Protein Domain : IPR002361

Type:  Conserved_site Name:  Antenna complex, alpha subunit conserved site
Description:  The antenna complexes of photosynthetic bacteria function as light-harvesting systems that absorb light and transfer the excitation energy to the reaction centres. The antenna complexes usually comprise 2polypeptides (alpha- and beta-chains), 2-3 bacteriochlorophyll molecules and some carotenoids [, ].The alpha- and beta-chains are small proteins of 40-70 residues. Each has an N-terminal hydrophilic cytoplasmic domain, a single transmembrane (TM)region, and a small C-terminal hydrophilic periplasmic domain. In both chains, the TM domain houses a conserved His residue, presumed to beinvolved in binding the magnesium atom of a bacteriochlorophyll group. The beta-chains are characterised by a further histidine at the C-terminalextremity of the cytoplasmic domain, which is also thought to be involved in bacteriochlorophyll binding.This entry represents a conserved site found in the alpha subunit which includes the conserved histidine residue. Short Name:  Antenna_alpha_CS
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0 Child Features

0 Contains

1 Cross References

Identifier
PS00968

2 Found Ins

DB identifier Type Name
IPR000066 Domain Antenna complex, alpha/beta subunit
IPR018332 Family Antenna complex, alpha subunit

5 GO Annotations

GO Term Gene Name
GO:0045156 IPR002361
GO:0019684 IPR002361
GO:0016021 IPR002361
GO:0019866 IPR002361
GO:0030077 IPR002361

5 Ontology Annotations

GO Term Gene Name
GO:0045156 IPR002361
GO:0019684 IPR002361
GO:0016021 IPR002361
GO:0019866 IPR002361
GO:0030077 IPR002361

0 Parent Features

0 Proteins

2 Publications

First Author Title Year Journal Volume Pages PubMed ID
            1577009
            1460542