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Protein

Reaction center protein L chain

Gene

pufL

Organism
Rhodobacter sphaeroides (strain ATCC 17023 / 2.4.1 / NCIB 8253 / DSM 158)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at protein leveli

Functioni

The reaction center is a membrane-bound complex that mediates the initial photochemical event in the electron transfer process of photosynthesis.By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi154Magnesium (bacteriochlorophyll b axial ligand)By similarity1
Metal bindingi174Magnesium (bacteriochlorophyll b axial ligand)By similarity1
Metal bindingi191IronBy similarity1
Binding sitei217Quinone BBy similarity1
Metal bindingi231IronBy similarity1

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Electron transport, Photosynthesis, Transport

Keywords - Ligandi

Bacteriochlorophyll, Chlorophyll, Chromophore, Iron, Magnesium, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Reaction center protein L chain
Alternative name(s):
Photosynthetic reaction center L subunit
Gene namesi
Name:pufL
Ordered Locus Names:RHOS4_18610
ORF Names:RSP_0257
OrganismiRhodobacter sphaeroides (strain ATCC 17023 / 2.4.1 / NCIB 8253 / DSM 158)
Taxonomic identifieri272943 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaAlphaproteobacteriaRhodobacteralesRhodobacteraceaeRhodobacter
Proteomesi
  • UP000002703 Componenti: Chromosome 1

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Topological domaini2 – 32CytoplasmicBy similarityAdd BLAST31
Transmembranei33 – 56HelicalBy similarityAdd BLAST24
Topological domaini57 – 83PeriplasmicBy similarityAdd BLAST27
Transmembranei84 – 112HelicalBy similarityAdd BLAST29
Topological domaini113 – 116CytoplasmicBy similarity4
Transmembranei117 – 139HelicalBy similarityAdd BLAST23
Topological domaini140 – 171PeriplasmicBy similarityAdd BLAST32
Transmembranei172 – 199HelicalBy similarityAdd BLAST28
Topological domaini200 – 225CytoplasmicBy similarityAdd BLAST26
Transmembranei226 – 251HelicalBy similarityAdd BLAST26
Topological domaini252 – 282PeriplasmicBy similarityAdd BLAST31

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Membrane, Reaction center

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Initiator methionineiRemovedBy similarity
ChainiPRO_00000904082 – 282Reaction center protein L chainAdd BLAST281

Interactioni

Subunit structurei

Reaction center is composed of four bacteriochlorophylls, two bacteriopheophytins, two ubiquinones, one iron, and three highly hydrophobic polypeptide chains (designated L, M, and H).By similarity

Protein-protein interaction databases

STRINGi272943.RSP_0257.

Structurei

Secondary structure

1282
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Turni5 – 7Combined sources3
Helixi8 – 10Combined sources3
Beta strandi17 – 19Combined sources3
Turni20 – 23Combined sources4
Helixi33 – 57Combined sources25
Turni62 – 64Combined sources3
Helixi72 – 74Combined sources3
Helixi81 – 83Combined sources3
Helixi85 – 112Combined sources28
Helixi117 – 133Combined sources17
Helixi135 – 140Combined sources6
Helixi143 – 145Combined sources3
Helixi153 – 163Combined sources11
Helixi168 – 170Combined sources3
Helixi172 – 199Combined sources28
Helixi210 – 221Combined sources12
Helixi227 – 250Combined sources24
Turni253 – 255Combined sources3
Helixi260 – 264Combined sources5
Helixi265 – 268Combined sources4
Helixi271 – 274Combined sources4
Beta strandi278 – 280Combined sources3

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
2WX5X-ray2.63L2-282[»]
4IN5X-ray2.20L1-282[»]
4IN6X-ray2.70L2-282[»]
4N7LX-ray2.85L2-282[»]
ProteinModelPortaliQ3J1A5.
SMRiQ3J1A5.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiENOG4105VGZ. Bacteria.
ENOG410XVH6. LUCA.
HOGENOMiHOG000230362.
KOiK08928.
OMAiPWLINIA.
OrthoDBiPOG091H150F.
PhylomeDBiQ3J1A5.

Family and domain databases

CDDicd09290. Photo-RC_L. 1 hit.
Gene3Di1.20.85.10. 2 hits.
InterProiIPR005871. Photo_RC_L.
IPR000484. Photo_RC_L/M.
[Graphical view]
PfamiPF00124. Photo_RC. 1 hit.
[Graphical view]
PRINTSiPR00256. REACTNCENTRE.
SUPFAMiSSF81483. SSF81483. 1 hit.
TIGRFAMsiTIGR01157. pufL. 1 hit.
PROSITEiPS00244. REACTION_CENTER. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

Q3J1A5-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MALLSFERKY RVPGGTLVGG NLFDFWVGPF YVGFFGVATF FFAALGIILI
60 70 80 90 100
AWSAVLQGTW NPQLISVYPP ALEYGLGGAP LAKGGLWQII TICATGAFVS
110 120 130 140 150
WALREVEICR KLGIGYHIPF AFAFAILAYL TLVLFRPVMM GAWGYAFPYG
160 170 180 190 200
IWTHLDWVSN TGYTYGNFHY NPAHMIAISF FFTNALALAL HGALVLSAAN
210 220 230 240 250
PEKGKEMRTP DHEDTFFRDL VGYSIGTLGI HRLGLLLSLS AVFFSALCMI
260 270 280
ITGTIWFDQW VDWWQWWVKL PWWANIPGGI NG
Length:282
Mass (Da):31,457
Last modified:January 23, 2007 - v3
Checksum:i044F4D3AF085B136
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti55V → E in AAF24304 (PubMed:10648776).Curated1
Sequence conflicti59T → S in AAF24304 (PubMed:10648776).Curated1
Sequence conflicti66S → F in AAF24304 (PubMed:10648776).Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF195122 Genomic DNA. Translation: AAF24304.1.
CP000143 Genomic DNA. Translation: ABA79429.1.
PIRiT50760.
RefSeqiWP_002720421.1. NZ_AKVW01000001.1.
YP_353330.1. NC_007493.2.

Genome annotation databases

EnsemblBacteriaiABA79429; ABA79429; RSP_0257.
GeneIDi3719399.
KEGGirsp:RSP_0257.
PATRICi23153650. VBIRhoSph57909_2200.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF195122 Genomic DNA. Translation: AAF24304.1.
CP000143 Genomic DNA. Translation: ABA79429.1.
PIRiT50760.
RefSeqiWP_002720421.1. NZ_AKVW01000001.1.
YP_353330.1. NC_007493.2.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
2WX5X-ray2.63L2-282[»]
4IN5X-ray2.20L1-282[»]
4IN6X-ray2.70L2-282[»]
4N7LX-ray2.85L2-282[»]
ProteinModelPortaliQ3J1A5.
SMRiQ3J1A5.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi272943.RSP_0257.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABA79429; ABA79429; RSP_0257.
GeneIDi3719399.
KEGGirsp:RSP_0257.
PATRICi23153650. VBIRhoSph57909_2200.

Phylogenomic databases

eggNOGiENOG4105VGZ. Bacteria.
ENOG410XVH6. LUCA.
HOGENOMiHOG000230362.
KOiK08928.
OMAiPWLINIA.
OrthoDBiPOG091H150F.
PhylomeDBiQ3J1A5.

Family and domain databases

CDDicd09290. Photo-RC_L. 1 hit.
Gene3Di1.20.85.10. 2 hits.
InterProiIPR005871. Photo_RC_L.
IPR000484. Photo_RC_L/M.
[Graphical view]
PfamiPF00124. Photo_RC. 1 hit.
[Graphical view]
PRINTSiPR00256. REACTNCENTRE.
SUPFAMiSSF81483. SSF81483. 1 hit.
TIGRFAMsiTIGR01157. pufL. 1 hit.
PROSITEiPS00244. REACTION_CENTER. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiRCEL_RHOS4
AccessioniPrimary (citable) accession number: Q3J1A5
Secondary accession number(s): P02954, Q9RFB9
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 21, 1986
Last sequence update: January 23, 2007
Last modified: November 2, 2016
This is version 78 of the entry and version 3 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

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.