Macromolecule Content

• Total Structure Weight: 19.23 kDa 
• Atom Count: 1341 
• Residue Count: 164 
• Unique protein chains: 1

1G5M

HUMAN BCL-2, ISOFORM 1

• DOI: 10.2210/pdb1G5M/pdb

• Classification: APOPTOSIS
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2000-11-01 Released: 2001-03-21 
• Deposition Author(s): Petros, A.M., Medek, A., Nettesheim, D.G., Kim, D.H., Yoon, H.S., Swift, K., Matayoshi, E.D., Oltersdorf, T., Fesik, S.W.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Submitted: 1 

Literature

Solution structure of the antiapoptotic protein bcl-2.

Petros, A.M., Medek, A., Nettesheim, D.G., Kim, D.H., Yoon, H.S., Swift, K., Matayoshi, E.D., Oltersdorf, T., Fesik, S.W.

(2001) Proc Natl Acad Sci U S A 98: 3012-3017

• PubMed: 11248023 
• DOI: 10.1073/pnas.041619798
• Primary Citation of Related Structures:  
  1GJH, 1G5M


• PubMed Abstract: 
  

The structures of two isoforms of Bcl-2 that differ by two amino acids have been determined by NMR spectroscopy. Because wild-type Bcl-2 behaved poorly in solution, the structures were determined by using Bcl-2/Bcl-x(L) chimeras in which part of the putative unstructured loop of Bcl-2 was replaced with a shortened loop from Bcl-x(L). These chimeric proteins have a low pI compared with the wild-type protein and are soluble. The structures of the two Bcl-2 isoforms consist of 6 alpha-helices with a hydrophobic groove on the surface similar to that observed for the homologous protein, Bcl-x(L). Comparison of the Bcl-2 structures to that of Bcl-x(L) shows that although the overall fold is the same, there are differences in the structural topology and electrostatic potential of the binding groove. Although the structures of the two isoforms of Bcl-2 are virtually identical, differences were observed in the ability of the proteins to bind to a 25-residue peptide from the proapoptotic Bad protein and a 16-residue peptide from the proapoptotic Bak protein. These results suggest that there are subtle differences in the hydrophobic binding groove in Bcl-2 that may translate into differences in antiapoptotic activity for the two isoforms.

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Related Citations: 

• Analysis of the structure, transcripts, and products of bcl-2, the gene involved in human follicular lymphoma
  Tsujimoto, Y., Croce, C.M.
  (1986) Proc Natl Acad Sci U S A 83: 5214

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Organizational Affiliation: 

Pharmaceutical Discovery Division, Abbott Laboratories, Abbott Park, IL 60064, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (APOPTOSIS REGULATOR BCL-2 WITH PUTATIVE FLEXIBLE LOOP REPLACED WITH A PORTION OF APOPTOSIS REGULATOR BCL-X PROTEIN)	A	166	Homo sapiens	Mutation(s): 0  Gene Names: BCL2
Find proteins for P10415 (Homo sapiens) Explore P10415  Go to UniProtKB:  P10415
NIH Common Fund Data Resources
PHAROS:  P10415 GTEx:  ENSG00000171791

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Submitted: 1 
• OLDERADO: 1G5M Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-11-01 
• Released Date: 2001-03-21 
Deposition Author(s): Petros, A.M., Medek, A., Nettesheim, D.G., Kim, D.H., Yoon, H.S., Swift, K., Matayoshi, E.D., Oltersdorf, T., Fesik, S.W.

Revision History 

• Version 1.0: 2001-03-21
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance