<p>An example of a result. So far I have been unable to find the answer on my own.</p>
<p>&quot;&gt;CP000000.0:c2005000-2006000 Escherichia coli strain XYZ chromosome</p>
<p>ATG...&quot;</p>

CC BY-SA 4.0
2020-11-27T07:41:35.207Z
Please provide more details. Without context this could mean anything or nothing.
Devon Ryan
CC BY-SA 4.0
2020-11-27T10:00:03.517Z
What more context should I give? I have the amino acid sequence of a protein and I want to find its genomic sequence in all available strains of a certain bacterium. I have tblastn hit results in .txt format. As I understand  after the accession number there is a colon and after it numbers signifying genomic position of hit sequence. In some cases, however, after the colon there is the letter 'c' and I have no clue what that means.
bionewb0000
CC BY-SA 4.0
2020-11-27T14:06:52.177Z
The `c` is from the database itself, so one would need to know exactly WHAT you're blasting against.
Devon Ryan
<blast>
What is the meaning of letter 'c' in tblastn results before genomic sequence position?
# What is the meaning of letter 'c' in tblastn results before genomic sequence position?

(Asked by: username_0 on 2020-11-26)

An example of a result. So far I have been unable to find the answer on my own.

">CP000000.0:c2005000-2006000 Escherichia coli strain XYZ chromosome

ATG..."

**Tags:** blast
> **Comments:**
> **username_1**: Please provide more details. Without context this could mean anything or nothing.  
> **username_0**: What more context should I give? I have the amino acid sequence of a protein and I want to find its genomic sequence in all available strains of a certain bacterium. I have tblastn hit results in .txt format. As I understand  after the accession number there is a colon and after it numbers signifying genomic position of hit sequence. In some cases, however, after the colon there is the letter 'c' and I have no clue what that means.  
> **username_1**: The `c` is from the database itself, so one would need to know exactly WHAT you're blasting against.  

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## 0 answers

