Biological Assembly 1  

 3D View: Structure

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

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

Biological Assembly 2  

 3D View: Structure

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 34907.90 
• Atom Count: 2376 
• Residue Count: 306 
• 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): 1 


• 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: 2.5 Å

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.,Sect.D 56: 406-410

• PubMed: 10739913 


• 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

Find similar proteins by: Sequence  |  Structure

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 Gene View: F2 Go to UniProtKB:  P00734

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 Gene View: F2 Go to UniProtKB:  P00734

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details
PROTEIN (FIBRINOPEPTIDE)	C	11	Homo sapiens	Mutation(s): 0  Gene Names: FGA
Find proteins for P02671 (Homo sapiens) Go to Gene View: FGA Go to UniProtKB:  P02671

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
ACE	C	NON-POLYMER	C2 H4 O		--

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.5 Å
• Space Group: I 2₁ 3

Unit Cell:

Length (Å)	Angle (°)
a = 135.100	α = 90.00
b = 135.100	β = 90.00
c = 135.100	γ = 90.00

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
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance
• Version 1.3: 2011-09-07
  Type: Structure summary
• Version 1.4: 2017-10-04
  Type: Refinement description
• Version 1.5: 2018-03-14
  Type: Database references