3P0L

Human steroidogenic acute regulatory protein

• PDB DOI: https://doi.org/10.2210/pdb3P0L/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 2010-09-29 Released: 2010-11-24 
• Deposition Author(s): Lehtio, L., Siponen, M., Arrowsmith, C.H., Berglund, H., Busam, R.D., Collins, R., Dahlgren, L.G., Edwards, A.M., Flodin, S., Flores, A., Graslund, S., Hammarstrom, M., Hallberg, B.M., Herman, M.D., Johansson, A., Johansson, I., Kallas, A., Karlberg, T., Kotenyova, T., Moche, M., Nilsson, M.E., Nordlund, P., Nyman, T., Persson, C., Sagemark, J., Sundstrom, M., Svensson, L., Thorsell, A.G., Tresaugues, L., Van Den Berg, S., Weigelt, J., Welin, M., Schuler, H., Structural Genomics Consortium (SGC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.40 Å
• R-Value Free: 0.287 
• R-Value Work: 0.257 
• R-Value Observed: 0.260 

Literature

Comparative structural analysis of lipid binding START domains.

Thorsell, A.G., Lee, W.H., Persson, C., Siponen, M.I., Nilsson, M., Busam, R.D., Kotenyova, T., Schuler, H., Lehtio, L.

(2011) PLoS One 6: e19521-e19521

• PubMed: 21738568 
• DOI: https://doi.org/10.1371/journal.pone.0019521
• Primary Citation of Related Structures:  
  2PSO, 2R55, 3FO5, 3P0L


• PubMed Abstract: 
  

  Steroidogenic acute regulatory (StAR) protein related lipid transfer (START) domains are small globular modules that form a cavity where lipids and lipid hormones bind. These domains can transport ligands to facilitate lipid exchange between biological membranes, and they have been postulated to modulate the activity of other domains of the protein in response to ligand binding. More than a dozen human genes encode START domains, and several of them are implicated in a disease.

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Organizational Affiliation: 

Department of Medical Biochemistry and Biophysics, Structural Genomics Consortium, Karolinska Institutet, Stockholm, Sweden.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors and generated by PISA (software)

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 3 assigned by authors and generated by PISA (software)

Biological Assembly 4  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 4 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 98.82 kDa 
• Atom Count: 6,373 
• Modelled Residue Count: 808 
• Deposited Residue Count: 884 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Steroidogenic acute regulatory protein, mitochondrial	A, B, C, D	221	Homo sapiens	Mutation(s): 0  Gene Names: STAR, STARD1 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P49675 (Homo sapiens) Explore P49675  Go to UniProtKB:  P49675
PHAROS:  P49675 GTEx:  ENSG00000147465

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.40 Å
• R-Value Free: 0.287 
• R-Value Work: 0.257 
• R-Value Observed: 0.260 
• Space Group: P 6₃

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 144.13	α = 90
b = 144.13	β = 90
c = 101.03	γ = 120

Software Package:

Software Name	Purpose
MxCuBE	data collection
MOLREP	phasing
PHENIX	refinement
XDS	data reduction
XSCALE	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-11-24 
Deposition Author(s): Lehtio, L., Siponen, M., Arrowsmith, C.H., Berglund, H., Busam, R.D., Collins, R., Dahlgren, L.G., Edwards, A.M., Flodin, S., Flores, A., Graslund, S., Hammarstrom, M., Hallberg, B.M., Herman, M.D., Johansson, A., Johansson, I., Kallas, A., Karlberg, T., Kotenyova, T., Moche, M., Nilsson, M.E., Nordlund, P., Nyman, T., Persson, C., Sagemark, J., Sundstrom, M., Svensson, L., Thorsell, A.G., Tresaugues, L., Van Den Berg, S., Weigelt, J., Welin, M., Schuler, H., Structural Genomics Consortium (SGC)

Revision History  

• Version 1.0: 2010-11-24
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2011-09-21
  Changes: Database references
• Version 1.3: 2023-09-06
  Changes: Data collection, Database references, Refinement description