Structure of PDB 7lx0 Chain b

Receptor sequence

>7lx0b (length=739) Species: 98439 (Fischerella thermalis PCC 7521)

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

3D structure

• PDB: 7lx0 Quantitative assessment of chlorophyll types in cryo-EM maps of photosystem I acclimated to far-red light
• Chain: b
• Resolution: 2.96 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	b	F319 N320 V462 F463 F466	F318 N319 V461 F462 F465
BS02	CL0	b	F627 L631 W632	F626 L630 W631
BS03	CLA	b	W655 L658 H661 L662 W664 A665	W654 L657 H660 L661 W663 A664
BS04	CLA	b	S430 L431 G434 F435 L438 L539 I540 L585 F588 W589	S429 L430 G433 F434 L437 L538 I539 L584 F587 W588
BS05	CLA	b	V446 F450	V445 F449
BS06	CLA	b	A424 S427 W428	A423 S426 W427
BS07	SF4	b	C566 G568 C575	C565 G567 C574
BS08	CLA	b	Y441 A529 W596 F599 L623 L631 S635 I639 F657 H661 W664 Y723 T726 Y727 F730	Y440 A528 W595 F598 L622 L630 S634 I638 F656 H660 W663 Y722 T725 Y726 F729
BS09	CLA	b	V442 D445 W589 N592 W596 L623 F627 W664 F719	V441 D444 W588 N591 W595 L622 F626 W663 F718
BS10	CLA	b	A665 V666 M669 Y677 W678	A664 V665 M668 Y676 W677
BS11	CLA	b	F5 F8 I25 A28 H29 F31 H34 I56	F4 F7 I24 A27 H28 F30 H33 I55
BS12	CLA	b	F31 I46 S49 H50 H53 R174 L334 Q337 L338 A341	F30 I45 S48 H49 H52 R173 L333 Q336 L337 A340
BS13	CLA	b	H29 H53 W60	H28 H52 W59
BS14	CLA	b	L59 W60 G63 F66 H67 W70	L58 W59 G62 F65 H66 W69
BS15	CLA	b	I64 A88 H89 D114 C116 Y117 S118 V652 W653	I63 A87 H88 D113 C115 Y116 S117 V651 W652
BS16	CLA	b	I91 W92 D93 Q95 F96 F104 D114 A651 V652 W655	I90 W91 D92 Q94 F95 F103 D113 A650 V651 W654
BS17	CLA	b	F47 F51 F149 A152 L155 H156 Y161 W167	F46 F50 F148 A151 L154 H155 Y160 W166
BS18	CLA	b	W167 H177	W166 H176
BS19	CLA	b	F47 H50 F51 L54 W167 R174 H177 H178 L182 F183	F46 H49 F50 L53 W166 R173 H176 H177 L181 F182
BS20	CLA	b	G128 E134 F141 A189 W190 H193 H196 V197 G208 W209 F212	G127 E133 F140 A188 W189 H192 H195 V196 G207 W208 F211
BS21	CLA	b	L188 A189 A191 V195 H196 T215 P216 P217 G221 L222 L255 L278	L187 A188 A190 V194 H195 T214 P215 P216 G220 L221 L254 L277
BS22	CLA	b	F225 W230 L255 F257 H275 L278 A279 V282 V499	F224 W229 L254 F256 H274 L277 A278 V281 V498
BS23	CLA	b	F257 L268 D272 H275 H276 I280 H355 M359 W504	F256 L267 D271 H274 H275 I279 H354 M358 W503
BS24	CLA	b	W123 F183 S186 S187 W190 M273 H276 H277 I280 L351 M356 P361 Y362	W122 F182 S185 S186 W189 M272 H275 H276 I279 L350 M355 P360 Y361
BS25	CLA	b	L179 A287 M290 Y291 M304	L178 A286 M289 Y290 M303
BS26	CLA	b	N176 H177 A180 V185 H289 T293 W295	N175 H176 A179 V184 H288 T292 W294
BS27	CLA	b	I286 H289 I297 G298 H299	I285 H288 I296 G297 H298
BS28	CLA	b	H299 E303 M304 S307 T309 F310 F311 F319	H298 E302 M303 S306 T308 F309 F310 F318
BS29	CLA	b	M305 F319 L321 H323 L326 V411	M304 F318 L320 H322 L325 V410
BS30	CLA	b	S171 R174 L175 H178 Y327 L340 C344	S170 R173 L174 H177 Y326 L339 C343
BS31	CLA	b	S350 Q380 M387 F391 L534 T537 T538 M590	S349 Q379 M386 F390 L533 T536 T537 M589
BS32	CLA	b	C344 L351 Q354 H355 S358 M359 F516	C343 L350 Q353 H354 S357 M358 F515
BS33	CLA	b	W60 S118 A374 T377 H378 Y381 I382 F385 I724	W59 S117 A373 T376 H377 Y380 I381 F384 I723
BS34	CLA	b	F58 W60 S118 G119 W123 A348 S349 T352 M356 Y362 L375 H378 H379 I382	F57 W59 S117 G118 W122 A347 S348 T351 M355 Y361 L374 H377 H378 I381
BS35	CLA	b	I25 A26 H29 D30 L338 L342 F385 G389 S392 H393 I396 Y562 W580	I24 A25 H28 D29 L337 L341 F384 G388 S391 H392 I395 Y561 W579
BS36	CLA	b	R414 H418 H425	R413 H417 H424
BS37	CLA	b	H425 W428	H424 W427
BS38	CLA	b	W428 F432 F435 H436	W427 F431 F434 H435
BS39	F6C	b	G439 L440 H443 V446 E447 K455 I457	G438 L439 H442 V445 E446 K454 I456
BS40	CLA	b	I467 A470 N471 L481 L482 W500 W504	I466 A469 N470 L480 L481 W499 W503
BS41	CLA	b	L481 I488 A489 A492 N495 N498 W500	L480 I487 A488 A491 N494 N497 W499
BS42	CLA	b	Y357 A464 I467 Q468 F516 L517 I519 H527 I530 V597 Y600 W601	Y356 A463 I466 Q467 F515 L516 I518 H526 I529 V596 Y599 W600
BS43	CLA	b	F432 P461 V462 F463 A464 F524 H527 H528	F431 P460 V461 F462 A463 F523 H526 H527
BS44	CLA	b	L426 V429 A531 H535	L425 V428 A530 H534
BS45	F6C	b	L685 H689 S695 G697	L684 H688 S694 G696
BS46	F6C	b	F22 L685 A686 H689 G697 W699 R700 P703	F21 L684 A685 H688 G696 W698 R699 P702
BS47	CLA	b	F659 L662 F670 V714 T717 H718 V721	F658 L661 F669 V713 T716 H717 V720
BS48	PQN	b	M669 F670 T673 W674 R675 W678 A705 L706 A711	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:7lx0, PDBe:7lx0, PDBj:7lx0
• PDBsum: 7lx0
• UniProt: G6FMF0