3HQ2

BsuCP Crystal Structure


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.188 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Insight into the substrate length restriction of M32 carboxypeptidases: Characterization of two distinct subfamilies.

Lee, M.M.Isaza, C.E.White, J.D.Chen, R.P.Liang, G.F.He, H.T.Chan, S.I.Chan, M.K.

(2009) Proteins 77: 647-657

  • DOI: 10.1002/prot.22478
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • M32 carboxypeptidases are a distinct family of HEXXH metalloproteases whose structures exhibit a narrow substrate groove that is blocked at one end. Structural alignments with other HEXXH metalloprotease-peptide complexes suggested an orientation in ...

    M32 carboxypeptidases are a distinct family of HEXXH metalloproteases whose structures exhibit a narrow substrate groove that is blocked at one end. Structural alignments with other HEXXH metalloprotease-peptide complexes suggested an orientation in which the substrate is directed towards the back of the groove. This led us to hypothesize, and subsequently confirm that the maximum substrate length for M32 carboxypeptidases is restricted. Structural and sequence analyses implicate a highly conserved Arg at the back of the groove as being critical for this length restriction. However, the Thermus thermophilus and Bacillus subtilis M32 members lack this conserved Arg. Herein, we present the biochemical and structural characterization of these two proteins. Our findings support the important role of the conserved Arg in maintaining the length restriction, and reveal a proline-rich loop as an alternate blocking strategy. Based on our results, we propose that M32 carboxypeptidases from Bacilli belong to a separate subfamily.


    Organizational Affiliation

    The Ohio State Biophysics Program, The Ohio State University, 484 West 12th Avenue, Columbus, Ohio 43210, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Bacillus subtilis M32 carboxypeptidase
A, B
501Bacillus subtilis (strain 168)Mutation(s): 0 
Gene Names: ypwA
EC: 3.4.17.19
Find proteins for P50848 (Bacillus subtilis (strain 168))
Go to UniProtKB:  P50848
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

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A, B
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
F
Query on F

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B
FLUORIDE ION
F
KRHYYFGTRYWZRS-UHFFFAOYSA-M
 Ligand Interaction
ZN
Query on ZN

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A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

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A, B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.188 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 88.957α = 90.00
b = 149.002β = 90.00
c = 217.840γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
CNSphasing
MOSFLMdata reduction
Blu-Icedata collection
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-06-30
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance