchange.com/a/831)
Comments.UserDisplayName: terdon
Tags: <blast><refseq>
Title: blasting a refseq protein does not show the protein in the result set
ThreadText: # blasting a refseq protein does not show the protein in the result set
  
  (Asked by: username_0 on 2017-07-25)
  
  Can anyone explain me, why I don't find a specific protein with a blast that was took before from the NCBI refseq database?
  
  Specifically, I was trying to blast the protein with the accession number "NP\_420767" and its sequence, respectively, however that protein does not show up in the results. It not only happens when the standard options are chosen, but also, when "Reference proteins (refseq\_protein)" as database in the blast options is selected.
  
  I am really puzzled by that.. Shouldn't blast show the initial refseq entry in the results list as it is part of the refseq database and has the same sequence?
  
  **Tags:** blast, refseq
  
  > **Comments:**
  > **username_1**: Relevant: [Duplicate long hits from PSI-BLAST](//bioinformatics.stackexchange.com/a/831)  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_2 on 2017-07-25. Score: 2 | Accepted answer
  
  NP\_420767 is represented by the non-redundant refSeq protein WP\_010919826, which has the same amino acid sequence. This is not very clearly annotated, but if you scroll down to the sequence in the GenPept entry for NP\_420767, you'll see the following:
  
  ```
  CONTIG      join(WP_010919826.1:1..799)
  
  ```
  
  See [here](https://www.ncbi.nlm.nih.gov/refseq/about/nonredundantproteins) for more info.
  
  > **Comments:**
  > **username_0**: Ah, I understand.. And in the list after clicking on "identical proteins" on the "WP_010919826.1" site, "NP_420767" gets listed.  
  
  ---
  
  