Table 1.

Thrombin formation and thrombin substrates

SubstrateInitiation phase
duration (min)
Thrombin
concentration at the
inception point (nM)
Thrombin levels at the
inception point
(%)
Rate of propagation
(nM/min)
Maximum levels
of products
(nM)
Product
generated
(%)
Osteonectin 1.9 ± 0.2 0.51 ± 0.18 0.06 6.8 ± 0.4       44.6 ± 6.7     77 
FXIIIa 2.2 ± 0.6 0.84 ± 0.28 0.099 10.3 ± 0.9 56.3 ± 3.4 62 
    (11.4 ± 1.0%/min) (62.5 ± 3.8%)  
FV 2.2 ± 0.4 0.84 ± 0.28 0.099 4.5 ± 1.3 12.3 ± 2.1 62 
    (22.4 ± 6.3%/min)  (61.7 ± 10.4%)  
FPA 2.5 ± 0.7 1.3 ± 0.4 0.15 2 700 ± 200 15 300 ± 1 300 100 
FPB 2.8 ± 0.8 1.7 ± 0.5 0.20 1 200 ± 100 5 800 ± 600 39 
Thrombin B chain 3.6 ± 0.2 7.0 ± 2.2 0.82 56.9 ± 2.1 494 ± 66 35 
TAT 4.6 ± 0.6 26 ± 6.2 3.1 83.9 ± 3.8 851 ± 53 61 
SubstrateInitiation phase
duration (min)
Thrombin
concentration at the
inception point (nM)
Thrombin levels at the
inception point
(%)
Rate of propagation
(nM/min)
Maximum levels
of products
(nM)
Product
generated
(%)
Osteonectin 1.9 ± 0.2 0.51 ± 0.18 0.06 6.8 ± 0.4       44.6 ± 6.7     77 
FXIIIa 2.2 ± 0.6 0.84 ± 0.28 0.099 10.3 ± 0.9 56.3 ± 3.4 62 
    (11.4 ± 1.0%/min) (62.5 ± 3.8%)  
FV 2.2 ± 0.4 0.84 ± 0.28 0.099 4.5 ± 1.3 12.3 ± 2.1 62 
    (22.4 ± 6.3%/min)  (61.7 ± 10.4%)  
FPA 2.5 ± 0.7 1.3 ± 0.4 0.15 2 700 ± 200 15 300 ± 1 300 100 
FPB 2.8 ± 0.8 1.7 ± 0.5 0.20 1 200 ± 100 5 800 ± 600 39 
Thrombin B chain 3.6 ± 0.2 7.0 ± 2.2 0.82 56.9 ± 2.1 494 ± 66 35 
TAT 4.6 ± 0.6 26 ± 6.2 3.1 83.9 ± 3.8 851 ± 53 61 

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