Did you know ? If you order before Friday 14h we deliver 90PCT of the the time next Tuesday, GENTAUR another in time delivery

Pubmed ID :19219048
Publication Date : //

Cyanobacterial photosystem II at 2.9-A resolution and the role of quinones, lipids, channels and chloride.


Photosystem II (PSII) is a large homodimeric protein-cofactor complex located in the photosynthetic thylakoid membrane that acts as light-driven water:plastoquinone oxidoreductase. The crystal structure of PSII from Thermosynechococcus elongatus at 2.9-A resolution allowed the unambiguous assignment of all 20 protein subunits and complete modeling of all 35 chlorophyll a molecules and 12 carotenoid molecules, 25 integral lipids and 1 chloride ion per monomer. The presence of a third plastoquinone Q(C) and a second plastoquinone-transfer channel, which were not observed before, suggests mechanisms for plastoquinol-plastoquinone exchange, and we calculated other possible water or dioxygen and proton channels. Putative oxygen positions obtained from a Xenon derivative indicate a role for lipids in oxygen diffusion to the cytoplasmic side of PSII. The chloride position suggests a role in proton-transfer reactions because it is bound through a putative water molecule to the Mn(4)Ca cluster at a distance of 6.5 A and is close to two possible proton channels.

Authors : Guskov Albert , Kern Jan , Gabdulkhakov Azat , Broser Matthias , Zouni Athina , Saenger Wolfram ,

Related products :

Catalog number Product name Quantity
28-218 Chloride channel Kb (CLCNKB) is a member of the CLC family of voltage-gated chloride channels, which comprises at least 9 mammalian chloride channels. Each is believed to have 12 transmembrane domains 0.05 mg
28-217 Chloride channel Kb (CLCNKB) is a member of the CLC family of voltage-gated chloride channels, which comprises at least 9 mammalian chloride channels. Each is believed to have 12 transmembrane domains 0.05 mg
28-227 GABA is the major inhibitory neurotransmitter in the mammalian brain where it acts at GABA-A receptors, which are ligand-gated chloride channels. Chloride conductance of these channels can be modulate 0.05 mg
25-239 GABA is the major inhibitory neurotransmitter in the mammalian brain where it acts at GABA-A receptors, which are ligand-gated chloride channels. Chloride conductance of these channels can be modulate 0.05 mg
25-238 GABA is the major inhibitory neurotransmitter in the mammalian brain where it acts at GABA-A receptors, which are ligand-gated chloride channels. Chloride conductance of these channels can be modulate 0.05 mg
28-228 GABA is the major inhibitory neurotransmitter in the mammalian brain where it acts at GABA-A receptors, which are ligand-gated chloride channels. Chloride conductance of these channels can be modulate 0.1 mg
30-236 Voltage-gated proton (hydrogen) channels play an important role in cellular defense against acidic stress. They are unique among ion channels with respect to their extremely high selectivity, marked t 0.05 mg
28-263 Chloride intracellular channels are involved in chloride ion transport within various subcellular compartments. CLIon Channel5 specifically associates with the cytoskeleton of placenta microvilli. 0.05 mg
HB018 Total lipids Phosphovainilline Lipids - Lipides 2 x 125 ml
28-264 Chloride intracellular channels are involved in chloride ion transport within various subcellular compartments. CLIon Channel5 specifically associates with the cytoskeleton of placenta microvilli.Chlo 0.1 mg
28-564 TRPM3 belongs to the family of transient receptor potential (TRP) channels. TRP channels are cation-selective channels important for cellular calcium signaling and homeostasis. The protein encoded by 0.05 mg
28-563 TRPM3 encodes a protein that belongs to the family of transient receptor potential (TRP) channels. TRP channels are cation-selective channels important for cellular calcium signaling and homeostasis. 0.1 mg
28-308 ACCN4 belongs to the superfamily of acid-sensing ion channels, which are proton-gated, amiloride-sensitive sodium channels. These channels have been implicated in synaptic transmission, pain perceptio 0.05 mg
28-318 TRPM3 encodes a protein that belongs to the family of transient receptor potential (TRP) channels. TRP channels are cation-selective channels important for cellular calcium signaling and homeostasis. 0.1 mg
28-562 The product of the TRPM3 gene belongs to the family of transient receptor potential (TRP) channels. TRP channels are cation-selective channels important for cellular calcium signaling and homeostasis. 0.1 mg
31-106 Gamma-aminobutyric acid (GABA) is the major inhibitory neurotransmitter in the mammalian brain where it acts at GABA-A receptors, which are ligand-gated chloride channels. Chloride conductance of thes 0.1 mg
31-105 Gamma-aminobutyric acid (GABA) is the major inhibitory neurotransmitter in the mammalian brain where it acts at GABA-A receptors, which are ligand-gated chloride channels. Chloride conductance of thes 0.05 mg
26-484 Potassium channels play a role in many cellular processes including maintenance of the action potential, muscle contraction, hormone secretion, osmotic regulation, and ion flow. KCNK4 is one of the me 0.05 mg
30-583 Potassium channels play a role in many cellular processes including maintenance of the action potential, muscle contraction, hormone secretion, osmotic regulation, and ion flow. KCNK4 is one of the me 0.05 mg
25-237 CHRNA4 is a nicotinic acetylcholine receptor, which belongs to a superfamily of ligand-gated ion channels that play a role in fast signal transmission at synapses. These pentameric receptors can bind 0.05 mg
28-291 Calcium ions play a primary role in the regulation of sperm motility. This gene belongs to a family of putative cation channels that are specific to spermatozoa and localize to the flagellum. The prot 0.1 mg
28-292 Calcium ions play a primary role in the regulation of sperm motility. Anti-CATSPER2 belongs to a family of putative cation channels that are specific to spermatozoa and localize to the flagellum. The 0.1 mg
AS10 693 Antibody: HemH | protoporphyrin ferrochelatase (cyanobacterial), Immunogen: KLH-conjugated peptide derived from cyanobacterial ferrochelatase protein sequence, Host: rabbit, polyclonal, Confirmed reac 100
AS07 217 Antibody: FtsZ | procaryotic cell division GTPase, cyanobacterial, Immunogen: whole cyanobacterial (Anabaena PCC 7120) FtsZ protein Q3MC27 overexpressed in E.coli., Host: rabbit, polyclonal, Confirmed 200
25-801 LIN7C plays a role in establishing and maintaining the asymmetric distribution of channels and receptors at the plasma membrane of polarized cells. It forms membrane-associated multiprotein complexes 0.05 mg


 

GENTAUR Belgium BVBA BE0473327336
Voortstraat 49, 1910 Kampenhout BELGIUM
Tel 0032 16 58 90 45

Fax 0032 16 50 90 45
info@gentaur.com | Gentaur | Gentaur





GENTAUR Ltd.
Unicorn House, Station Cl
Hertfordshire, Potters Bar EN6 1TL
Whetstone London N20 9BH
Tel 020 3393 8531 Fax 020 8445 9411
uk@gentaur.com | Gentaur | Gentaur

 

 




GENTAUR France SARL
9, rue Lagrange, 75005 Paris
Tel 01 43 25 01 50

Fax 01 43 25 01 60
RCS Paris B 484 237 888

SIRET 48423788800017
RIB 30004 00187 00010092253 10
BNP PARIBAS PARIS PL MAUBERT BIC BNPAFRPPPRG
IBAN FR76 3000 4001 8700 0100 9225 310
france@gentaur.com | Gentaur | Gentaur

GENTAUR GmbH
Marienbongard 20
52062 Aachen Deutschland
Support Karolina Elandt
Tel: +49 0241 40 08 90 86, +49 0241 95 78 94 78, +49 0241 40 08 90 86
Fax: (+49) 241 56 00 47 88

Logistic :0241 40 08 90 86
Bankleitzahl 39050000
IBAN lautet DE8839050000107569353
Handelsregister Aachen HR B 16058
Umsatzsteuer-Identifikationsnummer *** DE 815175831
Steuernummer 201/5961/3925
de@gentaur.com | Gentaur | Gentaur

GENTAUR U.S.A
Genprice Inc, Logistics
547, Yurok Circle
San Jose, CA 95123
CA 95123
Tel (408) 780-0908,
Fax (408) 780-0908,
sales@genprice.com

Genprice Inc, Invoices and accounting
6017 Snell Ave, Ste 357
San Jose, CA 95123




GENTAUR Nederland BV
NL850396268B01 KVK nummer 52327027
Kuiper 1
5521 DG Eersel Nederland
Tel:  0208-080893  Fax: 0497-517897
nl@gentaur.com | Gentaur | Gentaur
IBAN: NL04 RABO 0156 9854 62   SWIFT RABONL2U






GENTAUR Spain
tel:0911876558
spain@gentaur.com | Gentaur | Gentaur






ГЕНТАУЪР БЪЛГАРИЯ
ID # 201 358 931 /BULSTAT
София 1000, ул. "Граф Игнатиев" 53 вх. В, ет. 2
Tel 0035924682280 Fax 0035924808322
e-mail: Sofia@gentaur.com | Gentaur | Gentaur
IBAN: BG11FINV91501014771636
BIC: FINVBGSF

GENTAUR Poland Sp. z o.o.


ul. Grunwaldzka 88/A m.2
81-771 Sopot, Poland
TEL Gdansk 058 710 33 44 FAX  058 710 33 48              

poland@gentaur.com | Gentaur | Gentaur

Other countries

Österreich +43720880899

Canada Montreal +15149077481

Ceská republika Praha +420246019719

Danmark +4569918806

Finland Helsset +358942419041

Magyarország Budapest +3619980547

Ireland Dublin+35316526556

Luxembourg+35220880274

Norge Oslo+4721031366

Sverige Stockholm+46852503438

Schweiz Züri+41435006251

US New York+17185132983

GENTAUR Italy
SRL IVA IT03841300167
Piazza Giacomo Matteotti, 6
24122 Bergamo Tel 02 36 00 65 93
Fax 02 36 00 65 94
italia@gentaur.com | Gentaur | Gentaur