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Protein

Allophycocyanin beta chain

Gene

apcB

Organism
Arthrospira platensis (Spirulina platensis)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

Functioni

Light-harvesting photosynthetic bile pigment-protein from the phycobiliprotein complex. Allophycocyanin has a maximum absorption at approximately 650 nanometers.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei81Phycocyanobilin chromophore (covalent; via 1 link)1

GO - Biological processi

Keywordsi

Biological processElectron transport, Photosynthesis, Transport
LigandBile pigment, Chromophore

Names & Taxonomyi

Protein namesi
Recommended name:
Allophycocyanin beta chain
Gene namesi
Name:apcB
OrganismiArthrospira platensis (Spirulina platensis)
Taxonomic identifieri118562 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaOscillatoriophycideaeOscillatorialesMicrocoleaceaeArthrospira

Subcellular locationi

GO - Cellular componenti

Keywords - Cellular componenti

Membrane, Phycobilisome, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001991021 – 161Allophycocyanin beta chainAdd BLAST161

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei71N4-methylasparagine1 Publication1

Post-translational modificationi

Contains one covalently linked phycocyanobilin chromophore.

Keywords - PTMi

Methylation

PTM databases

iPTMnetiP72505

Interactioni

Subunit structurei

Heterodimer of an alpha and a beta chain.

Protein-protein interaction databases

IntActiP72505, 1 interactor
MINTiP72505

Structurei

Secondary structure

1161
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Helixi4 – 13Combined sources10
Turni14 – 16Combined sources3
Helixi21 – 59Combined sources39
Turni60 – 62Combined sources3
Turni64 – 66Combined sources3
Helixi75 – 98Combined sources24
Helixi102 – 107Combined sources6
Turni108 – 111Combined sources4
Helixi112 – 119Combined sources8
Helixi123 – 159Combined sources37

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1ALLX-ray2.30B1-161[»]
ProteinModelPortaliP72505
SMRiP72505
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP72505

Family & Domainsi

Sequence similaritiesi

Belongs to the phycobiliprotein family.Curated

Phylogenomic databases

eggNOGiENOG4105FBM Bacteria
ENOG410XR43 LUCA

Family and domain databases

CDDicd12126 APC_beta, 1 hit
Gene3Di1.10.490.20, 1 hit
InterProiView protein in InterPro
IPR006245 ApcB
IPR009050 Globin-like_sf
IPR012128 Phycobilisome_asu/bsu
IPR038719 Phycobilisome_asu/bsu_sf
PANTHERiPTHR34011:SF3 PTHR34011:SF3, 1 hit
PfamiView protein in Pfam
PF00502 Phycobilisome, 1 hit
PIRSFiPIRSF000081 Phycocyanin, 1 hit
SUPFAMiSSF46458 SSF46458, 1 hit
TIGRFAMsiTIGR01337 apcB, 1 hit

Sequencei

Sequence statusi: Complete.

P72505-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MQDAITSVIN SSDVQGKYLD RSAIQKLKAY FATGELRVRA ATTISANAAN
60 70 80 90 100
IVKEAVAKSL LYSDITRPGG NMYTTRRYAA CIRDLDYYLR YATYAMLAGD
110 120 130 140 150
PSILDERVLN GLKETYNSLG VPIGATVQAI QAMKEVTAGL VGADAGKEMG
160
IYFDYICSGL S
Length:161
Mass (Da):17,415
Last modified:February 1, 1997 - v1
Checksum:i0B8176CBBF011431
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti21R → A in BAA19986 (Ref. 2) Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X95898 Genomic DNA Translation: CAA65142.1
D86179 Genomic DNA Translation: BAA19986.1
PIRiS55558

Similar proteinsi

Entry informationi

Entry nameiAPCB_ARTPT
AccessioniPrimary (citable) accession number: P72505
Secondary accession number(s): O06675
Entry historyiIntegrated into UniProtKB/Swiss-Prot: December 15, 1998
Last sequence update: February 1, 1997
Last modified: April 25, 2018
This is version 95 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure
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Main funding by: National Institutes of Health