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Table 2 Summary of dot blot evaluation of antibody specificity

From: DNA methylation and histone post-translational modification stability in post-mortem brain tissue

Peptide

Antibody

Total H3

Total H4

H3K27ac

H3K14ac

H4K5ac

H4K12ac

H3panAc

H3K4me3 (Abcam)

H3K4me3 (Active Motif)

H3K27me2

H3K27me3

H3K36me3

Histone mix

 

Strong

         

None

Unmodified H3

Strong

None

None

None

  

None

 

[Weak]

 

None

 

Unmodified H4

None

[None]

  

None

None

      

H3K4me

       

[Weak]

[Weak]

   

H3K4me2

       

[Weak]

[Strong]

[Weak]

  

H3K4me3

       

Strong

Strong

  

[Weak]

H3K9me

None

           

H3K9me2

 

None

       

[Weak]

  

H3K9me3

       

[Weak]

[Weak]

 

None

 

H3K27me

         

None

None

 

H3K27me2

         

[Weak]

None

 

H3K27me3

None

      

[Weak]

[Strong]

Strong

Strong

[Strong]

H3K36me

           

None

H3K36me2

         

[Weak]

 

[Strong]

H3K36me3

       

[Weak]

  

None

Strong

H3K14ac

  

None

Strong

None

None

Strong

     

H3K27ac

None

None

Strong

None

None

None

Weak

     

H4K5ac

None

None

  

Strong

[Weak]

None

     

H4K12ac

 

None

None

None

None

Strong

None

     

Summary

Specific

Specific*

Specific

Specific

Specific

Fairly specific

Specific

Fairly specific

Not very specific

Fairly specific

Specific

Fairly specific

  1. “Strong” indicates that the antibody bound to the peptide with strong affinity, “weak” indicates that the antibody bound but with weak affinity, and “none” indicates that the antibody did not bind to the peptide. A blank cell means not applicable, and square brackets [ ] represent an unexpected result
  2. *A discussion with the manufacturer suggested the unmodified H4 peptide may have been a bad or incorrect batch