1T7S | pdb_00001t7s

Structural Genomics of Caenorhabditis elegans: Structure of BAG-1 protein

PDB DOI: https://doi.org/10.2210/pdb1T7S/pdb

Classification: CHAPERONE
Organism(s): Caenorhabditis elegans
Expression System: Escherichia coli
Mutation(s): Yes

Deposited: 2004-05-10 Released: 2004-05-18
Deposition Author(s): Symersky, J., Zhang, Y., Schormann, N., Li, S., Bunzel, R., Pruett, P., Luan, C.-H., Luo, M., Southeast Collaboratory for Structural Genomics (SECSG)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.80 Å
R-Value Free:
0.298 (Depositor), 0.304 (DCC)
R-Value Work:
0.224 (Depositor), 0.235 (DCC)
R-Value Observed:
0.224 (Depositor)

wwPDB Validation 3D Report Full Report

This is version 1.3 of the entry. See complete history.

Literature

Structural genomics of Caenorhabditis elegans: structure of the BAG domain.

Symersky, J., Zhang, Y., Schormann, N., Li, S., Bunzel, R., Pruett, P., Luan, C.H., Luo, M.

(2004) Acta Crystallogr D Biol Crystallogr 60: 1606-1610

PubMed: 15333932 Search on PubMed
DOI: https://doi.org/10.1107/S0907444904017603
Primary Citation of Related Structures:
1T7S

PubMed Abstract:
Binding of the BAG domain to the eukaryotic chaperone heat-shock protein (Hsp70) promotes ATP-dependent release of the protein substrate from Hsp70. Although the murine and human BAG domains have been shown to form an antiparallel three-helix bundle, the Caenorhabditis elegans BAG domain is formed by two antiparallel helices, while the third helix is extended away and stabilized by crystal-packing interactions. A small beta-sheet between helices 2 and 3 interferes with formation of the intramolecular three-helix bundle. However, intermolecular three-helix bundles are observed throughout the crystal packing and suggest that stable functional dimers and tetramers can be formed in solution. The structure may represent a new folding type of the BAG domain.

Organizational Affiliation

Southeast Collaboratory for Structural Genomics, Center for Biophysical Sciences and Engineering, University of Alabama at Birmingham, Birmingham, AL 35294, USA.

Macromolecule Content

Total Structure Weight: 32.3 kDa
Atom Count: 2,158
Modelled Residue Count: 258
Deposited Residue Count: 274
Unique protein chains: 1

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BAG-1 cochaperone	A, B	137	Caenorhabditis elegans	Mutation(s): 5 Gene Names: Bag-1
UniProt
Find proteins for O44739 (Caenorhabditis elegans) Explore O44739 Go to UniProtKB: O44739
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	O44739
Sequence Annotations Expand
Reference Sequence LOADING

Small Molecules

Modified Residues 1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE Query on MSE	A, B	L-PEPTIDE LINKING	C₅ H₁₁ N O₂ Se		MET

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.80 Å
R-Value Free: 0.298 (Depositor), 0.304 (DCC)
R-Value Work: 0.224 (Depositor), 0.235 (DCC)
R-Value Observed: 0.224 (Depositor)

Space Group: I 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 75.518	α = 90
b = 86.164	β = 90
c = 125.49	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
HKL-2000	data reduction
HKL-2000	data scaling
SOLVE	phasing
RESOLVE	phasing

Structure Validation

View Full Validation Report

Entry History

Deposition Data

Released Date: 2004-05-18

Deposition Author(s):

Southeast Collaboratory for Structural Genomics (SECSG)

Revision History (Full details and data files)

Version 1.0: 2004-05-18
Type: Initial release
Version 1.1: 2008-04-30
Changes: Version format compliance
Version 1.2: 2011-07-13
Changes: Version format compliance
Version 1.3: 2024-11-06
Changes: Data collection, Database references, Derived calculations, Structure summary