1CF0 | pdb_00001cf0

HUMAN PLATELET PROFILIN COMPLEXED WITH AN L-PRO10-IODOTYROSINE PEPTIDE

• PDB DOI: https://doi.org/10.2210/pdb1CF0/pdb

• Classification: COMPLEX (ACTIN-BINDING PROTEIN/PEPTIDE)
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 1999-03-23 Released: 1999-07-06 
• Deposition Author(s): Rozwarski, D.A., Mahoney, N.M., Almo, S.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 
  0.310 (Depositor), 0.293 (DCC) 
• R-Value Work: 
  0.210 (Depositor), 0.197 (DCC) 

Literature

Profilin binds proline-rich ligands in two distinct amide backbone orientations.

Mahoney, N.M., Rozwarski, D.A., Fedorov, E., Fedorov, A.A., Almo, S.C.

(1999) Nat Struct Biol 6: 666-671

• PubMed: 10404225 
• DOI: https://doi.org/10.1038/10722
• Primary Citation Related Structures: 
  1CF0, 1CJF


• PubMed Abstract: 
  

  The actin regulatory protein profilin is targeted to specific cellular regions through interactions with highly proline-rich motifs embedded within its binding partners. New X-ray crystallographic results demonstrate that profilin, like SH3 domains, can bind proline-rich ligands in two distinct amide backbone orientations. By further analogy with SH3 domains, these data suggest that non-proline residues in profilin ligands may dictate the polarity and register of binding, and the detailed organization of the assemblies involving profilin. This degeneracy may be a general feature of modules that bind proline-rich ligands, including WW and EVH1 domains, and has implications for the assembly and activity of macromolecular complexes involved in signaling and the regulation of the actin cytoskeleton.

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Organizational Affiliation: 
• Department of Biochemistry, Albert Einstein College of Medicine, Bronx, New York 10461, USA.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 30.82 kDa 
• Atom Count: 2,191 
• Modeled Residue Count: 285 
• Deposited Residue Count: 285 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (PROFILIN)	A, B	138	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P07737 (Homo sapiens) Explore P07737  Go to UniProtKB:  P07737
PHAROS:  P07737 GTEx:  ENSG00000108518

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (L-PRO10-IODOTYROSINE)	C	9	N/A	Mutation(s): 0

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
IYR	C	L-PEPTIDE LINKING	C9 H10 I N O3		TYR

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free:  0.310 (Depositor), 0.293 (DCC) 
• R-Value Work:  0.210 (Depositor), 0.197 (DCC) 

Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 68.29	α = 90
b = 97.65	β = 90
c = 38.97	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
XDS	data reduction
XSCALE	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-07-06 
Deposition Author(s): Rozwarski, D.A., Mahoney, N.M., Almo, S.C.

Revision History  

• Version 1.0: 1999-07-06
  Type: Initial release
  
• Version 1.1: 2007-10-16
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2023-12-27
  Changes: Data collection, Database references, Derived calculations
• Version 1.4: 2024-11-20
  Changes: Structure summary