Q6YXN7 (Q6YXN7_PHYPA) Unreviewed, UniProtKB/TrEMBL

Names and origin

Protein names

Recommended name:
Photosystem Q(B) protein HAMAP MF_01379
EC=1.10.3.9 HAMAP MF_01379

Alternative name(s):
32 kDa thylakoid membrane protein HAMAP MF_01379
Photosystem II protein D1 HAMAP MF_01379

Gene names

Name:

psbA HAMAP MF_01379 EMBL BAC85059.1

Encoded on

Plastid; Chloroplast EMBL BAC85059.1

Organism

Physcomitrella patens subsp. patens (Moss)

Taxonomic identifier

145481 [NCBI]

Taxonomic lineage

Eukaryota › Viridiplantae › Streptophyta › Embryophyta › Bryophyta › Bryophytina › Bryopsida › Funariidae › Funariales › Funariaceae › Physcomitrella

Protein attributes

Sequence length	353 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	This is one of the two reaction center proteins of photosystem II (PSII) By similarity. HAMAP MF_01379
Catalytic activity	2 H2O + 2 plastoquinone + 4 light = O2 + 2 plastoquinol. HAMAP MF_01379
Cofactor	The psbA/B heterodimer binds P680, the primary electron donor of PSII. It shares a non-heme iron and each subunit binds additional chlorophylls and pheophytin. PsbA provides most of the ligands for the Mn-cluster of the oxygen-evolving complex By similarity. HAMAP MF_01379
Subunit structure	The psbA/B heterodimer binds the P680 chlorophylls and subsequent electron acceptors. PSII consists of a core antenna complex that captures photons and an electron transfer chain that converts photonic excitation into a charge separation. PSII forms dimeric complexes By similarity. HAMAP MF_01379
Subcellular location	Plastid › chloroplast thylakoid membrane; Multi-pass membrane protein By similarity HAMAP MF_01379.
Miscellaneous	Herbicides such as atrazine, BNT, diuron or ioxynil bind to Q(B) and block electron transport By similarity. HAMAP MF_01379
Sequence similarities	Belongs to the reaction center pufL/M/psbA/D family. HAMAP MF_01379 RuleBase RU004331

Ontologies

Keywords
Biological process	Electron transport HAMAP MF_01379 RuleBase RU004332 Herbicide resistance HAMAP MF_01379 Photosynthesis Transport
Cellular component	Chloroplast EMBL BAC85059.1 Membrane Photosystem II HAMAP MF_01379 RuleBase RU004332 Plastid Thylakoid HAMAP MF_01379
Domain	Transmembrane Transmembrane helix HAMAP MF_01379
Ligand	Iron HAMAP MF_01379 RuleBase RU004332 Metal-binding HAMAP MF_01379 RuleBase RU004332
Molecular function	Oxidoreductase HAMAP MF_01379
PTM	Acetylation HAMAP MF_01379 Phosphoprotein HAMAP MF_01379
Technical term	Complete proteome Reference proteome
Gene Ontology (GO)
Biological process	photosynthetic electron transport in photosystem II Inferred from electronic annotation. Source: InterPro response to herbicide Inferred from electronic annotation. Source: UniProtKB-KW transport Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	chloroplast thylakoid membrane Inferred from electronic annotation. Source: UniProtKB-SubCell integral to membrane Inferred from electronic annotation. Source: UniProtKB-KW light-harvesting complex Inferred from electronic annotation. Source: InterPro photosystem II Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity Inferred from electronic annotation. Source: InterPro iron ion binding Inferred from electronic annotation. Source: HAMAP oxidoreductase activity Inferred from electronic annotation. Source: UniProtKB-KW
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Propeptide	345 – 353	9	By similarity HAMAP MF_01379
Regions
	Transmembrane	36 – 56	21	Helical; By similarity HAMAP MF_01379
	Transmembrane	109 – 129	21	Helical; By similarity HAMAP MF_01379
	Transmembrane	141 – 164	24	Helical; By similarity HAMAP MF_01379
	Transmembrane	192 – 218	27	Helical; By similarity HAMAP MF_01379
	Transmembrane	269 – 289	21	Helical; By similarity HAMAP MF_01379
Sites
	Metal binding	215	1	Iron; shared with heterodimeric partner By similarity HAMAP MF_01379
	Metal binding	272	1	Iron; shared with heterodimeric partner By similarity HAMAP MF_01379
	Site	344 – 345	2	Cleavage; by CtpA By similarity HAMAP MF_01379
Amino acid modifications
	Modified residue	2	1	N-acetylthreonine By similarity HAMAP MF_01379
	Modified residue	2	1	Phosphothreonine By similarity HAMAP MF_01379

Sequences

	Sequence		Length	Mass (Da)
	Q6YXN7 [UniParc]. Last modified July 5, 2004. Version 1. Checksum: 9E6C1AD6A7CA193D	FASTA	353	38,811
	10 20 30 40 50 60 MTATLERRES ASLWGRFCDW VTSTENRLYI GWFGVLMIPT LLTATSVFII AFIAAPPVDI 70 80 90 100 110 120 DGIREPVSGS LLYGNNIISA AIIPTSAAIG LHFYPIWEAA SVDEWLYNGG PYELIVLHFL 130 140 150 160 170 180 LGVACYMGRE WELSYRLGMR PWIAVAYSAP VAAATAVFLI YPIGQGSFSD GMPLGISGTF 190 200 210 220 230 240 NFMIVFQAEH NILMHPFHML GVAGVFGGSL FSAMHGSLVT SSLIRETTEN ESANAGYKFG 250 260 270 280 290 300 QEEETYNIVA AHGYFGRLIF QYASFNNSRS LHFFLAAWPV VGIWFTALGI STMAFNLNGF 310 320 330 340 350 NFNQSVVDSQ GRVINTWADI INRANLGMEV MHERNAHNFP LDLASVEAPS VNG

References

[1]

"Complete chloroplast DNA sequence of the moss Physcomitrella patens: evidence for the loss and relocation of rpoA from the chloroplast to the nucleus." Sugiura C., Kobayashi Y., Setsuyuki A., Sugita C., Sugita M. Nucleic Acids Res. 31:5324-5331(2003) [PubMed: 12954768] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBL GenBank DDBJ	AP005672 Genomic DNA. Translation: BAC85059.1.
RefSeq	NP_904209.1. NC_005087.1.
3D structure databases
ProteinModelPortal	Q6YXN7.
SMR	Q6YXN7. Positions 10-344.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	2546772.
KEGG	ppp:PhpapaCp046.
Phylogenomic databases
ProtClustDB	CHL00003.
Family and domain databases
HAMAP	MF_01379. PSII_PsbA_D1. [Tree]
InterPro	IPR000484. Photo_RC_L/M. IPR005867. PSII_PsbA/D1. [Graphical view]
Gene3D	G3DSA:1.20.85.10. Photo_RC_L/M. 1 hit.
KO	K02703.
Pfam	PF00124. Photo_RC. 1 hit. [Graphical view]
PRINTS	PR00256. REACTNCENTRE.
SUPFAM	SSF81483. Photo_RC_L/M. 1 hit.
TIGRFAMs	TIGR01151. PsbA. 1 hit.
PROSITE	PS00244. REACTION_CENTER. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

Q6YXN7_PHYPA

Accession

Primary (citable) accession number: Q6YXN7

Entry history

Integrated into UniProtKB/TrEMBL:	July 5, 2004
Last sequence update:	July 5, 2004
Last modified:	November 16, 2011
This is version 56 of the entry and version 1 of the sequence. [Complete history]

Entry status

Unreviewed (UniProtKB/TrEMBL)