About: http://webisa.webdatacommons.org/31948775

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Second, the pH of 7.4 is maintained largely by amino acids, such as histidine (mostly in proteins and peptides), having a pK in that range; the pK for CO2/bicarbonate is a full pH unit lower (again, as you noted).
http://www.w3.org/ns/prov#wasQuotedFrom	realclimate.org