# Importing lowercase alignment file

**URL:** https://forum.qiime2.org/t/importing-lowercase-alignment-file/5294
**Category:** User Support
**Tags:** align, import
**Created:** [July 27, 2018, 6:40pm UTC](https://forum.qiime2.org/t/importing-lowercase-alignment-file/5294 "2018-07-27T18:40:49Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![Nicholas\_Bokulich](https://forum.qiime2.org/user_avatar/forum.qiime2.org/nicholas_bokulich/32/19937_2.png) [@Nicholas\_Bokulich](https://forum.qiime2.org/u/Nicholas_Bokulich)
#### Post date: [July 27, 2018, 6:44pm UTC](https://forum.qiime2.org/t/importing-lowercase-alignment-file/5294/2 "2018-07-27T18:44:06Z")

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> [@Maxy](#):
>
> How do I import lowercase nucleotides?

lowercase nucleotides can cause issues with some tools downstream, so I'd recommend just converting to uppercase. [I don't think a bash one-liner would be too janky](https://forum.qiime2.org/t/troubles-importing-fasta-file/2546/10), provided it does not cause issues with your seq IDs.

Good luck!

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