Macromolecule Content

• Total Structure Weight: 24.88 kDa 
• Atom Count: 1752 
• Modelled Residue Count: 221 
• Deposited Residue Count: 221 
• Unique protein chains: 1

1LXL

NMR STRUCTURE OF BCL-XL, AN INHIBITOR OF PROGRAMMED CELL DEATH, MINIMIZED AVERAGE STRUCTURE

• DOI: 10.2210/pdb1LXL/pdb

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


• Deposited: 1996-04-04 Released: 1997-04-21 
• Deposition Author(s): Muchmore, S.W., Sattler, M., Liang, H., Meadows, R.P., Harlan, J.E., Yoon, H.S., Nettesheim, D., Chang, B.S., Thompson, C.B., Wong, S.L., Ng, S.C., Fesik, S.W.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Submitted: 1 

Literature

X-ray and NMR structure of human Bcl-xL, an inhibitor of programmed cell death.

Muchmore, S.W., Sattler, M., Liang, H., Meadows, R.P., Harlan, J.E., Yoon, H.S., Nettesheim, D., Chang, B.S., Thompson, C.B., Wong, S.L., Ng, S.L., Fesik, S.W.

(1996) Nature 381: 335-341

• PubMed: 8692274 
• DOI: 10.1038/381335a0
• Primary Citation of Related Structures:  
  1LXL, 1MAZ


• PubMed Abstract: 
  

THE Bcl-2 family of proteins regulate programmed cell death by an unknown mechanism. Here we describe the crystal and solution structures of a Bcl-2 family member, Bcl-xL (ref. 2). The structures consist of two central, primarily hydrophobic alpha-helices, which are surrounded by amphipathic helices. A 60-residue loop connecting helices alpha1 and alpha2 was found to be flexible and non-essential for anti-apoptotic activity. The three functionally important Bcl-2 homology regions (BH1, BH2 and BH3) are in close spatial proximity and form an elongated hydrophobic cleft that may represent the binding site for other Bcl-2 family members. The arrangement of the alpha-helices in Bcl-xL is reminiscent of the membrane translocation domain of bacterial toxins, in particular diphtheria toxin and the colicins. The structural similarity may provide a clue to the mechanism of action of the Bcl-2 family of proteins.

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Organizational Affiliation: 

Protein Crystallography, Pharmaceutical Discovery Division, Abbott Laboratories, Abbott Park, Illinois 60064, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BCL-XL	A	221	Homo sapiens	Mutation(s): 0  Gene Names: BCL2L1, BCL2L, BCLX
Find proteins for Q07817 (Homo sapiens) Explore Q07817  Go to UniProtKB:  Q07817
NIH Common Fund Data Resources
PHAROS:  Q07817 GTEx:  ENSG00000171552

Experimental Data & Validation

Experimental Data

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1996-04-04 
• Released Date: 1997-04-21 
Deposition Author(s): Muchmore, S.W., Sattler, M., Liang, H., Meadows, R.P., Harlan, J.E., Yoon, H.S., Nettesheim, D., Chang, B.S., Thompson, C.B., Wong, S.L., Ng, S.C., Fesik, S.W.

Revision History  

• Version 1.0: 1997-04-21
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance