respiratory pigment


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respiratory pigment

n.
Any of various colored conjugated proteins, such as hemoglobin, that occur in living organisms and function in oxygen transfer in cellular respiration.
References in periodicals archive ?
In mygalomorph spiders, respiration involves the movement of gases across an exchange surface and their combination with the circulating respiratory pigment hemocyanin (Anderson & Prestwich 1982).
There is evidence that the respiratory pigment hemocyanin can have antimicrobial, antifungal, and antiviral activity (Destoumieux-Garzon et al., 2001; Lee et al., 2003; Zhang et al., 2004).
This reserve represents the amount of oxygen that remains bound to the respiratory pigment at constant P[o.sub.2], even when pH falls to very low values.