ISDA

Deposition Date 2010-07-07

Release Date 2011-02-23

Last Version Date 2023-09-06

Entry Detail

PDB ID:

3NUM

Keywords:

HYDROLASE

Title:

Substrate induced remodeling of the active site regulates HtrA1 activity

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.75 Å

R-Value Free:

0.28

R-Value Work:

0.24

R-Value Observed:

0.24

Space Group:

H 3

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Serine protease HTRA1
Gene (Uniprot):HTRA1
Mutations:S328A
Chain IDs:A
Chain Length:332
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:Q92743 Pfam ID:PF13365, PF17820 EC:3.4.21.107

Ligand Molecules

Primary Citation

Substrate-induced remodeling of the active site regulates human HTRA1 activity.

Truebestein, L, Tennstaedt, A, Monig, T, Krojer, T, Canellas, F, Kaiser, M, Clausen, T, Ehrmann, M.Show

Nat.Struct.Mol.Biol. 18 386 388 (2011)

PMID: 21297635 DOI: 10.1038/nsmb.2013

Abstact

Crystal structures of active and inactive conformations of the human serine protease HTRA1 reveal that substrate binding to the active site is sufficient to stimulate proteolytic activity. HTRA1 attaches to liposomes, digests misfolded proteins into defined fragments and undergoes substrate-mediated oligomer conversion. In contrast to those of other serine proteases, the PDZ domain of HTRA1 is dispensable for activation or lipid attachment, indicative of different underlying mechanistic features.

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Primary Citation of related structures