ISDA: 1GOI

Deposition Date 2001-10-21

Release Date 2001-11-15

Last Version Date 2024-10-23

Entry Detail

PDB ID:

1GOI

Keywords:

HYDROLASE

Title:

Crystal structure of the D140N mutant of chitinase B from Serratia marcescens at 1.45 A resolution

Biological Source:

Source Organism:

SERRATIA MARCESCENS (Taxon ID: 615)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.45 Å

R-Value Free:

0.22

R-Value Observed:

0.16

Space Group:

P 21 21 21

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:CHITINASE B
Mutagens:YES
Chain IDs:A, B
Chain Length:499
Number of Molecules:2
Biological Source:SERRATIA MARCESCENS

UniProt ID:P11797 Pfam ID:PF00704

Ligand Molecules

GOL

SO4

Primary Citation

Structure of the D140N Mutant of Chitinase B from Serratia Marcescens at 1.45 A Resolution.

Kolstad, G, Synstad, B, Eijsink, V.G.H, Van Aalten, D.M.F, Van Aalten, D.M.F, Komander, D, Synstad, B, Gaseidnes, S, Peter, M.G, Eijsink, V.G.H, Van Aalten, D.M.F, Synstad, B, Brurberg, M.B, Hough, E, Riise, B, Eijsink, V.G.H, Wierenga, R.K.Show

Acta Crystallogr.,Sect.D 58 377 ? (2002)

PMID: 11807282 DOI: 10.1107/S0907444901018972

Abstact

The crystal structure of the inactive D140N mutant of Serratia marcescens was refined to 1.45 A resolution. The structure of the mutant was essentially identical to that of the wild type, with the exception of a rotation of Asp142 in the catalytic centre. In the mutant, this residue interacts with the catalytic acid (Glu144) and not with residue 140 as in the wild type. Thus, the 500-fold decrease in activity in the D140N mutant seems to be largely mediated by an effect on Asp142, confirming the crucial role of the latter residue in catalysis.

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Primary Citation of related structures