Crystal Structure of Longer Splice Variant of PTD012 from Homo sapiens reveals a novel Zinc-containing fold

Experimental Data Snapshot

  • Resolution: 1.70 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.190 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


Crystal structure of Homo sapiens PTD012 reveals a zinc-containing hydrolase fold

Manjasetty, B.A.Buessow, K.Fieber-Erdmann, M.Roske, Y.Gobom, J.Scheich, C.Goetz, F.Niesen, F.H.Heinemann, U.

(2006) Protein Sci 15: 914-920

  • DOI: https://doi.org/10.1110/ps.052037006
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The human protein PTD012 is the longer product of an alternatively spliced gene and was described to be localized in the nucleus. The X-ray structure analysis at 1.7 A resolution of PTD012 through SAD phasing reveals a monomeric protein and a novel fold. The shorter splice form was also studied and appears to be unfolded and non-functional. The structure of PTD012 displays an alphabetabetaalpha four-layer topology. A metal ion residing between the central beta-sheets is partially coordinated by three histidine residues. X-ray absorption near-edge structure (XANES) analysis identifies the PTD012-bound ion as Zn(2+). Tetrahedral coordination of the ion is completed by the carboxylate oxygen atom of an acetate molecule taken up from the crystallization buffer. The binding of Zn(2+) to PTD012 is reminiscent of zinc-containing enzymes such as carboxypeptidase, carbonic anhydrase, and beta-lactamase. Biochemical assays failed to demonstrate any of these enzyme activities in PTD012. However, PTD012 exhibits ester hydrolase activity on the substrate p-nitrophenyl acetate.

  • Organizational Affiliation

    Protein Structure Factory, Berlin 12489, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
hypothetical protein PTD012
A, B
316Homo sapiensMutation(s): 0 
Gene Names: DKFZp564H1122
UniProt & NIH Common Fund Data Resources
Find proteins for Q9H0W9 (Homo sapiens)
Explore Q9H0W9 
Go to UniProtKB:  Q9H0W9
GTEx:  ENSG00000182919 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9H0W9
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.70 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.190 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.572α = 90
b = 52.888β = 88.89
c = 124.485γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-09-27
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance