Skip Header

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

P05311

- PSAB_PEA

UniProt

P05311 - PSAB_PEA

(max 400 entries)x

Your basket is currently empty.

Select item(s) and click on "Add to basket" to create your own collection here
(400 entries max)

Protein

Photosystem I P700 chlorophyll a apoprotein A2

Gene

psaB

Organism
Pisum sativum (Garden pea)
Status
Reviewed - Annotation score: 4 out of 5- Experimental evidence at protein leveli

Functioni

PsaA and PsaB bind P700, the primary electron donor of photosystem I (PSI), as well as the electron acceptors A0, A1 and FX. PSI is a plastocyanin-ferredoxin oxidoreductase, converting photonic excitation into a charge separation, which transfers an electron from the donor P700 chlorophyll pair to the spectroscopically characterized acceptors A0, A1, FX, FA and FB in turn. Oxidized P700 is reduced on the lumenal side of the thylakoid membrane by plastocyanin.UniRule annotation

Catalytic activityi

Reduced plastocyanin + oxidized ferredoxin + light = oxidized plastocyanin + reduced ferredoxin.UniRule annotation

Cofactori

Note: P700 is a chlorophyll a/chlorophyll a' dimer, A0 is one or more chlorophyll a, A1 is one or both phylloquinones and FX is a shared 4Fe-4S iron-sulfur center.UniRule annotation

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi559 – 5591Iron-sulfur (4Fe-4S); shared with dimeric partnerUniRule annotation
Metal bindingi568 – 5681Iron-sulfur (4Fe-4S); shared with dimeric partnerUniRule annotation
Metal bindingi654 – 6541Magnesium (chlorophyll-a B1 axial ligand; P700 special pair)UniRule annotation
Metal bindingi662 – 6621Magnesium (chlorophyll-a B3 axial ligand)UniRule annotation
Binding sitei670 – 6701Chlorophyll-a B3UniRule annotation
Binding sitei671 – 6711Phylloquinone BUniRule annotation

GO - Molecular functioni

  1. 4 iron, 4 sulfur cluster binding Source: UniProtKB-KW
  2. chlorophyll binding Source: UniProtKB-KW
  3. electron carrier activity Source: UniProtKB-HAMAP
  4. magnesium ion binding Source: UniProtKB-HAMAP
  5. oxidoreductase activity Source: UniProtKB-KW

GO - Biological processi

  1. photosynthesis Source: UniProtKB-HAMAP
  2. protein-chromophore linkage Source: UniProtKB-KW
Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

Electron transport, Photosynthesis, Transport

Keywords - Ligandi

4Fe-4S, Chlorophyll, Chromophore, Iron, Iron-sulfur, Magnesium, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Photosystem I P700 chlorophyll a apoprotein A2UniRule annotation (EC:1.97.1.12UniRule annotation)
Alternative name(s):
PSI-BUniRule annotation
PsaBUniRule annotation
Gene namesi
Name:psaBUniRule annotation
Synonyms:psaA2
Encoded oniPlastid; Chloroplast
OrganismiPisum sativum (Garden pea)
Taxonomic identifieri3888 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsfabidsFabalesFabaceaePapilionoideaeFabeaePisum

Subcellular locationi

Plastidchloroplast thylakoid membrane UniRule annotation; Multi-pass membrane protein UniRule annotation

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei46 – 6924Helical; Name=IUniRule annotationAdd
BLAST
Transmembranei135 – 15824Helical; Name=IIUniRule annotationAdd
BLAST
Transmembranei175 – 19925Helical; Name=IIIUniRule annotationAdd
BLAST
Transmembranei273 – 29119Helical; Name=IVUniRule annotationAdd
BLAST
Transmembranei330 – 35324Helical; Name=VUniRule annotationAdd
BLAST
Transmembranei369 – 39527Helical; Name=VIUniRule annotationAdd
BLAST
Transmembranei417 – 43923Helical; Name=VIIUniRule annotationAdd
BLAST
Transmembranei517 – 53519Helical; Name=VIIIUniRule annotationAdd
BLAST
Transmembranei575 – 59622Helical; Name=IXUniRule annotationAdd
BLAST
Transmembranei643 – 66523Helical; Name=XUniRule annotationAdd
BLAST
Transmembranei707 – 72721Helical; Name=XIUniRule annotationAdd
BLAST

GO - Cellular componenti

  1. chloroplast thylakoid membrane Source: UniProtKB-HAMAP
  2. integral component of membrane Source: UniProtKB-KW
  3. photosystem I Source: UniProtKB-KW
Complete GO annotation...

Keywords - Cellular componenti

Chloroplast, Membrane, Photosystem I, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 734734Photosystem I P700 chlorophyll a apoprotein A2PRO_0000088630Add
BLAST

Proteomic databases

PRIDEiP05311.

Interactioni

Subunit structurei

The PsaA/B heterodimer binds the P700 chlorophyll special pair and subsequent electron acceptors. PSI consists of a core antenna complex that captures photons, and an electron transfer chain that converts photonic excitation into a charge separation. The eukaryotic PSI reaction center is composed of at least 11 subunits.UniRule annotation

Protein-protein interaction databases

DIPiDIP-60282N.

Structurei

Secondary structure

1
734
Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Beta strandi6 – 83Combined sources
Helixi12 – 143Combined sources
Helixi19 – 224Combined sources
Turni23 – 264Combined sources
Beta strandi32 – 365Combined sources
Helixi39 – 479Combined sources
Turni48 – 514Combined sources
Helixi52 – 6413Combined sources
Beta strandi67 – 748Combined sources
Turni75 – 784Combined sources
Beta strandi82 – 843Combined sources
Beta strandi101 – 1055Combined sources
Beta strandi109 – 1113Combined sources
Helixi120 – 1223Combined sources
Turni123 – 1264Combined sources
Helixi139 – 1468Combined sources
Helixi148 – 1558Combined sources
Beta strandi158 – 1614Combined sources
Helixi166 – 1683Combined sources
Turni173 – 1753Combined sources
Helixi178 – 1814Combined sources
Helixi183 – 19614Combined sources
Helixi199 – 2024Combined sources
Beta strandi212 – 2143Combined sources
Beta strandi217 – 2204Combined sources
Helixi224 – 2263Combined sources
Turni230 – 2334Combined sources
Beta strandi234 – 2363Combined sources
Beta strandi244 – 2496Combined sources
Turni263 – 2653Combined sources
Turni270 – 2745Combined sources
Helixi275 – 28713Combined sources
Beta strandi288 – 2914Combined sources
Beta strandi294 – 2963Combined sources
Beta strandi301 – 3055Combined sources
Beta strandi313 – 3164Combined sources
Helixi322 – 3265Combined sources
Turni327 – 3293Combined sources
Helixi333 – 3364Combined sources
Turni338 – 3403Combined sources
Helixi341 – 35111Combined sources
Turni352 – 3543Combined sources
Beta strandi358 – 3603Combined sources
Beta strandi362 – 3643Combined sources
Turni367 – 3693Combined sources
Beta strandi370 – 3734Combined sources
Turni374 – 3807Combined sources
Helixi381 – 3899Combined sources
Turni390 – 3967Combined sources
Turni400 – 4034Combined sources
Turni407 – 4148Combined sources
Helixi415 – 4184Combined sources
Turni419 – 4224Combined sources
Helixi423 – 44321Combined sources
Turni444 – 4474Combined sources
Helixi458 – 4625Combined sources
Turni463 – 4686Combined sources
Turni477 – 4815Combined sources
Beta strandi482 – 4854Combined sources
Beta strandi487 – 4893Combined sources
Beta strandi490 – 4967Combined sources
Beta strandi501 – 5044Combined sources
Helixi516 – 5227Combined sources
Turni523 – 5286Combined sources
Helixi529 – 53810Combined sources
Helixi540 – 5423Combined sources
Beta strandi547 – 5493Combined sources
Helixi550 – 5534Combined sources
Helixi563 – 5653Combined sources
Helixi573 – 5797Combined sources
Turni580 – 5889Combined sources
Helixi589 – 5935Combined sources
Beta strandi594 – 5996Combined sources
Beta strandi602 – 6043Combined sources
Helixi607 – 6115Combined sources
Beta strandi614 – 6163Combined sources
Turni617 – 6215Combined sources
Turni623 – 6253Combined sources
Helixi629 – 6324Combined sources
Turni633 – 6353Combined sources
Helixi636 – 6383Combined sources
Helixi645 – 65814Combined sources
Helixi662 – 6654Combined sources
Helixi669 – 67810Combined sources
Helixi682 – 6843Combined sources
Beta strandi688 – 6903Combined sources
Beta strandi694 – 6963Combined sources
Helixi704 – 7085Combined sources
Beta strandi709 – 7124Combined sources
Helixi713 – 72614Combined sources
Beta strandi729 – 7313Combined sources

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
1YO9model-B1-734[»]
2O01X-ray3.40B2-733[»]
2WSCX-ray3.30B1-734[»]
2WSEX-ray3.49B1-734[»]
2WSFX-ray3.48B1-734[»]
3LW5X-ray3.30B2-734[»]
ProteinModelPortaliP05311.
SMRiP05311. Positions 2-733.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP05311.

Family & Domainsi

Sequence similaritiesi

Belongs to the PsaA/PsaB family.UniRule annotation

Keywords - Domaini

Transmembrane, Transmembrane helix

Family and domain databases

Gene3Di1.20.1130.10. 1 hit.
HAMAPiMF_00482. PSI_PsaB.
InterProiIPR001280. PSI_PsaA/B.
IPR020586. PSI_PsaA/B_CS.
IPR006244. PSI_PsaB.
[Graphical view]
PfamiPF00223. PsaA_PsaB. 1 hit.
[Graphical view]
PIRSFiPIRSF002905. PSI_A. 1 hit.
PRINTSiPR00257. PHOTSYSPSAAB.
SUPFAMiSSF81558. SSF81558. 1 hit.
TIGRFAMsiTIGR01336. psaB. 1 hit.
PROSITEiPS00419. PHOTOSYSTEM_I_PSAAB. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P05311-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30         40         50
MALRIPRFSQ GIAQDPTTRR IWFGIATAHD FESHDDITEG RLYQNIFASH
60 70 80 90 100
FGQLAIIFLW TSGNLFHVAW QGNFEAWVQD PFHVRPIAHA IWDPHFGQPA
110 120 130 140 150
VEAFTRGGAL GPVNNAYSGV YQWWYTIGLR TNEDLYTGAI FLLFLSFISL
160 170 180 190 200
LAGWLHLQPK WKPSVSWFKN AESRLNHHLS GLFGVSSLAW AGHLVHVAIP
210 220 230 240 250
GSRGEYVRWN NFLDVLPYPQ GLGPLLTGQW NLYAQNPSSS NHLFGTTQGA
260 270 280 290 300
GTAILTILGG FHPQTQSLWL TDVAHHHLAI AFLFLIGGLM YRTNFGIGHS
310 320 330 340 350
IKYILEAHIP PGGRLGRGHK GLYDTINNSI HFQLGLALAS LGVITSLVAQ
360 370 380 390 400
HMYSLPAYAF IAQDFTTQAA LYTHHQYIAG FIMTGAFAHG PIFFIRDYNP
410 420 430 440 450
EQNADNVLAR MLEHKEAIIS HLSWASLFLG FHTLGLYVHN DVMLAFGTPE
460 470 480 490 500
KQILIEPIFA QWIQSAHGKT TYGFDIPLSS TNGPALNAGR NIWLPGWLNA
510 520 530 540 550
INENSNSLFL TIGPGDFLVH HAIALGLHTT TLILVKGALD ARGSKLMPDK
560 570 580 590 600
KDFGYSFPCD GPGRGGTCDI SAWDDFYLAV FWMLNTIGWV TFYWHWKHIT
610 620 630 640 650
LWRGNVSQFN ESSTYLMGWL RDYLWLNSSQ LINGITPLVC NSLSVWAWMF
660 670 680 690 700
LFGHLVWATG FMFLISWRGY WQELIETLAW AHERTPLANL IRWRDKPVAL
710 720 730
SIVQARLVGL VHFSVGYIFT YAAFLIASTS GKFG
Length:734
Mass (Da):82,412
Last modified:November 1, 1988 - v1
Checksum:i2ACF1F77D46FA8E7
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X05423 Genomic DNA. Translation: CAA29004.1.
PIRiS00704.
RefSeqiYP_003587537.1. NC_014057.1.

Genome annotation databases

GeneIDi9073070.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X05423 Genomic DNA. Translation: CAA29004.1 .
PIRi S00704.
RefSeqi YP_003587537.1. NC_014057.1.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
Entry Method Resolution (Å) Chain Positions PDBsum
1YO9 model - B 1-734 [» ]
2O01 X-ray 3.40 B 2-733 [» ]
2WSC X-ray 3.30 B 1-734 [» ]
2WSE X-ray 3.49 B 1-734 [» ]
2WSF X-ray 3.48 B 1-734 [» ]
3LW5 X-ray 3.30 B 2-734 [» ]
ProteinModelPortali P05311.
SMRi P05311. Positions 2-733.
ModBasei Search...
MobiDBi Search...

Protein-protein interaction databases

DIPi DIP-60282N.

Proteomic databases

PRIDEi P05311.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

GeneIDi 9073070.

Miscellaneous databases

EvolutionaryTracei P05311.

Family and domain databases

Gene3Di 1.20.1130.10. 1 hit.
HAMAPi MF_00482. PSI_PsaB.
InterProi IPR001280. PSI_PsaA/B.
IPR020586. PSI_PsaA/B_CS.
IPR006244. PSI_PsaB.
[Graphical view ]
Pfami PF00223. PsaA_PsaB. 1 hit.
[Graphical view ]
PIRSFi PIRSF002905. PSI_A. 1 hit.
PRINTSi PR00257. PHOTSYSPSAAB.
SUPFAMi SSF81558. SSF81558. 1 hit.
TIGRFAMsi TIGR01336. psaB. 1 hit.
PROSITEi PS00419. PHOTOSYSTEM_I_PSAAB. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

  1. "Sequence of two genes in pea chloroplast DNA coding for 84 and 82 kD polypeptides of the photosystem I complex."
    Lehmbeck J., Rasmussen O.F., Bookjans G.B., Jepsen B.R., Stummann B.M., Henningsen K.W.
    Plant Mol. Biol. 7:3-10(1986)
    [AGRICOLA] [Europe PMC]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].

Entry informationi

Entry nameiPSAB_PEA
AccessioniPrimary (citable) accession number: P05311
Entry historyi
Integrated into UniProtKB/Swiss-Prot: November 1, 1988
Last sequence update: November 1, 1988
Last modified: November 26, 2014
This is version 104 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3