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XVI.B.1.a. D1
Sequences of D1
Sequence Similarity Search for D1
XVI.B.1.a. D1
The D1 and D2 proteins are believed to carry all cofactors needed for the primary photoreactions except the quinones. (for a general review see Akerlund, 1993). In analogy with the reaction center of the purple bacteria, it has been proposed that the D1 and D2 proteins form an interwined heterodimer complex, with P680 being located between the D1 and D2 subunits. the donor Z-tyrosine, the acceptor pheophytin, as well as the QB site are assigned to the D1 protein. This complex is called the active branch.
A query for D1 addressed to the various protein databases listed in the Biology Workbench, yielded 107 records which are depicted under Sequenced D1. These sequences can be used for Sequence Similarity Searches or other manipulations using one of several routines described in the Biology Workbench or elsewhere (see AntheproW which can be downloaded via anonymous ftp from: ibcp.fr; pub/Antheprot/Windows/anthe 3_1 directory). For example a Blast Sequence Similarity Search of maize D1 addressed to the Biology Workbench (SwissProt database) is depicted below.
Sequences of D1
Click on Sequences to view the sequences of D1 retrieved from various protein sequence databases by the Biology Workbench.
Sequence Similarity Search for D1
Click on Sequence Similarity Search to view the Blast sequence similarity search results of maize D1 as retrieved by the Biology workbench (SwissProt database).
References
- Akerlund, H-E (1993). Function and organization of photosystem II. In: Pigment-Protein Complexes In Plastids: Synthesis and Assembly . C. Sundqvist and M. Ryberg, (eds.), p 419-446, Academic Press, New York.