Structure of PDB 7s3d Chain b

Receptor sequence

>7s3db (length=742) Species: 91464 (Synechococcus sp. PCC 7335)

ATKFPKFSQELQQDPTTRRIFYSLATAHDFESHDGMTEESLYQRIFASHF
GHLAIIFLWTSGILFHVAWQGNFEAWIKDPLNISPIAHAIWDPQFGPAAM
DAFTPAGAGNPVNFCYSGVYHWWYTIGLRTNGDLFAGAMFLLLLAAVMLY
AGWLHLQPRYRPSLAWFKNAESRLNHHLAGLFGVSSLAWTGHLVHVAIPE
SRGQHVGWDNFLSMPPHPEGLKPFFTGNWGAYALNPDTSEHLFNTSQGAG
TAILTFLGGFHPQTESLWLTDMAHHHLAIAVIFIIAGHMYRTNFGIGHSI
KEMTESLQGPGWTGFFIAPNTGRGHKGIYDAYNNSLHFQLGWHLACLGVV
TSLVAQHMYAMPPYAFIARDYTTTAALYTHHQYIAGFLMLGAFAHGGIFL
IRDYDPVANENNVLARVLDHKEAIISHLSWVSLFLGFHTLALYVHNDCEV
AFGSPDKQILVEPVFAQWIQAVHGKALYGISSLLSNPDSIASTAWPNHAN
VWLPGWLEAINNGTNSLFLAIGPGDFLVHHAIALGLHVTTLILVKGALDA
RGSKLMPDKKDFGYAFPCDGPGRGGTCDISAWDSVYLATFWMLNTLGWVT
FYWHWKHLAIWSGNVAQFNEGSTYLMGWFRDYLWLNSAQLINGYNPYGTN
NLAIWAWIFLFGHLVWAISFMFLITWRGYWQELIETLMWAHENTPLSFGY
PKDKPVALSIVQARLVGLVHFTVGYIATYGAFLIASTGSRFP

3D structure

• PDB: 7s3d Structure of a photosystem I-ferredoxin complex from a marine cyanobacterium provides insights into far-red light photoacclimation.
• Chain: b
• Resolution: 2.91 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	CL0	b	F630 W635	F629 W634
BS02	CLA	b	W658 L661 H664 L665 W667 A668	W657 L660 H663 L664 W666 A667
BS03	CLA	b	S433 L434 G437 F438 V539 L542 I543 L588 F591 W592	S432 L433 G436 F437 V538 L541 I542 L587 F590 W591
BS04	CLA	b	N694 T695 P696	N693 T694 P695
BS05	CLA	b	S427 S430 W431 L434	S426 S429 W430 L433
BS06	SF4	b	C569 G571 C578 W677	C568 G570 C577 W676
BS07	CLA	b	Y444 A532 W599 F602 W629 L634 S638 I642 F660 H664 W667 Y726 T729 Y730 F733	Y443 A531 W598 F601 W628 L633 S637 I641 F659 H663 W666 Y725 T728 Y729 F732
BS08	CLA	b	D448 W592 N595 W599 L626 F630 W667	D447 W591 N594 W598 L625 F629 W666
BS09	CLA	b	A668 I669 M672 Y680 W681	A667 I668 M671 Y679 W680
BS10	CLA	b	F8 A28 H29 F31 R45 I56	F7 A27 H28 F30 R44 I55
BS11	CLA	b	H29 F31 E32 I46 S49 H50 H53 L54 R174 L337 Q340 L341 H344 L345	H28 F30 E31 I45 S48 H49 H52 L53 R173 L336 Q339 L340 H343 L344
BS12	CLA	b	H29 H53 W60 L348 L389	H28 H52 W59 L347 L388
BS13	CLA	b	L59 W60 F66 H67 W70 Q71 H89	L58 W59 F65 H66 W69 Q70 H88
BS14	CLA	b	A88 H89 N114 Y117 S118 I655 W656	A87 H88 N113 Y116 S117 I654 W655
BS15	CLA	b	I91 W92 D93 Q95 F96 N114 I655 W658	I90 W91 D92 Q94 F95 N113 I654 W657
BS16	F6C	b	P94 Q95	P93 Q94
BS17	CLA	b	F47 F51 A152 L155 H156 Y161 W167	F46 F50 A151 L154 H155 Y160 W166
BS18	CLA	b	W167 S173 H177 T293	W166 S172 H176 T292
BS19	CLA	b	F47 H50 F51 L54 W123 W167 N170 S173 R174 H177 H178 G181 L182 F183	F46 H49 F50 L53 W122 W166 N169 S172 R173 H176 H177 G180 L181 F182
BS20	CLA	b	G128 L129 F141 A189 W190 H193 V197 G208 W209 F212	G127 L128 F140 A188 W189 H192 V196 G207 W208 F211
BS21	CLA	b	A189 T191 H196 L213 P216 P217 G221 L222 L255	A188 T190 H195 L212 P215 P216 G220 L221 L254
BS22	CLA	b	W230 G231 L255 F257 H275 L278 A279 V282	W229 G230 L254 F256 H274 L277 A278 V281
BS23	CLA	b	F257 L268 D272 H275 H276 H358 M362 W507	F256 L267 D271 H274 H275 H357 M361 W506
BS24	CLA	b	W123 F183 S186 W190 H276 H277 V351 V355 M359 P364 Y365	W122 F182 S185 W189 H275 H276 V350 V354 M358 P363 Y364
BS25	CLA	b	L179 F183 I283 F284 A287 M290 Y291 M304	L178 F182 I282 F283 A286 M289 Y290 M303
BS26	CLA	b	N176 H177 A180 H289 F295	N175 H176 A179 H288 F294
BS27	CLA	b	I286 H289 I297 G298 H299	I285 H288 I296 G297 H298
BS28	F6C	b	H299 S307 L308 W313 T314 G315 F316 F317 I318	H298 S306 L307 W312 T313 G314 F315 F316 I317
BS29	CLA	b	M304 F316 H326 V414	M303 F315 H325 V413
BS30	CLA	b	A171 R174 L175 H178 F183 I301 Y330 Y333 W343 H344 C347	A170 R173 L174 H177 F182 I300 Y329 Y332 W342 H343 C346
BS31	CLA	b	V350 S353 Q357 Q383 M390 F394 L537 T541 M593 L597	V349 S352 Q356 Q382 M389 F393 L536 T540 M592 L596
BS32	CLA	b	W343 C347 V350 L354 Q357 H358 A361 M362 F519	W342 C346 V349 L353 Q356 H357 A360 M361 F518
BS33	CLA	b	W60 Y117 S118 A377 T380 H381 Y384 I385 F388 W656 I727 A728 G731	W59 Y116 S117 A376 T379 H380 Y383 I384 F387 W655 I726 A727 G730
BS34	CLA	b	W60 T61 G119 W123 L348 T352 V355 M359 Y365 H381 H382	W59 T60 G118 W122 L347 T351 V354 M358 Y364 H380 H381
BS35	CLA	b	L25 A26 H29 D30 L341 F388 G392 H396 I399 R403 Y565 W583	L24 A25 H28 D29 L340 F387 G391 H395 I398 R402 Y564 W582
BS36	CLA	b	T322 V414 R417 V418 H421 H428	T321 V413 R416 V417 H420 H427
BS37	CLA	b	H428 W431	H427 W430
BS38	CLA	b	W431 F435 H439	W430 F434 H438
BS39	F6C	b	A442 V445 H446 E450	A441 V444 H445 E449
BS40	CLA	b	W469 I470 V473 H474 L485 W503 W507	W468 I469 V472 H473 L484 W502 W506
BS41	CLA	b	I491 A495 A500 N501 W503	I490 A494 A499 N500 W502
BS42	CLA	b	W496 P497	W495 P496
BS43	CLA	b	Y360 F466 A467 I470 Q471 L520 H530 V600 Y603 W604	Y359 F465 A466 I469 Q470 L519 H529 V599 Y602 W603
BS44	CLA	b	F435 L436 P464 V465 F466 A467 F527 H530 H531	F434 L435 P463 V464 F465 A466 F526 H529 H530
BS45	CLA	b	L429 V432 H538	L428 V431 H537
BS46	F6C	b	L688 H692 T695 S698 G700	L687 H691 T694 S697 G699
BS47	F6C	b	F22 L688 M689 H692 Y701 P702 K703 P706	F21 L687 M688 H691 Y700 P701 K702 P705
BS48	CLA	b	F662 I669 L709 V720 H721	F661 I668 L708 V719 H720
BS49	CLA	b	I318 A319 P320 N321	I317 A318 P319 N320
BS50	PQN	b	M672 F673 T676 W677 R678 W681 A708 L709 A714	M671 F672 T675 W676 R677 W680 A707 L708 A713
BS51	CLA	b	Y151 W154	Y150 W153

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:7s3d, PDBe:7s3d, PDBj:7s3d
• PDBsum: 7s3d
• PubMed: 34793839
• UniProt: B4WP21