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Entry version 77 (07 Apr 2021)
Sequence version 1 (01 Oct 1996)
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Protein

Phycobiliprotein ApcE

Gene

apcE

Organism
Porphyra purpurea (Red seaweed) (Ulva purpurea)
Status
Reviewed-Annotation score:

Annotation score:3 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>
-Protein inferred from homologyi <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

This protein is postulated to act both as terminal energy acceptor and as a linker polypeptide that stabilizes the phycobilisome architecture. May have intrinsic bilin lyase activity (By similarity).By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.<p><a href='/help/binding' target='_top'>More...</a></p>Binding sitei187Phycocyanobilin chromophore; covalent, via 1 linkSequence analysis1

<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

Molecular functionLyase
Biological processElectron transport, Photosynthesis, Transport
LigandBile pigment, Chromophore

<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:
Phycobiliprotein ApcE (EC:4.-.-.-)
Alternative name(s):
Anchor polypeptide
PBS-anchor protein
Phycobilisome linker polypeptide
<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:apcE
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates if the gene coding for the protein originates from the hydrogenosome, the mitochondrion, the nucleomorph, different plastids or a plasmid. The absence of this section means that the gene is located in one of the main chromosomal element(s).<p><a href='/help/encoded_on' target='_top'>More...</a></p>Encoded oniPlastid; Chloroplast
<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>OrganismiPorphyra purpurea (Red seaweed) (Ulva purpurea)
<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 identifieri2787 [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 lineageiEukaryotaRhodophytaBangiophyceaeBangialesBangiaceaePorphyra

<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

Keywords - Cellular componenti

Antenna complex, Chloroplast, Membrane, Phycobilisome, 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 polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00001992621 – 886Phycobiliprotein ApcEAdd BLAST886

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationi

Contains one covalently linked bilin chromophore. This protein autochromophorylates (Potential).Curated

<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

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SMRi
P51263

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

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family%5Fand%5Fdomains%5Fsection">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini244 – 424PBS-linker 1PROSITE-ProRule annotationAdd BLAST181
Domaini496 – 678PBS-linker 2PROSITE-ProRule annotationAdd BLAST183
Domaini695 – 876PBS-linker 3PROSITE-ProRule annotationAdd BLAST182

<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 phycobilisome linker protein family.PROSITE-ProRule annotation

Keywords - Domaini

Repeat

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
1.10.3130.20, 3 hits

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR009050, Globin-like_sf
IPR001297, PBS_linker_dom
IPR038255, PBS_linker_sf
IPR012128, Phycobilisome_asu/bsu

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00427, PBS_linker_poly, 3 hits
PF00502, Phycobilisome, 2 hits

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF46458, SSF46458, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS51445, PBS_LINKER, 3 hits

<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.

P51263-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MSIKASGGSP LARPQLYRTA SILTITQAEQ QDRFLQLGEL NQLVSFLNSG
60 70 80 90 100
QKRLEVADIL TKNANILVAR AADKIFVGGS AISYLERPQA AVIIAGDQSS
110 120 130 140 150
RDKINELSGN IQGDFGQSFR SLFNAGGATP PGFKPINVLR YGTTRMRKSL
160 170 180 190 200
RDLDWFLRYL TYAIVSGDPN ILSVNIRGLR ELIDNACSSA AAIVALREMR
210 220 230 240 250
RTALAIFEED IKGQDLVREY FNVVISEFEA PSLTDKLRKR ESTDLQGLRL
260 270 280 290 300
PQTYSQAGVS TPRFVMKSSL SADEKNTVVK ACYRQIFERD IAKTYDLSLS
310 320 330 340 350
NLESQVKNGQ ISIKEFIRSL GTSNIYRKQF YEPFVNSRAL ELAFRHFLGR
360 370 380 390 400
GPSSLEEFQK YFAILSATGL SGLVNAILNS AEYADYFGEE TVPYFRKLGE
410 420 430 440 450
EPQECRNWGP QIDLLNYSAP FRKVPQFITL FSDYKQSLPD QHPYGTGNDP
460 470 480 490 500
LSIQFGAIFP KENKDPRKRQ AIFGKDTRRI LVRRGPGIYN QISNPQVRPK
510 520 530 540 550
SAGSLGPKIF KLSNTLVATN SSANFENSVD VIAKVSYLRV FGREVYQEEK
560 570 580 590 600
LLLRPIESQL QDGQISVREF IRQLAKSSIF RSLYWEPLYI CKAIEYIHNR
610 620 630 640 650
LLGRPTYGRQ EINKYFDIAY KEGYYQVVDA IIDSPEYIET FGENVVPYER
660 670 680 690 700
YTTPAGIALR SLRPGIIDQR FKKVISSKSS RFVELGKVKE IRSSNDIQSR
710 720 730 740 750
IAQGVTALRD QSVIFDVNQN SSQEVLEQAL RAAYRQIFER DLNSFSIGGE
760 770 780 790 800
FLDIESSFLN KQINVKELIQ KLALSELYGK EFYQPYPNTK VIELGTKHIL
810 820 830 840 850
GRAPNNQAEI RFLNQILASK GLSTFVETLV NSSEYDSVYG TNTVPYRRFP
860 870 880
TLPAANFPNT ETLYNRLTKQ NVSVVVPSFK KVLGNQ
Length:886
Mass (Da):100,161
Last modified:October 1, 1996 - 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:iB21074C6D58C6203
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
U38804 Genomic DNA Translation: AAC08149.1

Protein sequence database of the Protein Information Resource

More...
PIRi
S73184

NCBI Reference Sequences

More...
RefSeqi
NP_053873.1, NC_000925.1

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
809892

<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
U38804 Genomic DNA Translation: AAC08149.1
PIRiS73184
RefSeqiNP_053873.1, NC_000925.1

3D structure databases

SMRiP51263
ModBaseiSearch...

Genome annotation databases

GeneIDi809892

Family and domain databases

Gene3Di1.10.3130.20, 3 hits
InterProiView protein in InterPro
IPR009050, Globin-like_sf
IPR001297, PBS_linker_dom
IPR038255, PBS_linker_sf
IPR012128, Phycobilisome_asu/bsu
PfamiView protein in Pfam
PF00427, PBS_linker_poly, 3 hits
PF00502, Phycobilisome, 2 hits
SUPFAMiSSF46458, SSF46458, 1 hit
PROSITEiView protein in PROSITE
PS51445, PBS_LINKER, 3 hits

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

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 nameiAPCE_PORPU
<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: P51263
<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: October 1, 1996
Last sequence update: October 1, 1996
Last modified: April 7, 2021
This is version 77 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)

<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

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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