Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Protein

Light-harvesting protein B-800/850 alpha chain

Gene
N/A
Organism
Rhodoblastus acidophilus (Rhodopseudomonas acidophila)
Status
Reviewed-Annotation score: Annotation score: 3 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 bindingi31Magnesium (bacteriochlorophyll axial ligand)1

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 alpha chain
Alternative name(s):
Antenna pigment protein alpha chain
OrganismiRhodoblastus acidophilus (Rhodopseudomonas acidophila)
Taxonomic identifieri1074 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaAlphaproteobacteriaRhizobialesBradyrhizobiaceaeRhodoblastus

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Topological domaini1 – 13CytoplasmicAdd BLAST13
Transmembranei14 – 34HelicalAdd BLAST21
Topological domaini35 – 53PeriplasmicAdd BLAST19

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_00000997871 – 53Light-harvesting protein B-800/850 alpha chainAdd BLAST53

Interactioni

Subunit structurei

The core complex is formed by 9 alpha and 9 beta chains that bind bacteriochlorophyll and carotenoid molecules, and is disposed around the reaction center. The non-pigmented gamma chains may constitute additional components (By similarity).By similarity

Structurei

Secondary structure

153
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Helixi6 – 8Combined sources3
Helixi12 – 37Combined sources26
Helixi40 – 46Combined sources7

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1KZUX-ray2.50A/D/G1-53[»]
1NKZX-ray2.00A/C/E1-53[»]
2FKWX-ray2.45A/C/E/G/I/K/M/O/R1-53[»]
ProteinModelPortaliP26789.
SMRiP26789.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP26789.

Family & Domainsi

Keywords - Domaini

Transmembrane, Transmembrane helix

Family and domain databases

Gene3Di4.10.220.20. 1 hit.
InterProiIPR000066. Antenna_a/b.
IPR018332. Antenna_alpha.
IPR002361. Antenna_alpha_CS.
[Graphical view]
PfamiPF00556. LHC. 1 hit.
[Graphical view]
PRINTSiPR00673. LIGHTHARVSTA.
SUPFAMiSSF56918. SSF56918. 1 hit.
PROSITEiPS00968. ANTENNA_COMP_ALPHA. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P26789-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MNQGKIWTVV NPAIGIPALL GSVTVIAILV HLAILSHTTW FPAYWQGGVK

KAA
Length:53
Mass (Da):5,654
Last modified:August 1, 1992 - v1
Checksum:i210F7597804C2E7F
GO

Sequence databases

PIRiS06365.

Cross-referencesi

Sequence databases

PIRiS06365.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1KZUX-ray2.50A/D/G1-53[»]
1NKZX-ray2.00A/C/E1-53[»]
2FKWX-ray2.45A/C/E/G/I/K/M/O/R1-53[»]
ProteinModelPortaliP26789.
SMRiP26789.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Miscellaneous databases

EvolutionaryTraceiP26789.

Family and domain databases

Gene3Di4.10.220.20. 1 hit.
InterProiIPR000066. Antenna_a/b.
IPR018332. Antenna_alpha.
IPR002361. Antenna_alpha_CS.
[Graphical view]
PfamiPF00556. LHC. 1 hit.
[Graphical view]
PRINTSiPR00673. LIGHTHARVSTA.
SUPFAMiSSF56918. SSF56918. 1 hit.
PROSITEiPS00968. ANTENNA_COMP_ALPHA. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiLHA4_RHOAC
AccessioniPrimary (citable) accession number: P26789
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 1, 1992
Last sequence update: August 1, 1992
Last modified: November 2, 2016
This is version 91 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, Direct protein sequencing

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references

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.