Assertion: histidine | /r/HasProperty | preferred
Facets:
value: from among the available amino acids
type: OTHER
Source sentences:
text: One of the reasons histidine is preferred from among the available amino acids is its ability to impart substantial buffering effect in the physiologic range, despite the fact that its pK' a is approximately 6.1, which is outside the normal range one would look to for a buffer to maintain a physiologic pH. Most amino acids do not have a pK' in the range from which one would expect to choose a buffer which would be effective in maintaining a pH of approximately 7.4.