ISDA: 7NDE

Deposition Date 2021-02-01

Release Date 2022-03-02

Last Version Date 2024-10-16

Entry Detail

PDB ID:

7NDE

Keywords:

LYASE

Title:

Trichoderma parareesei PL7A beta-glucuronan lyase

Biological Source:

Source Organism:

Trichoderma parareesei (Taxon ID: 858221)

Host Organism:

Komagataella pastoris

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.45 Å

R-Value Free:

0.17

R-Value Work:

0.15

R-Value Observed:

0.15

Space Group:

P 41 21 2

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Glucuronan lyase
Gene (Uniprot):A9Z42_0012760
Chain IDs:A
Chain Length:242
Number of Molecules:1
Biological Source:Trichoderma parareesei

UniProt ID:A0A2H2ZFD4 Pfam ID:PF08787

Ligand Molecules

EDO

NAG

Primary Citation

Glucuronan lyases from family PL7 use a Tyr/Tyr syn beta-elimination catalytic mechanism for glucuronan breakdown.

Vuillemin, M, Pilgaard, B, Kiehn, E, Fredslund, F, Welner, D.H, Meyer, A.S, Aachmann, F.L, Wilkens, C.Show

Chem.Commun.(Camb.) 60 440 443 (2024)

PMID: 38087900 DOI: 10.1039/d3cc04256a

Abstact

TpPL7A and TpPL7B, members of CAZy family PL7, act as β-glucuronan lyases. TpPL7A diverges by lacking the catalytic histidine, identified as the Brønsted base in PL7 alginate lyases. Our research, including TpPL7A's crystal structure, and mutagenesis studies, reveals a shared syn-β-elimination mechanism with a single tyrosine serving as both base and acid catalyst. This mechanism may extend to subfamily PL7_4 glucuronan lyases.

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Disease

Primary Citation of related structures

Abstact

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