<p>You first need to get the coordinates of the "cytoband" 21q22.11, which I would search for using the <a href="https://genome.ucsc.edu/cgi-bin/hgTables?hgsid=791314831_aE2GlksiE79iyiT0FHCRXDZcFwPC" rel="nofollow noreferrer">UCSC table browser</a>. You need the following settings: 
Clade: Mammal
genome: Human
assembly: 
group: Mapping and Sequencing
track: Chromosome Band
table: cytoBand
region: position chr21
output format: BED</p>

<p>(you can leave other options as default)</p>

<p>That will give you a bed file of cytobands on chr21. You'll need to search (e.g. grep) for your cytoband: q22.11.</p>

CC BY-SA 4.0
2020-01-17T08:07:17.153Z
2020-01-17T08:07:17.153Z
Wouter De Coster
<p>I am new to this. I have an SNP array composed of digits [0,1,2] for chromosome 21. How do I find the start:end locations for the region that is "21q22.11" step by step?</p>

CC BY-SA 4.0
2020-01-17T09:13:58.057Z
It seems your title doesn't really match to the content of your question, could you fix that?
Wouter De Coster
<gene><snp>
How to Convert From Gene Location to SNP Location
# How to Convert From Gene Location to SNP Location

(Asked by: username_0 on 2020-01-16)

I am new to this. I have an SNP array composed of digits [0,1,2] for chromosome 21. How do I find the start:end locations for the region that is "21q22.11" step by step?

**Tags:** gene, snp
> **Comments:**
> **username_1**: It seems your title doesn't really match to the content of your question, could you fix that?  

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## 1 answers

### Answer by username_1 on 2020-01-17. Score: 2

You first need to get the coordinates of the "cytoband" 21q22.11, which I would search for using the [UCSC table browser](https://genome.ucsc.edu/cgi-bin/hgTables?hgsid=791314831_aE2GlksiE79iyiT0FHCRXDZcFwPC). You need the following settings:
Clade: Mammal
genome: Human
assembly:
group: Mapping and Sequencing
track: Chromosome Band
table: cytoBand
region: position chr21
output format: BED

(you can leave other options as default)

That will give you a bed file of cytobands on chr21. You'll need to search (e.g. grep) for your cytoband: q22.11.


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