44. glutathione-glutaredoxin redox reactions

Similarity values obtained by G-SESAME

  GTT2 GTT1 GLR1 GPX1 HYR1 GPX2
GTT2  10.1860.2340.2340.234
GTT1    0.1860.2340.2340.234
GLR1      0.3790.3790.379
GPX1        0.9551
HYR1          0.955
GPX2           

Clustering results obtained by G-SESAME

Threshold Initial1.0000.9500.3700.230
Clustering
Result
GPX2

GPX1

HYR1

GLR1

GTT1

GTT2

GPX2
GPX1

HYR1

GLR1

GTT1
GTT2

GPX2
GPX1
HYR1

GLR1

GTT1
GTT2

GPX2
GPX1
HYR1
GLR1

GTT1
GTT2

GPX2
GPX1
HYR1
GLR1
GTT1
GTT2

Similarity values obtained by Resnik's method

  GTT2 GTT1 GLR1 GPX1 HYR1 GPX2
GTT2   5.4960.2810.2810.2810.281
GTT1     0.2810.2810.2810.281
GLR1       0.2810.2810.281
GPX1         6.0986.098
HYR1           6.036
GPX2            

Clustering results obtained by Resnik's method

Threshold Initial6.0985.3980.198
Clustering
Result
GTT1

GTT2

GPX2

HYR1

GPX1

GLR1

GTT1

GTT2

GPX2
HYR1
GPX1

GLR1

GTT1
GTT2

GPX2
HYR1
GPX1

GLR1

GTT1
GTT2
GPX2
HYR1
GPX1
GLR1

Analysis:

GPX1 and GPX2 are annotated by the same two molecular function terms in SGD database. They are GO:0004602: glutathione peroxidase activity and GO:0047066: phospholipid-hydroperoxide glutathione peroxidase activity. GTT1 and GTT2 are annotated by the same molecular function term GO:0004364: glutathione transferase activity.

Therefore, GPX1 and GPX2 have the same molecular functions. GTT1 and GTT2 have the same molecular function.

The similarity values and clustering results obtained by G-SESAME are consistent with the human perception.

However, ResnikĄ¯s method indicates the similarity value between GPX1 and GPX2 is larger than the similarity value between GTT1 and GTT2, in consistent with human perception.

On the other hand, HYR1 is annotated by three molecular function terms: GO:0004602: glutathione peroxidase activity, GO:0047066: phospholipid-hydroperoxide glutathione peroxidase activity, and GO:0008379: thioredoxin peroxidase activity.

Therefore, Therefore, HYR1 is slightly different from GPX1 and GPX2. This is also revealed by G-SESAME measurement.

However, the similarity value between HYR1 and GPX1 is larger than the similarity value between GTT1 and GTT2, which are annotated by an identical term. This is inconsistent with human perspectives.

Conclusion:

G-SESAME is better.