# MetaPhlAn 4 CHOCOPhlAn SGB Mapping to MetaPhlAn3

**URL:** <https://forum.biobakery.org/t/metaphlan-4-chocophlan-sgb-mapping-to-metaphlan3/9073>\
**Category:** MetaPhlAn\
**Created:** [October 1, 2026, 5:40am UTC](https://forum.biobakery.org/t/metaphlan-4-chocophlan-sgb-mapping-to-metaphlan3/9073 "2026-10-01T05:40:22Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Sayantan\_Bain](https://avatars.discourse-cdn.com/v4/letter/s/c5a1d2/32.png) [@Sayantan\_Bain](https://forum.biobakery.org/u/Sayantan_Bain)\
**Post date:** [October 1, 2026, 5:40am UTC](https://forum.biobakery.org/t/metaphlan-4-chocophlan-sgb-mapping-to-metaphlan3/9073/1 "2026-10-01T05:40:22Z")

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So I have run my analysis with MetaPhlan 4 which uses this version of Chocophlan:- mpa\_vOct22\_CHOCOPhlAnSGB\_202403\_species , now I want to compare my results with another study which was run with mpa\_v30\_CHOCOPhlAn\_201901\_species\_tree, which I know is based on NCBI texa. So I was just wondering if there is a SGB file for MetaPhlAn 3 so that I can match it with 4th version or a GCA annotation tree file for MetaPhlAn4 , because I know that they have the SGB IDs in place of the GCA ids as was the case with previous v30 file.

I have come across the address:- [Index of /databases/PhyloPhlAn/SGB\_databases\_v30](https://cmprod1.cibio.unitn.it/databases/PhyloPhlAn/SGB_databases_v30/) this where SGB.Jan21.txt.bz2 , which has both GCA and SGB annotations , but I am a bit hesitant in using it… it would be really helpful if somebody can shed some light in this problem.