The physico-chemical and functional properties of Abarenicola affinis affinis (Ashworth) extracellular haemoglobin (erythrocruorin).

  title={The physico-chemical and functional properties of Abarenicola affinis affinis (Ashworth) extracellular haemoglobin (erythrocruorin).},
  author={Mei-Chu Chung and H. David Ellerton},
  journal={Biochimica et biophysica acta},
  volume={702 1},

Erythrocruorin subunits of Perinereis cultrifera Grube (Annelida, Polychaeta) compared with other erythrocruorins

The erythrocruorin dissociated at alkaline pH, and subjected to SDS PAGE in the presence of 2-mercaptoethanol, dissociates completely into low molecular mass subunits.

Aspects of respiratory function in the blood of the intertidal lugworm Abarenicola affinis (Polychaeta)

The oxygen transport characteristics of lugworm blood were studied over a range of temperature and pH values encompassing tidal and seasonally dependent measurements from worm burrows, suggesting a lack of specific CO2 binding by the blood.

Iron and heme contents of the extracellular hemoglobins and chlorocruorins of annelids.

Extracellular Hemoglobins from Annelids, and their Potential Use in Biotechnology

This chapter highlights the diversity of invertebrate hemoglobin structures, and gathers together up of 100 years of research data among invertebrates, which suggests a very ancient origin.

Nonvertebrate hemoglobins: functions and molecular adaptations.

The divergent and convergent evolutionary trends evident in the structures and functions of nonvertebrate Hbs appear to be adaptive in extending the inhabitable environment available to Hb-containing organisms.

Properties and Functions of Extracellular Heme Pigments

Among the respiratory pigments, heme pigments are by far the most widely distributed in nature, being present in plants (see Chap. 2, this Vol.) and some 33% of the presently known animal classes.



Comparison of chlorocruorin and annelid hemoglobin quaternary structures.

Molecular Architecture of Annelid Erythrocruorins

The respiratory protein, erythrocruorin, of the annelid Arenicola marina was investigated and a tentative model associating molecular mass of the native molecule, heme content, molecularmass of the polypeptide chains and functional properties is proposed.


Absorption spectra of the 58s oxygenated erythrocruorin and the deoxygenated and carbon monoxide derivatives have been obtained and may correspond to structures found in Levin's (1963) electron-microscope studies of other eryTHrocru orins.

Subunits of Limnodrilus erythrocruorin.

Properties of erythrocruorin from Cirraformia grandis.