1DM4

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å

wwPDB Validation 3D Report Full Report


This is version 1.5 of the entry. See complete history

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 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 Michael ...

    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.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (ALPHA THROMBIN:LIGHT CHAIN)
A
35Homo sapiensMutation(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
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (MUTANT ALPHA THROMBIN:HEAVY CHAIN)
B
260Homo sapiensMutation(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
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (FIBRINOPEPTIDE)
C
11Homo sapiensMutation(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
IDChainsTypeFormula2D DiagramParent
ACE
Query on ACE
C
NON-POLYMERC2 H4 O

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • Space Group: I 21 3
Unit Cell:
Length (Å)Angle (°)
a = 135.100α = 90.00
b = 135.100β = 90.00
c = 135.100γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
PROFFTrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

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