# Nomenclature of Glycans

**URL:** <https://ask.bioexcel.eu/t/nomenclature-of-glycans/3349>\
**Category:** HADDOCK\
**Created:** [November 22, 2021, 7:30am UTC](https://ask.bioexcel.eu/t/nomenclature-of-glycans/3349 "2021-11-22T07:30:13Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Purba](https://avatars.discourse-cdn.com/v4/letter/p/5e9695/32.png) [@Purba](https://ask.bioexcel.eu/u/Purba)\
**Post date:** [November 22, 2021, 7:30am UTC](https://ask.bioexcel.eu/t/nomenclature-of-glycans/3349/1 "2021-11-22T07:30:13Z")

</div>

Hello all, I want to analyse glycosaminoglycan docking, for which I was trying to change the nomenclature of glucose rings according to the HADDOCK library supported carbohydrates. One of the monosaccharide units of Heparin are in L conformation and none of the supported structures in HADDOCK are in L conformation. So which nomenclature should be used for the glucose ring with L conformation?

Thanks in advance for your help.

---

<div class="post-metadata">

**Author:** ![amjjbonvin](https://dub1.discourse-cdn.com/flex013/user_avatar/ask.bioexcel.eu/amjjbonvin/32/23_2.png) [@amjjbonvin](https://ask.bioexcel.eu/u/amjjbonvin)\
**Post date:** [November 23, 2021, 8:40am UTC](https://ask.bioexcel.eu/t/nomenclature-of-glycans/3349/2 "2021-11-23T08:40:30Z")

</div>

We don’t have any support for heparin building blocks I am afraid.

If not too long (\<10 units) you can try to define it as one residue, with unique atom names for all units and as HETATM