ISDA

Deposition Date 2019-01-09

Release Date 2019-09-18

Last Version Date 2024-11-20

Entry Detail

PDB ID:

6J34

Keywords:

HYDROLASE

Title:

Crystal Structure of maltotriose-complex of PulA from Klebsiella pneumoniae

Biological Source:

Source Organism:

Klebsiella pneumoniae (Taxon ID: 573)

Host Organism:

Escherichia coli BL21

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.50 Å

R-Value Free:

0.16

R-Value Work:

0.13

R-Value Observed:

0.13

Space Group:

C 1 2 1

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Macromolecular Entities

Polymer Type:polypeptide(L)
Molecule:Pullulanase
Chain IDs:A
Chain Length:1053
Number of Molecules:1
Biological Source:Klebsiella pneumoniae

Ligand Molecules

ACT

GOL

Peptide-like Molecules

PRD_900009

Primary Citation

Relationship between the induced-fit loop and the activity of Klebsiella pneumoniae pullulanase.

Saka, N, Malle, D, Iwamoto, H, Takahashi, N, Mizutani, K, Mikami, B.Show

Acta Crystallogr D Struct Biol 75 792 803 (2019)

PMID: 31478902 DOI: 10.1107/S2059798319010660

Abstact

Klebsiella pneumoniae pullulanase (KPP) belongs to glycoside hydrolase family 13 subfamily 13 (GH13_13) and is the only enzyme that is reported to perform an induced-fit motion of the active-site loop (residues 706-710). Comparison of pullulanase structures indicated that only KPP has Leu680 present behind the loop, in contrast to the glycine found in other GH13_13 members. Analysis of the structure and activity of recombinant pullulanase from K. pneumoniae ATCC 9621 (rKPP) and its mutant (rKPP-G680L) indicated that the side chain of residue 680 is important for the induced-fit motion of the loop 706-710 and alters the binding affinity of the substrate.

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Primary Citation of related structures