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Protein

Phycobiliprotein ApcE

Gene

apcE

Organism
Synechocystis sp. (strain PCC 6803 / Kazusa)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at protein leveli

Functioni

This protein is postulated to act both as terminal energy acceptor (by its phycobilin-like domains) and as a linker polypeptide (by its repeats and arms) that stabilizes the phycobilisome core architecture. Has intrinsic bilin lyase activity (By similarity).By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei190Phycocyanobilin chromophore (covalent; via 1 link)By similarity1

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Lyase

Keywords - Biological processi

Electron transport, Photosynthesis, Transport

Keywords - Ligandi

Bile pigment, Chromophore

Names & Taxonomyi

Protein namesi
Recommended name:
Phycobiliprotein ApcE (EC:4.-.-.-)
Alternative name(s):
Phycobilisome LCM core-membrane linker polypeptide
Phycobilisome core-membrane linker phycobiliprotein ApcE
Gene namesi
Name:apcE
Ordered Locus Names:slr0335
OrganismiSynechocystis sp. (strain PCC 6803 / Kazusa)
Taxonomic identifieri1111708 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaSynechococcalesMerismopediaceaeSynechocystis
Proteomesi
  • UP000001425 Componenti: Chromosome

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Membrane, Phycobilisome, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00004031851 – 896Phycobiliprotein ApcEAdd BLAST896

Post-translational modificationi

Contains one covalently linked bilin chromophore. This protein autochromophorylates (By similarity).By similarity

Proteomic databases

PRIDEiQ55544.

Interactioni

Subunit structurei

Heterodimer of ApcF (a variant beta-allophycocyanin). Phycobilisomes of this organism are composed of a two cylinder core, from which six rods radiate. The core is mainly composed of allophycocyanin alpha and beta chains and of minor components (By similarity).By similarity

Binary interactionsi

WithEntry#Exp.IntActNotes
trxAP522314EBI-862826,EBI-862916

Protein-protein interaction databases

IntActiQ55544. 7 interactors.

Structurei

Secondary structure

1896
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Turni255 – 257Combined sources3
Helixi275 – 290Combined sources16
Helixi296 – 298Combined sources3
Helixi300 – 310Combined sources11
Helixi316 – 325Combined sources10
Helixi327 – 333Combined sources7
Turni334 – 336Combined sources3
Helixi339 – 351Combined sources13
Helixi358 – 382Combined sources25
Helixi384 – 389Combined sources6
Turni390 – 393Combined sources4
Helixi732 – 747Combined sources16
Helixi753 – 759Combined sources7
Helixi761 – 768Combined sources8
Helixi774 – 782Combined sources9
Helixi785 – 791Combined sources7
Beta strandi793 – 795Combined sources3
Helixi797 – 808Combined sources12
Beta strandi809 – 811Combined sources3
Helixi816 – 829Combined sources14
Helixi831 – 839Combined sources9
Helixi842 – 847Combined sources6
Beta strandi850 – 852Combined sources3

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
2L06NMR-A254-401[»]
3OHWX-ray2.70A/B711-858[»]
3OSJX-ray2.30A/B/C/D254-400[»]
ProteinModelPortaliQ55544.
SMRiQ55544.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiQ55544.

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini247 – 427PBS-linker 1PROSITE-ProRule annotationAdd BLAST181
Domaini508 – 684PBS-linker 2PROSITE-ProRule annotationAdd BLAST177
Domaini703 – 881PBS-linker 3PROSITE-ProRule annotationAdd BLAST179

Sequence similaritiesi

Belongs to the phycobilisome linker protein family.PROSITE-ProRule annotation
Contains 3 PBS-linker domains.PROSITE-ProRule annotation

Keywords - Domaini

Repeat

Phylogenomic databases

HOGENOMiHOG000276791.
InParanoidiQ55544.
KOiK02096.
OMAiYSAPFRK.
PhylomeDBiQ55544.

Family and domain databases

Gene3Di1.10.490.20. 2 hits.
InterProiIPR009050. Globin-like.
IPR001297. PBS_linker_dom.
IPR012128. Phycobilisome_asu/bsu.
[Graphical view]
PfamiPF00427. PBS_linker_poly. 3 hits.
PF00502. Phycobilisome. 2 hits.
[Graphical view]
ProDomiPD000852. PBS_linker_poly. 3 hits.
[Graphical view] [Entries sharing at least one domain]
SUPFAMiSSF46458. SSF46458. 2 hits.
PROSITEiPS51445. PBS_LINKER. 3 hits.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Q55544-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSVKASGGSS LARPQLYQTV PVSAISQAEQ QDRFLEGSEL NELTAYFQSG
60 70 80 90 100
ALRLEIAETL TQNADLIVSR AANRIFTGGS PLSYLEKPVE RQPALVGASS
110 120 130 140 150
DSRNGSVTYA ESNGSGGLFG GLRSVFSSTG PIPPGFRPIN IARYGPSNMQ
160 170 180 190 200
KSLRDMSWFL RYTTYAIVAG DPNIIVVNTR GLKEVIENAC SIDATIVAIQ
210 220 230 240 250
EMRAASADYF RNNAQAKEIV LQYFDILLSE FKAPTPANKV RQGPSNDIQG
260 270 280 290 300
LELPQSYFNA AAKRQKYAMK PGLSALEKNA VIKAAYRQIF ERDITKAYSQ
310 320 330 340 350
SISYLESQVR NGDISMKEFV RRLAKSPLYR KQFFEPFINS RALELAFRHI
360 370 380 390 400
LGRGPSSREE VQKYFSIVSS GGLPALVDAL VDSQEYADYF GEETVPYLRG
410 420 430 440 450
LGVEAQECRN WGMQQDLFSY SAPFRKVPQF ITTFAQYDRP LPDQHVYGSG
460 470 480 490 500
NDPLEIQFGA IFPKETRNPS KRPAPFNKDT KRILIHRGPA VNNQVGNPSA
510 520 530 540 550
VGEFPGSLGA KVFRLNGGLP GAKVGKNTGT SVKFGESSTQ ALIRAAYRQV
560 570 580 590 600
FGRDLYEGQR LSVAEIQLEN GDISVREFIK RLAKSELFLK LYWAPHYVCK
610 620 630 640 650
AIEYMHRRLL GRPTYGRQEM NQYFDIASKQ GFYAVVEAMI DSKEYSDAFG
660 670 680 690 700
EDTVPYERYL TPGGLQMRSA RVGSLREDIG QRVDKEVTPR FVELGQVSAI
710 720 730 740 750
RTEPEIAYRS NQGVTRQRQQ TKVFKLVSTY DKVAVKNAIR AAYRQVFERD
760 770 780 790 800
LEPYIINSEF TALESKLSNN EINVKEFIEG LGTSELYMKE FYAPYPNTKV
810 820 830 840 850
IEMGTKHFLG RAPLNQKEIQ QYNQILASQG LKAFIGAMVN GMEYLQTFGE
860 870 880 890
DTVPYRRFPT LPAANFPNTE RLYNKLTKQD KELVVPSFTP VVKVGG
Length:896
Mass (Da):100,296
Last modified:November 1, 1996 - v1
Checksum:i05D4358C5F0BCD8C
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BA000022 Genomic DNA. Translation: BAA10042.1.
PIRiS76064.

Genome annotation databases

EnsemblBacteriaiBAA10042; BAA10042; BAA10042.
KEGGisyn:slr0335.
PATRICi23841504. VBISynSp132158_2300.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BA000022 Genomic DNA. Translation: BAA10042.1.
PIRiS76064.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
2L06NMR-A254-401[»]
3OHWX-ray2.70A/B711-858[»]
3OSJX-ray2.30A/B/C/D254-400[»]
ProteinModelPortaliQ55544.
SMRiQ55544.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

IntActiQ55544. 7 interactors.

Proteomic databases

PRIDEiQ55544.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiBAA10042; BAA10042; BAA10042.
KEGGisyn:slr0335.
PATRICi23841504. VBISynSp132158_2300.

Phylogenomic databases

HOGENOMiHOG000276791.
InParanoidiQ55544.
KOiK02096.
OMAiYSAPFRK.
PhylomeDBiQ55544.

Miscellaneous databases

EvolutionaryTraceiQ55544.

Family and domain databases

Gene3Di1.10.490.20. 2 hits.
InterProiIPR009050. Globin-like.
IPR001297. PBS_linker_dom.
IPR012128. Phycobilisome_asu/bsu.
[Graphical view]
PfamiPF00427. PBS_linker_poly. 3 hits.
PF00502. Phycobilisome. 2 hits.
[Graphical view]
ProDomiPD000852. PBS_linker_poly. 3 hits.
[Graphical view] [Entries sharing at least one domain]
SUPFAMiSSF46458. SSF46458. 2 hits.
PROSITEiPS51445. PBS_LINKER. 3 hits.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiAPCE_SYNY3
AccessioniPrimary (citable) accession number: Q55544
Entry historyi
Integrated into UniProtKB/Swiss-Prot: January 11, 2011
Last sequence update: November 1, 1996
Last modified: November 2, 2016
This is version 107 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families
  3. Synechocystis PCC 6803
    Synechocystis (strain PCC 6803): entries and gene names

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.