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Difference between revisions of "Polysaccharide Lyase Family 32"

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(Added Deleted Family status and table)
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=== PL32 is a deleted family ===
== Substrate specificities ==
 
 
The PL32 family was created following the functional characterization of the ORF “HMPREF1071_02769” from ''Bacteroides salyersiae ''CL02T12C01 (EIY62149.1), which showed endo-mannuronan lyase activity ([https://www.enzyme-database.org/query.php?ec=4.2.2.3 EC 4.2.2.3]) <cite>Helbert2019</cite>. Shortly afterwards, the sequence was <u>'''reclassified'''</u> as  [http://www.cazy.org/PL0.html PL_nc]  on the basis of structural modelling revealing that the catalytic domain was restricted to the N-terminal domain <cite>Drula2022</cite>. The small number of sequences and the proximity to the [[PL14]] and [[PL36]] families do not allow the creation of a new PL family.   
 
The PL32 family was created following the functional characterization of the ORF “HMPREF1071_02769” from ''Bacteroides salyersiae ''CL02T12C01 (EIY62149.1), which showed endo-mannuronan lyase activity ([https://www.enzyme-database.org/query.php?ec=4.2.2.3 EC 4.2.2.3]) <cite>Helbert2019</cite>. Shortly afterwards, the sequence was <u>'''reclassified'''</u> as  [http://www.cazy.org/PL0.html PL_nc]  on the basis of structural modelling revealing that the catalytic domain was restricted to the N-terminal domain <cite>Drula2022</cite>. The small number of sequences and the proximity to the [[PL14]] and [[PL36]] families do not allow the creation of a new PL family.   
  

Revision as of 15:40, 1 October 2024

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This family has been deleted from the CAZy classification. A specific explanation may be found below.


PL32 is a deleted family

The PL32 family was created following the functional characterization of the ORF “HMPREF1071_02769” from Bacteroides salyersiae CL02T12C01 (EIY62149.1), which showed endo-mannuronan lyase activity (EC 4.2.2.3) [1]. Shortly afterwards, the sequence was reclassified as PL_nc on the basis of structural modelling revealing that the catalytic domain was restricted to the N-terminal domain [2]. The small number of sequences and the proximity to the PL14 and PL36 families do not allow the creation of a new PL family.

References

  1. Helbert W, Poulet L, Drouillard S, Mathieu S, Loiodice M, Couturier M, Lombard V, Terrapon N, Turchetto J, Vincentelli R, and Henrissat B. (2019). Discovery of novel carbohydrate-active enzymes through the rational exploration of the protein sequences space. Proc Natl Acad Sci U S A. 2019;116(13):6063-6068. DOI:10.1073/pnas.1815791116 | PubMed ID:30850540 [Helbert2019]
  2. Drula E, Garron ML, Dogan S, Lombard V, Henrissat B, and Terrapon N. (2022). The carbohydrate-active enzyme database: functions and literature. Nucleic Acids Res. 2022;50(D1):D571-D577. DOI:10.1093/nar/gkab1045 | PubMed ID:34850161 [Drula2022]

All Medline abstracts: PubMed

CAZy DB links
https://www.cazy.org/PL32.html