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Protein

Light-harvesting protein B-800/850 beta chain

Gene

pucB

Organism
Rhodobacter capsulatus (Rhodopseudomonas capsulata)
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Experimental evidence at protein leveli

Functioni

Antenna complexes are light-harvesting systems, which transfer the excitation energy to the reaction centers.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi20Magnesium (bacteriochlorophyll axial ligand)Sequence analysis1
Metal bindingi38Magnesium (bacteriochlorophyll axial ligand)Sequence analysis1

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Light-harvesting polypeptide

Keywords - Ligandi

Bacteriochlorophyll, Chlorophyll, Chromophore, Magnesium, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Light-harvesting protein B-800/850 beta chain
Alternative name(s):
Antenna pigment protein beta chain
LH-3B
Gene namesi
Name:pucB
OrganismiRhodobacter capsulatus (Rhodopseudomonas capsulata)
Taxonomic identifieri1061 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaAlphaproteobacteriaRhodobacteralesRhodobacteraceaeRhodobacter

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Topological domaini1 – 21CytoplasmicSequence analysisAdd BLAST21
Transmembranei22 – 44HelicalSequence analysisAdd BLAST23
Topological domaini45 – 49PeriplasmicSequence analysis5

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Antenna complex, Cell inner membrane, Cell membrane, Membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00000998231 – 49Light-harvesting protein B-800/850 beta chainAdd BLAST49

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei1N-formylmethionine; partial1 Publication1

Keywords - PTMi

Formylation

Interactioni

Subunit structurei

The core complex is formed by different alpha and beta chains, binding bacteriochlorophyll molecules, and arranged most probably in tetrameric structures disposed around the reaction center. The non-pigmented gamma chains may constitute additional components.

Protein-protein interaction databases

STRINGi272942.RCAP_rcc02530.

Structurei

3D structure databases

ProteinModelPortaliP07368.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiENOG4106FSN. Bacteria.
ENOG410Y2KC. LUCA.
HOGENOMiHOG000230332.

Family and domain databases

InterProiIPR000066. Antenna_a/b.
IPR002362. Antenna_beta.
IPR023623. Antenna_beta_CS.
[Graphical view]
PfamiPF00556. LHC. 1 hit.
[Graphical view]
PIRSFiPIRSF002900. Antenna_beta. 1 hit.
PRINTSiPR00674. LIGHTHARVSTB.
SUPFAMiSSF56918. SSF56918. 1 hit.
PROSITEiPS00969. ANTENNA_COMP_BETA. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P07368-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40 
MTDDKAGPSG LSLKEAEEIH SYLIDGTRVF GAMALVAHIL SAIATPWLG
Length:49
Mass (Da):5,155
Last modified:July 1, 1989 - v2
Checksum:i6CDDDE07B396211B
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
K02337 Genomic DNA. Translation: AAA26132.1.
M28510 Genomic DNA. Translation: AAA26161.1.
PIRiA21901. LBRF8C.
RefSeqiWP_013068239.1. NZ_LLVV01000006.1.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
K02337 Genomic DNA. Translation: AAA26132.1.
M28510 Genomic DNA. Translation: AAA26161.1.
PIRiA21901. LBRF8C.
RefSeqiWP_013068239.1. NZ_LLVV01000006.1.

3D structure databases

ProteinModelPortaliP07368.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi272942.RCAP_rcc02530.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Phylogenomic databases

eggNOGiENOG4106FSN. Bacteria.
ENOG410Y2KC. LUCA.
HOGENOMiHOG000230332.

Family and domain databases

InterProiIPR000066. Antenna_a/b.
IPR002362. Antenna_beta.
IPR023623. Antenna_beta_CS.
[Graphical view]
PfamiPF00556. LHC. 1 hit.
[Graphical view]
PIRSFiPIRSF002900. Antenna_beta. 1 hit.
PRINTSiPR00674. LIGHTHARVSTB.
SUPFAMiSSF56918. SSF56918. 1 hit.
PROSITEiPS00969. ANTENNA_COMP_BETA. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiLHB2_RHOCA
AccessioniPrimary (citable) accession number: P07368
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 1, 1988
Last sequence update: July 1, 1989
Last modified: October 5, 2016
This is version 93 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Direct protein sequencing

Documents

  1. SIMILARITY comments
    Index of protein domains and families

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.