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The annotation and conditions in this rule are derived from the following entries: Q00914 (PSAC_CHLRE), P0A411 (PSAC_ANAVT), P0A415 (PSAC_THEEB), P0A416 (PSAC_SYNEL), P31087 (PSAC_SYNP2), P31085 (PSAC_SYNP6), P32422 (PSAC_SYNY3)

If a protein meets these conditions... i

Common conditions

    • Matches HAMAP signature MF_01303
    • gene location = Plastid
    • fragment ≠ the sequence is fragmented

Special conditions

    • gene location = Plastid; Chloroplast
    • taxon = Gloeobacter
    • gene location ≠ Plastid; Chloroplast
    • taxon ≠ Gloeobacter
    • gene location ≠ Plastid; Chloroplast
    • Subsequence at position 54 - 54 aligns to "C" in entry P0A415 (individually applies "Iron-sulfur 2 (4Fe-4S)")
    • Subsequence at position 48 - 48 aligns to "C" in entry P0A415 (individually applies "Iron-sulfur 2 (4Fe-4S)")
    • Subsequence at position 14 - 14 aligns to "C" in entry P0A415 (individually applies "Iron-sulfur 1 (4Fe-4S)")
    • Subsequence at position 21 - 21 aligns to "C" in entry P0A415 (individually applies "Iron-sulfur 2 (4Fe-4S)")
    • Subsequence at position 51 - 51 aligns to "C" in entry P0A415 (individually applies "Iron-sulfur 2 (4Fe-4S)")
    • Subsequence at position 17 - 17 aligns to "C" in entry P0A415 (individually applies "Iron-sulfur 1 (4Fe-4S)")
    • Subsequence at position 11 - 11 aligns to "C" in entry P0A415 (individually applies "Iron-sulfur 1 (4Fe-4S)")
    • Subsequence at position 58 - 58 aligns to "C" in entry P0A415 (individually applies "Iron-sulfur 1 (4Fe-4S)")

... then these annotations are applied i

<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namei

  • Recommended name:
    Photosystem I iron-sulfur center (EC:1.97.1.12)
    Alternative name(s):
    PsaC
    9 kDa polypeptide
    Photosystem I subunit VII
    PSI-C

<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: ‘Name’, ‘Synonyms’, ‘Ordered locus names’ and ‘ORF names’.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namei

  • Name:psaC

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction_section">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

  • The eukaryotic PSI reaction center is composed of at least 11 subunits.
  • The cyanobacterial PSI reaction center is composed of one copy each of PsaA,B,C,D,E,F,I,J,K,L,M and X, and forms trimeric complexes.
  • The cyanobacterial PSI reaction center is composed of one copy each of PsaA,B,C,D,E,F,I,J,K,L,M and X, and forms trimeric complexes.

<p>This section describes the function(s) of a protein.<p><a href='/help/function' target='_top'>More...</a></p>Functioni

  • Apoprotein for the two 4Fe-4S centers FA and FB of photosystem I (PSI); essential for photochemical activity. FB is the terminal electron acceptor of PSI, donating electrons to ferredoxin. The C-terminus interacts with PsaA/B/D and helps assemble the protein into the PSI complex. Required for binding of PsaD and PsaE to PSI. PSI is a plastocyanin-ferredoxin oxidoreductase, converting photonic excitation into a charge separation, which transfers an electron from the donor P700 chlorophyll pair to the spectroscopically characterized acceptors A0, A1, FX, FA and FB in turn.
  • Apoprotein for the two 4Fe-4S centers FA and FB of photosystem I (PSI); essential for photochemical activity. FB is the terminal electron acceptor of PSI, donating electrons to ferredoxin. The C-terminus interacts with PsaA/B/D and helps assemble the protein into the PSI complex. Required for binding of PsaD and PsaE to PSI. PSI is a plastocyanin/cytochrome c6-ferredoxin oxidoreductase, converting photonic excitation into a charge separation, which transfers an electron from the donor P700 chlorophyll pair to the spectroscopically characterized acceptors A0, A1, FX, FA and FB in turn.

<p>This subsection of the ‘Function’ section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

<p>This subsection of the ‘Function’ section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the ‘Description’ field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi

  • Iron-sulfur 2 (4Fe-4S) (to residues corresponding to position 54)
  • Iron-sulfur 2 (4Fe-4S) (to residues corresponding to position 48)
  • Iron-sulfur 1 (4Fe-4S) (to residues corresponding to position 14)
  • Iron-sulfur 2 (4Fe-4S) (to residues corresponding to position 21)
  • Iron-sulfur 2 (4Fe-4S) (to residues corresponding to position 51)
  • Iron-sulfur 1 (4Fe-4S) (to residues corresponding to position 17)
  • Iron-sulfur 1 (4Fe-4S) (to residues corresponding to position 11)
  • Iron-sulfur 1 (4Fe-4S) (to residues corresponding to position 58)

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO (Gene Ontology) termsi

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