apoprotein

General Information (Source: NCBI Gene,UniProt)

Text mining Term	apoprotein
UniProt ID	PSAB_CUSSA
Name	Photosystem I P700 chlorophyll a apoprotein A2 PsaB PSI-B
Gene Names	psaB
Taxonomy	Cuscuta sandwichiana

General annotation

Function	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.
Subcellular location	Plastid membrane; Multi-pass membrane protein (By similarity).

Function

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.

Subcellular location

Plastid membrane; Multi-pass membrane protein (By similarity).

Gene Ontology

GO:0016021	integral to membrane	CC
GO:0009522	photosystem I	CC
GO:0042170	plastid membrane	CC
GO:0015979	photosynthesis	BP
GO:0018298	protein-chromophore linkage	BP
GO:0006810	transport	BP
GO:0022900	electron transport chain	BP
GO:0051539	4 iron, 4 sulfur cluster binding	MF
GO:0046872	metal ion binding	MF
GO:0016168	chlorophyll binding	MF

Sequence

>gi|122219010|sp|Q49CB2.1|PSAB_CUSSA RecName: Full=Photosystem I P700 chlorophyll a apoprotein A2; AltName: Full=PSI-B; AltName: Full=PsaB
MVLRFPKFSQSLAQDPTTRRIWFGIATAHDFESHNEITEERLYQNIFASHFGQLAIIFLWTSGNLFHVAW
EGNFESWVQDPLHVRPIAHAIWDPHFGQPAVETFTRGGAVDPVNIAYSGVYQWWYTIGLRTKEDLYTGAL
FLFLISAISLIAGWLHLQPKWKPNIAWFKNAESRLNHHLAGLFGVSSLAWTGHLVHVAIPASRGEYVRWN
NLLDQLPHPQGLGPLFTGQWNLYAQNPDSSSHCFGTSQGAGTAILTFLGGFHPETQSLWLTDIAHHHLAI
TLLFFVAGHMYRTNFGIGHSLKNLLDAHIPPGGRLGRGHQGLYDTLNNSLHFQLGLALASLGVFTSLVAQ
HMYSLPSYAFIAQDFTTQAALYAHHQYIAGFIMTGAFAHGAIFFIRDYNPEQNKDNVLARILDHKQAIIS
HLSWVSLFLGFHTLGLYIHNDVMLAFGTPEKQILIEPIFAQWIQSAHGKTSYGFDVLLSSTNGPAVNAGQ
HLWLPEWLKAVNDTSNSLFLTIGPGDFLVHHAIALGLHTTTLILVKGALDARGSTLMPDKKEFGYSFPCD
GPGRGGTCDISAWDAFYLAVFWMLNTIGWVTFYWHWKHLTLWQDNVSQFNESSTYLMGWLRDYLWLNSSQ
LINGYNPFGMNSLSVWAWMFLFGHLVWATGFMFLISWRGYWQELIETLVWAHERTPLANLIHWRDKPVAL
SIVQARFVGLAHFSVGYIFTYAAFLIASTSGKFG

Database Cross Reference

Ensembl Gene
UniGene
PDB
RefSeq
Pfam	PF00223

PTID

apoprotein

General Information (Source: NCBI Gene,UniProt)

General annotation

Gene Ontology

Sequence

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Database Cross Reference