[Hemoglobins. XXVI. Analysis of the primary structure of the dimeric insect haemoglobin CTT VIIB (Erythrocruorin) from Chironomus thummi thummi, Diptera].

The dimeric haemoglobin CTT VIIB (Erythrocruorin) of Chironomus thummi thummi, Diptera, has been sequenced. Either globin or globin with maleic acid blocked lysines were cleaved with trypsin. The separation of peptides and the sequence analysis are given in detail.

[The sequence of a dimeric haemoglobin (component VIIB, Chironomus thummi thummi, Diptera) (author's transl)].

The primary structure of the symmetric dimeric haemoglobin from type alpha2 component CTT VIIB from the larvae of Chironomus thummi thummi is given. The sequence revealed the presence of at least two components differing in six positions. A comparison with human alpha-chains is discussed with respect to the primary structure, helices, and haem complex and haem contacts.