Structure of PDB 6pnj Chain H

Receptor sequence

>6pnjH (length=738) Species: 98439 (Fischerella thermalis PCC 7521)

ATKFPKFSQDLANDPTTRRIFYAIATAHDFESHDGMTEENLYQRIFASHF
GHLAIIFLWASGILFHVAWQGNFEVWIKDPVHVRPIAHAIWDAQFGPGAI
KAFTQAGARNPVDICYSGVYHWWYTIGLRTNTELYVGALFLILLAAVFLF
AGWLHLQPRYRPNLGWFKNSEARLNHHLAGLFGVSSLAWAGHLVHVAIPE
SRGQHVGWDNFLSTPPHPAGLWAFFTGNWGAYAQNPDTAEHVFSTSQGAG
TAILTFLGGFHPQTQSLWLTDMAHHHLAIAVVLIIAGHMYRTNWRIGHSI
KEMMDSKTFFGRKVEGPFNLPHQGLYETVNNSLHFQLSLALACLGVASSL
TAQHMYSMPPYAFIAKDFTTMAALYTHHQYIAGFLMVGAFSHAAIFWIKD
YDPEQNKGNVLERVLKHKEAIIAHLSWVSLFLGFHTLGLYVHNDVEVAFG
AADKQILIEPVFAQFIQSANGKILYGFHTLLSNPDSIAFTAWPNHANVWL
PGWLDAINNGTNSLFLTIGPGDFYVHHAIALGLHVTTLILVKGALDARGS
KLMPDKKDFGYAFPCDGPGRGGTCDISAWDASYLAVFWMLNTLGWVTFYW
HWKHLSIWQGNVAQFNESSTYLMGWFRDYLWANSAQLINGYNPYGTNNLA
VWAWMFLFGHLAWAVSFMFLITWRGYWQELIETLAWAHEQTPLSFGYWRD
KPVALSIVQARLVGLTHFTVGYIATYGAFLIASTASKF

3D structure

• PDB: 6pnj The structure of Photosystem I acclimated to far-red light illuminates an ecologically important acclimation process in photosynthesis
• Chain: H
• Resolution: 3.19 Å

Enzymatic activity

• Enzyme Commision number: 1.97.1.12: photosystem I.

Interaction with ligand

Site #	Ligand	Ligand chain	Binding residues on receptor (original residue number in PDB)	Binding residues on receptor (residue number reindexed from 1)	Binding affinity
BS01	peptide	H	F319 V462 F463 F466	F318 V461 F462 F465
BS02	CL0	H	F627 W632	F626 W631
BS03	CLA	H	W655 L658 L662 W664 A665	W654 L657 L661 W663 A664
BS04	CLA	H	S427 S430 L431 G434 F435 L539 I540 L585 F588 W589	S426 S429 L430 G433 F434 L538 I539 L584 F587 W588
BS05	CLA	H	V446 F450	V445 F449
BS06	CLA	H	Q691 P693	Q690 P692
BS07	CLA	H	A424 S427	A423 S426
BS08	SF4	H	C566 G568 C575 W674 I708	C565 G567 C574 W673 I707
BS09	CLA	H	V442 F588 W589 N592 W596 L623 F627 W664	V441 F587 W588 N591 W595 L622 F626 W663
BS10	CLA	H	Y441 A529 W596 F599 W626 S635 I639 F657 H661 W664 Y723 T726 Y727 F730	Y440 A528 W595 F598 W625 S634 I638 F656 H660 W663 Y722 T725 Y726 F729
BS11	CLA	H	A665 V666 M669 Y677 W678	A664 V665 M668 Y676 W677
BS12	CLA	H	F5 F8 I25 A28 H29 F31 I56	F4 F7 I24 A27 H28 F30 I55
BS13	CLA	H	H29 F31 E32 I46 S49 H50 H53 R174 L334 Q337 L338 A341	H28 F30 E31 I45 S48 H49 H52 R173 L333 Q336 L337 A340
BS14	CLA	H	H53 W60 L345 I382 F385 L386	H52 W59 L344 I381 F384 L385
BS15	CLA	H	L59 W60 G63 F66 H67 W70 Q71	L58 W59 G62 F65 H66 W69 Q70
BS16	CLA	H	I64 A88 H89 D114 C116 Y117 S118 V652	I63 A87 H88 D113 C115 Y116 S117 V651
BS17	CLA	H	H89 I91 W92 D93 Q95 F96 F104 D114 A651 V652 W655	H88 I90 W91 D92 Q94 F95 F103 D113 A650 V651 W654
BS18	CLA	H	A94 Q95	A93 Q94
BS19	CLA	H	F47 F51 V148 A152 L155 H156 Y161 W167	F46 F50 V147 A151 L154 H155 Y160 W166
BS20	CLA	H	W167 H177 T293	W166 H176 T292
BS21	CLA	H	F47 H50 F51 L54 W167 N170 R174 H177 H178 L182 L284	F46 H49 F50 L53 W166 N169 R173 H176 H177 L181 L283
BS22	CLA	H	G128 F141 A189 W190 H193 H196 V197 G208 W209 F212	G127 F140 A188 W189 H192 H195 V196 G207 W208 F211
BS23	CLA	H	A189 H196 L213 P216 P217 G221 L222 L255 L278	A188 H195 L212 P215 P216 G220 L221 L254 L277
BS24	CLA	H	F225 W230 L255 F257 H275 L278 A279 V282	F224 W229 L254 F256 H274 L277 A278 V281
BS25	CLA	H	F257 L268 D272 H275 H276 I280 H355 M359	F256 L267 D271 H274 H275 I279 H354 M358
BS26	CLA	H	W123 S186 S187 W190 M273 H276 H277 P361 Y362	W122 S185 S186 W189 M272 H275 H276 P360 Y361
BS27	CLA	H	L175 L179 A287 M290 Y291 M304	L174 L178 A286 M289 Y290 M303
BS28	CLA	H	H177 A180 V185 H289 T293 W295	H176 A179 V184 H288 T292 W294
BS29	CLA	H	I286 H289 G298 H299	I285 H288 G297 H298
BS30	CLA	H	H299 M304 S307 T309 F310 F311 V315 F319	H298 M303 S306 T308 F309 F310 V314 F318
BS31	CLA	H	M304 M305 F319 L321 H323 V411	M303 M304 F318 L320 H322 V410
BS32	CLA	H	S171 R174 L175 H178 Y327 L340 A341 C344	S170 R173 L174 H177 Y326 L339 A340 C343
BS33	CLA	H	S350 Q354 Q380 M387 F391 L534 T537 T538	S349 Q353 Q379 M386 F390 L533 T536 T537
BS34	CLA	H	C344 Q354 H355 S358 M359 F516	C343 Q353 H354 S357 M358 F515
BS35	CLA	H	W60 Y117 S118 A374 T377 H378 Y381 I382 F385 W653 I724 G728	W59 Y116 S117 A373 T376 H377 Y380 I381 F384 W652 I723 G727
BS36	CLA	H	W60 A61 G119 W123 A189 L345 A348 S349 T352 M356 Y362 H378 H379	W59 A60 G118 W122 A188 L344 A347 S348 T351 M355 Y361 H377 H378
BS37	CLA	H	I25 A26 H29 D30 L338 L342 F385 G389 S392 H393 Y562 W580	I24 A25 H28 D29 L337 L341 F384 G388 S391 H392 Y561 W579
BS38	CLA	H	R414 H418 H425	R413 H417 H424
BS39	CLA	H	H425 W428	H424 W427
BS40	CLA	H	W428 F432 F435 H436	W427 F431 F434 H435
BS41	F6C	H	G439 V442 H443 E447 K455 I457	G438 V441 H442 E446 K454 I456
BS42	CLA	H	I467 A470 N471 L481 L482 W500 W504	I466 A469 N470 L480 L481 W499 W503
BS43	CLA	H	L481 I488 A489 A492 N495 A497 N498 W500	L480 I487 A488 A491 N494 A496 N497 W499
BS44	CLA	H	P494 N495	P493 N494
BS45	CLA	H	Y357 A464 I467 Q468 F516 L517 I519 H527 I530 V597 Y600 W601	Y356 A463 I466 Q467 F515 L516 I518 H526 I529 V596 Y599 W600
BS46	CLA	H	V429 F432 L433 P461 V462 F463 A464 F524 H527 H528	V428 F431 L432 P460 V461 F462 A463 F523 H526 H527
BS47	CLA	H	I422 L426 V429 A531 H535	I421 L425 V428 A530 H534
BS48	F6C	H	L685 H689 S695	L684 H688 S694
BS49	CLA	H	H689 Y698 W699 R700 P703	H688 Y697 W698 R699 P702
BS50	CLA	H	F659 L662 F670 V714 T717 H718 V721	F658 L661 F669 V713 T716 H717 V720
BS51	PQN	H	F22 M669 F670 T673 W674 R675 W678 A705 L706 A711	F21 M668 F669 T672 W673 R674 W677 A704 L705 A710

Gene Ontology

Molecular Function

• GO:0000287 magnesium ion binding
• GO:0009055 electron transfer activity
• GO:0016168 chlorophyll binding
• GO:0016491 oxidoreductase activity
• GO:0046872 metal ion binding
• GO:0051539 4 iron, 4 sulfur cluster binding

Biological Process

• GO:0015979 photosynthesis

Cellular Component

• GO:0009522 photosystem I
• GO:0009579 thylakoid
• GO:0016020 membrane
• GO:0031676 plasma membrane-derived thylakoid membrane
• GO:0042651 thylakoid membrane

External links

• PDB: RCSB:6pnj, PDBe:6pnj, PDBj:6pnj
• PDBsum: 6pnj
• UniProt: G6FMF0