Biological Assembly 1  

 3D View: Structure

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1BC 

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

Biological Assembly 2  

 3D View: Structure

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 6-mer - A2BC Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 6-mer - A2BC1D 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 34.91 kDa 
• Atom Count: 2525 
• Residue Count: 296 
• Unique protein chains: 3

1DM4

SER195ALA MUTANT OF HUMAN THROMBIN COMPLEXED WITH FIBRINOPEPTIDE A (7-16)

• DOI: 10.2210/pdb1DM4/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Mutation(s): Yes 


• Deposited: 1999-12-13 Released: 2000-01-19 
• Deposition Author(s): Krishnan, R., Sadler, E.J., Tulinsky, A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Observed: 0.169 

Literature

Structure of the Ser195Ala mutant of human alpha--thrombin complexed with fibrinopeptide A(7--16): evidence for residual catalytic activity.

Krishnan, R., Sadler, J.E., Tulinsky, A.

(2000) Acta Crystallogr D Biol Crystallogr 56: 406-410

• PubMed: 10739913 
• DOI: 10.1107/s0907444900001487
• Structures With Same Primary Citation


• PubMed Abstract: 
  

The Ser195Ala mutant of human alpha-thrombin was complexed with fibrinopeptide A(7-22) (FPA) in an effort to describe the (P1'-P6') post-cleavage binding subsites of the fibrinogen-recognition exosite and define more clearly the nature of the Michaelis complex and the scissile peptide bond bound at the catalytic site. The thrombin mutant, however, has residual catalytic activity and proteolysis occurred at the Arg16-Gly17 bond. Thus, the structure of the thrombin complex determined was that of FPA(7-16) bound at the active site, which is very similar to the ternary FPA(7-16)cmk-human thrombin-hirugen complex (r.m.s.d. approximately 0.4 A; Stubbs et al. , 1992). It is further shown by subsidiary experiments that the cleavage is the result of residual catalytic activity of the altered catalytic machinery.

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Organizational Affiliation: 

Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
PROTEIN (ALPHA THROMBIN:LIGHT CHAIN)	A	35	Homo sapiens	Mutation(s): 0  Gene Names: F2 EC: 3.4.21.5
Find proteins for P00734 (Homo sapiens) Go to UniProtKB:  P00734
NIH Common Fund Data Resources
PHAROS  P00734 GTEx  ENSG00000180210

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
PROTEIN (MUTANT ALPHA THROMBIN:HEAVY CHAIN)	B	260	Homo sapiens	Mutation(s): 1  Gene Names: F2 EC: 3.4.21.5
Find proteins for P00734 (Homo sapiens) Go to UniProtKB:  P00734
NIH Common Fund Data Resources
PHAROS  P00734 GTEx  ENSG00000180210

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details
PROTEIN (FIBRINOPEPTIDE)	C	11	N/A	Mutation(s): 0
Find proteins for P02671 (Homo sapiens) Go to UniProtKB:  P02671
NIH Common Fund Data Resources
PHAROS  P02671 GTEx  ENSG00000171560

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Observed: 0.169 
• Space Group: I 2₁ 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 135.1	α = 90
b = 135.1	β = 90
c = 135.1	γ = 90

Software Package:

Software Name	Purpose
AMoRE	phasing
PROFFT	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1999-12-13 
• Released Date: 2000-01-19 
Deposition Author(s): Krishnan, R., Sadler, E.J., Tulinsky, A.

Revision History 

• Version 1.0: 2000-01-19
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2011-09-07
  Changes: Structure summary
• Version 1.4: 2017-10-04
  Changes: Refinement description
• Version 1.5: 2018-03-14
  Changes: Database references