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Entry version 119 (02 Jun 2021)
Sequence version 1 (01 May 2000)
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Protein

Photosystem I reaction center subunit III, chloroplastic

Gene

PSAF

Organism
Arabidopsis thaliana (Mouse-ear cress)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Participates in efficiency of electron transfer from plastocyanin to P700 (or cytochrome c553 in algae and cyanobacteria). This plastocyanin-docking protein contributes to the specific association of plastocyanin to PSI.

1 Publication

Miscellaneous

Plants lacking PSAF have altered thylakoid structure and are not viable.

<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 - Molecular functioni

GO - Biological processi

<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

Biological processPhotosynthesis

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
MetaCyc:MONOMER-1092

Protein family/group databases

Transport Classification Database

More...
TCDBi
5.B.4.1.1, the plant photosystem i supercomplex (psi) family

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 namesi
Recommended name:
Photosystem I reaction center subunit III, chloroplastic
Alternative name(s):
Light-harvesting complex I 17 kDa protein
PSI-F
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 namesi
Name:PSAF
Ordered Locus Names:At1g31330
ORF Names:T19E23.12
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiArabidopsis thaliana (Mouse-ear cress)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri3702 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliopsidaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000006548 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">proteome</a> can consist of several components.<br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome 1

Organism-specific databases

Arabidopsis Information Portal

More...
Araporti
AT1G31330

The Arabidopsis Information Resource

More...
TAIRi
locus:2197515, AT1G31330

<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

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular%5Flocation%5Fsection">'Subcellular location'</a> section describes the extent of a membrane-spanning region of the protein. It denotes the presence of both alpha-helical transmembrane regions and the membrane spanning regions of beta-barrel transmembrane proteins.<p><a href='/help/transmem' target='_top'>More...</a></p>Transmembranei147 – 167HelicalSequence analysisAdd BLAST21

Keywords - Cellular componenti

Chloroplast, Membrane, Photosystem I, Plastid, Thylakoid

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section describes the extent of a transit peptide.<p><a href='/help/transit' target='_top'>More...</a></p>Transit peptidei1 – 32ChloroplastSequence analysisAdd BLAST32
Transit peptidei33 – 67ThylakoidCuratedAdd BLAST35
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_000034209168 – 221Photosystem I reaction center subunit III, chloroplasticAdd BLAST154

Proteomic databases

PaxDb, a database of protein abundance averages across all three domains of life

More...
PaxDbi
Q9SHE8

PRoteomics IDEntifications database

More...
PRIDEi
Q9SHE8

ProteomicsDB: a multi-organism proteome resource

More...
ProteomicsDBi
226321

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
Q9SHE8

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

Gene expression databases

ExpressionAtlas, Differential and Baseline Expression

More...
ExpressionAtlasi
Q9SHE8, baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
Q9SHE8, AT

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

GO - Molecular functioni

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...
BioGRIDi
25256, 9 interactors

STRING: functional protein association networks

More...
STRINGi
3702.AT1G31330.1

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
Q9SHE8

Database of comparative protein structure models

More...
ModBasei
Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the PsaF family.Curated

Keywords - Domaini

Transit peptide, Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG502QTZ8, Eukaryota

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_098828_0_1_1

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q9SHE8

Identification of Orthologs from Complete Genome Data

More...
OMAi
RTSSIVC

Database of Orthologous Groups

More...
OrthoDBi
1476188at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q9SHE8

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
1.10.8.110, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR003666, PSI_PsaF
IPR036577, PSI_PsaF_sf

The PANTHER Classification System

More...
PANTHERi
PTHR34939, PTHR34939, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF02507, PSI_PsaF, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF81536, SSF81536, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

Q9SHE8-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MSLTIPANLV LNPRSNKSLT QSVPKSSARF VCSDDKSSSS TPQSMKAFSA
60 70 80 90 100
AVALSSILLS APMPAVADIS GLTPCKDSKQ FAKREKQQIK KLESSLKLYA
110 120 130 140 150
PESAPALALN AQIEKTKRRF DNYGKYGLLC GSDGLPHLIV NGDQRHWGEF
160 170 180 190 200
ITPGILFLYI AGWIGWVGRS YLIAISGEKK PAMKEIIIDV PLASRIIFRG
210 220
FIWPVAAYRE FLNGDLIAKD V
Length:221
Mass (Da):24,173
Last modified:May 1, 2000 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i7793D4BE8F3CA38C
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti7A → T in CAB52747 (Ref. 1) Curated1
Sequence conflicti7A → T in AAM65555 (Ref. 5) Curated1
Sequence conflicti31V → F in AAK96474 (PubMed:14593172).Curated1
Sequence conflicti41T → A in CAB52747 (Ref. 1) Curated1
Sequence conflicti41T → A in AAM65555 (Ref. 5) Curated1

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

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EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
AJ245629 mRNA Translation: CAB52747.1
AC007654 Genomic DNA Translation: AAF24595.1
CP002684 Genomic DNA Translation: AEE31342.1
AF360251 mRNA Translation: AAK25961.1
AY048220 mRNA Translation: AAK82483.1
AY051021 mRNA Translation: AAK93698.1
AF424564 mRNA Translation: AAL11558.1
AY062712 mRNA Translation: AAL32790.1
AY094015 mRNA Translation: AAM16171.1
BT000680 mRNA Translation: AAN31826.1
BT002099 mRNA Translation: AAN72110.1
AY052281 mRNA Translation: AAK96474.1
AY088009 mRNA Translation: AAM65555.1

NCBI Reference Sequences

More...
RefSeqi
NP_174418.1, NM_102871.5

Genome annotation databases

Ensembl plant genome annotation project

More...
EnsemblPlantsi
AT1G31330.1; AT1G31330.1; AT1G31330

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
840021

Gramene; a comparative resource for plants

More...
Gramenei
AT1G31330.1; AT1G31330.1; AT1G31330

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ath:AT1G31330

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AJ245629 mRNA Translation: CAB52747.1
AC007654 Genomic DNA Translation: AAF24595.1
CP002684 Genomic DNA Translation: AEE31342.1
AF360251 mRNA Translation: AAK25961.1
AY048220 mRNA Translation: AAK82483.1
AY051021 mRNA Translation: AAK93698.1
AF424564 mRNA Translation: AAL11558.1
AY062712 mRNA Translation: AAL32790.1
AY094015 mRNA Translation: AAM16171.1
BT000680 mRNA Translation: AAN31826.1
BT002099 mRNA Translation: AAN72110.1
AY052281 mRNA Translation: AAK96474.1
AY088009 mRNA Translation: AAM65555.1
RefSeqiNP_174418.1, NM_102871.5

3D structure databases

SMRiQ9SHE8
ModBaseiSearch...

Protein-protein interaction databases

BioGRIDi25256, 9 interactors
STRINGi3702.AT1G31330.1

Protein family/group databases

TCDBi5.B.4.1.1, the plant photosystem i supercomplex (psi) family

PTM databases

iPTMnetiQ9SHE8

Proteomic databases

PaxDbiQ9SHE8
PRIDEiQ9SHE8
ProteomicsDBi226321

Genome annotation databases

EnsemblPlantsiAT1G31330.1; AT1G31330.1; AT1G31330
GeneIDi840021
GrameneiAT1G31330.1; AT1G31330.1; AT1G31330
KEGGiath:AT1G31330

Organism-specific databases

AraportiAT1G31330
TAIRilocus:2197515, AT1G31330

Phylogenomic databases

eggNOGiENOG502QTZ8, Eukaryota
HOGENOMiCLU_098828_0_1_1
InParanoidiQ9SHE8
OMAiRTSSIVC
OrthoDBi1476188at2759
PhylomeDBiQ9SHE8

Enzyme and pathway databases

BioCyciMetaCyc:MONOMER-1092

Miscellaneous databases

Protein Ontology

More...
PROi
PR:Q9SHE8

Gene expression databases

ExpressionAtlasiQ9SHE8, baseline and differential
GenevisibleiQ9SHE8, AT

Family and domain databases

Gene3Di1.10.8.110, 1 hit
InterProiView protein in InterPro
IPR003666, PSI_PsaF
IPR036577, PSI_PsaF_sf
PANTHERiPTHR34939, PTHR34939, 1 hit
PfamiView protein in Pfam
PF02507, PSI_PsaF, 1 hit
SUPFAMiSSF81536, SSF81536, 1 hit

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiPSAF_ARATH
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: Q9SHE8
Secondary accession number(s): Q941C1, Q9SUI8
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 1, 2008
Last sequence update: May 1, 2000
Last modified: June 2, 2021
This is version 119 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Reference proteome

Documents

  1. Arabidopsis thaliana
    Arabidopsis thaliana: entries and gene names
  2. SIMILARITY comments
    Index of protein domains and families
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