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Table 6 Amino acid content (sulfur amino acids, arginine and aromatic amino acids). of human hair genes with a high sulfur content (approximately g/100 g hair)

From: Hair for brain trade-off, a metabolic bypass for encephalization

 

Keratin type

Sulphuric compoundsa

Arginine %

Aromatic compoundsb

MacKinnon et al. (1990).

High S

35.5%

2.4%

1.8%

Rogers et al. (2007).

KAPc

35.2%

  

Emonet et al. (1997).

High S

32%

4.3%

 

Yahagi et al. (2004).

KAP

33.4%

  

Rogers et al. (2001).

KAP

30.7%

  

Lee and Baden (1974).

Human p167

25.3%

6.3%

2.9%

Rogers et al. (2004).

KAP

25.1%

  

Shimomura et al. (2002).

KAP

25%

  

Median value

 

30.9%

  
  1. aSee footnote 1 on Table 7.
  2. bSee footnote 2 on Table 7.
  3. cKeratin associated proteins.