2MLT

MELITTIN

• PDB DOI: https://doi.org/10.2210/pdb2MLT/pdb
• Entry: 2MLT supersedes: 1MLT

• Classification: TOXIN (HEMOLYTIC POLYPEPTIDE)
• Organism(s): Apis mellifera
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 1990-10-04 Released: 1990-10-15 
• Deposition Author(s): Eisenberg, D., Gribskov, M., Terwilliger, T.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work: 
  0.180 (DCC) 
• R-Value Observed: 
  0.198 (Depositor) 

Literature

Gribskov, M., Wesson, L., Eisenberg, D.

To be published.

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content

• Total Structure Weight: 5.89 kDa 
• Atom Count: 435 
• Modelled Residue Count: 54 
• Deposited Residue Count: 54 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
MELITTIN	A, B	27	Apis mellifera	Mutation(s): 0  Membrane Entity: Yes
UniProt
Find proteins for P01501 (Apis mellifera) Explore P01501  Go to UniProtKB:  P01501

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	C [auth B], D [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work:  0.180 (DCC) 
• R-Value Observed: 0.198 (Depositor) 

Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 60.832	α = 90
b = 38.293	β = 90
c = 42.211	γ = 90

Software Package:

Software Name	Purpose
PROFFT	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1990-10-15 
Deposition Author(s): Eisenberg, D., Gribskov, M., Terwilliger, T.C.
• This entry supersedes: 1MLT

Revision History  

• Version 1.0: 1990-10-15
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2011-11-16
  Changes: Atomic model
• Version 1.4: 2024-06-05
  Changes: Data collection, Database references, Derived calculations, Other
• Version 1.5: 2024-11-20
  Changes: Structure summary