Q41385 (PSAL_SPIOL) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Photosystem I reaction center subunit XI, chloroplastic
Short name=PSI-L

Alternative name(s):
PSI subunit V

Gene names

Name:

PSAL

Organism

Spinacia oleracea (Spinach)

Taxonomic identifier

3562 [NCBI]

Taxonomic lineage

cellular organisms › Eukaryota › Viridiplantae › Streptophyta › Streptophytina › Embryophyta › Tracheophyta › Euphyllophyta › Spermatophyta › Magnoliophyta › eudicotyledons › core eudicotyledons › Caryophyllales › Amaranthaceae › Spinacia

Protein attributes

Sequence length	216 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Evidence at protein level

General annotation (Comments)

Subcellular location	Plastid › chloroplast thylakoid membrane; Multi-pass membrane protein Probable.
Post-translational modification	The N-terminus is blocked.
Sequence similarities	Belongs to the PsaL family.

Ontologies

Keywords
Biological process	Photosynthesis
Cellular component	Chloroplast Membrane Photosystem I Plastid Thylakoid
Domain	Transit peptide Transmembrane Transmembrane helix
Technical term	3D-structure Direct protein sequencing
Gene Ontology (GO)
Biological_process	photosynthesis 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 photosystem I reaction center Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Sequence annotation (Features)

Feature key

Position(s)

Length

Description

Graphical view

Feature identifier

Molecule processing

Transit peptide

1 – 47

47

Chloroplast Potential

Chain

48 – 216

169

Photosystem I reaction center subunit XI, chloroplastic

PRO_0000029427

Regions

Topological domain

48 – 134

87

Stromal Potential

Transmembrane

135 – 155

21

Helical; Potential

Topological domain

156 – 188

33

Lumenal Potential

Transmembrane

189 – 209

21

Helical; Potential

Topological domain

210 – 216

7

Stromal Potential

Secondary structure

1

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216

Helix Strand Turn

Details...

Beta strand

55 – 58

4

Beta strand

61 – 64

4

Beta strand

66 – 68

3

Turn

74 – 76

3

Turn

79 – 85

7

Beta strand

87 – 92

6

Helix

97 – 107

11

Beta strand

110 – 113

4

Helix

114 – 118

5

Beta strand

127 – 129

3

Turn

134 – 138

5

Helix

139 – 143

5

Turn

144 – 152

9

Turn

171 – 173

3

Helix

181 – 195

15

Turn

197 – 199

3

Helix

200 – 204

5

Sequences

	Sequence		Length	Mass (Da)
	Q41385 [UniParc]. Last modified November 1, 1996. Version 1. Checksum: 603DCA983C7C383B	FASTA	216	22,937
	10 20 30 40 50 60 MAATTSPMAS QLKSGFTTKA LVVPKGISGP ALRGFPSPRR HTSFTVRAIK TEKPTYQVIQ 70 80 90 100 110 120 PLNGDPFIGG LETPVTSSPL IAWYLSNLPA YRTAVNPLLR GVEVGLAHGF LLVGPFVKAG 130 140 150 160 170 180 PLRNTEYAGA AGSLAAAGLV VILSMCLTMY GIASFKEGEP SIAPALTLTG RKKQPDQLQS 190 200 210 ADGWAKFTGG FFFGGVSGVT WACFLMYVLD LPYYFK

References

[1]	"Isolation and characterization of cDNA clones encoding a 18.8 kDa polypeptide, the product of the gene psaL, associated with photosystem I reaction center from spinach." Flieger K., Oelmueller R., Herrmann R.G. Plant Mol. Biol. 22:703-709(1993) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA]. Strain: cv. Monatol.
[2]	"Two new components of 9 and 14 kDa from spinach photosystem I complex." Ikeuchi M., Inoue Y. FEBS Lett. 280:332-334(1991) [PubMed] [Europe PMC] [Abstract] Cited for: PROTEIN SEQUENCE OF 158-178.
+	Additional computationally mapped references.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ

X64445 mRNA. Translation: CAA45775.1.

PIR

S35151.

3D structure databases

PDBe
RCSB PDB
PDBj

Entry	Method	Resolution (Å)	Chain	Positions	PDBsum
2O01	X-ray	3.40	L	53-216	[»]
2WSC	X-ray	3.30	L	1-216	[»]
2WSE	X-ray	3.49	L	1-216	[»]
2WSF	X-ray	3.48	L	1-216	[»]

ProteinModelPortal

Q41385.

SMR

Q41385. Positions 53-216.

ModBase

Search...

Protocols and materials databases

StructuralBiologyKnowledgebase

Search...

Family and domain databases

Gene3D

1.20.1240.10. 1 hit.

InterPro

IPR003757. PSI_PsaL.
[Graphical view]

Pfam

PF02605. PsaL. 1 hit.
[Graphical view]

ProDom

PD005947. PSI_PsaL. 1 hit.
[Graphical view] [Entries sharing at least one domain]

SUPFAM

SSF81568. PSI_PsaL. 1 hit.

ProtoNet

Search...

Other

EvolutionaryTrace

Q41385.

Entry information

Entry name

PSAL_SPIOL

Accession

Primary (citable) accession number: Q41385

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 15, 1998
Last sequence update:	November 1, 1996
Last modified:	April 3, 2013
This is version 61 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Plant Protein Annotation Program