A genomic library of Chroomonas (Cryptophyceae) DNA has been constructed in λEMBL4. Using a synthetic oligomer as a hybridization probe, a clone containing a phycoerythrin α-subunit has been obtained and sequenced. The principal α1 and α2-subunits of the holoprotein have been partially sequenced by sequential Edman degradation and differ from the DNA derived sequence, providing evidence for at least 3 α-subunit genes. The nucleotide sequence of the α-subunit gene is GC rich and encodes an N-terminal extension which is putatively thylakoid-lumen directing.
Bibliographical noteCorrigendum can be found at FEBS Letters, 279(2), p. 361, 1991.
- Amino acid sequence
- Chroomonas CS24
- Genomic clone
- Signal sequence