Structure of PDB 7y5e Chain B2

Receptor sequence

>7y5eB2 (length=732) Species: 35688 (Porphyridium purpureum)

TKFPKFSQALAQDPSTRRIWFGIATSHDFESHDGMTEENLYQKIFASHFG
HLAIIFLWTSGNLFHVAWQGNFEQWVLNPLKTKPIAHAIWDPHFGQPAIK
AFTKGGVTYPVDIAYSGVYHWWYTIGMRTNNDLYSGALFLLVLSAVFLFA
GWLHLQPRFKPSLSWFKNNESRLNHHLSGLFGVSSLAWTGHMIHVAIPES
RGQHIGWDNFTTVRPHPAGLEPFFSGNWSVYAQNPDTPNHIFGTSEGAGT
AILTFLGGFHPQTQSLWLTDMAHHHLAIAVVFIVAGHMYRTNWGIGHSLK
EILEAHEPPSGRLGKGHKGLFETITNSLHMQLGLALASLGVITSLVAQHM
YALPPYAFMAKDFTTQAALYTHHQYIAGFLMVGAFAHGAIFFVRDYDAEQ
NEGNVLARMLEHKEAIISHLSWVSLFLGFHTLGLYIHNDVVVAFGTPEKQ
ILVEPVFAQWIQAASGKALYGFDVLLSSSNSVATQAGGNIWLPGWLEAIN
SGKNSLFLTIGPGDFLVHHAIALGLHTTALILIKGALDARGSKLMPDKKD
FGYSFPCDGPGRGGTCDISAWDAFYLSVFWMLNTIGWVTFYWHWKHVTIW
QGNVAQFNESSTYLMGWLRDYLWLNSSPLINGYNPYGMNSLSVWAWMFLF
GHLIWATGFMFLISWRGYWQELIETLAWAHERTPLANLVRWKDKPVALSI
VQARLVGLAHFSVGYILTYAAFVIASTTGKFG

3D structure

• PDB: 7y5e In situ structure of the red algal phycobilisome-PSII-PSI-LHC megacomplex.
• Chain: B2
• Resolution: 3.3 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	CLA	B2	F51 V148 A152 L155 H156 W167	F49 V146 A150 L153 H154 W165
BS02	CLA	B2	L624 W625	L622 W623
BS03	CLA	B2	L678 H682	L676 H680
BS04	CLA	B2	S426 L427 G430 F431 L434 I533 L578 F581 W582	S424 L425 G428 F429 L432 I531 L576 F579 W580
BS05	CLA	B2	W648 L651 F652 L655 A658	W646 L649 F650 L653 A656
BS06	CLA	B2	S423 W424 L427	S421 W422 L425
BS07	CLA	B2	G435 I438 H439 I453	G433 I436 H437 I451
BS08	SF4	B2	C559 G561 C568	C557 G559 C566
BS09	CLA	B2	A658 F661 M662 I665 Y670 W671	A656 F659 M660 I663 Y668 W669
BS10	CLA	B2	I438 D441 W582 N585 W589 L616	I436 D439 W580 N583 W587 L614
BS11	CLA	B2	Y437 A522 W589 F592 W619 L624 F650 H654 W657 Y717 T720 Y721 F724	Y435 A520 W587 F590 W617 L622 F648 H652 W655 Y715 T718 Y719 F722
BS12	CLA	B2	H29 F31 Y43 I46 S49 H50 H53 L54 R174 L330 Q333 L334 L341	H27 F29 Y41 I44 S47 H48 H51 L52 R172 L328 Q331 L332 L339
BS13	CLA	B2	H53 I57 W60 F381 L382	H51 I55 W58 F379 L380
BS14	CLA	B2	N64 A88 H89 D114 Y117 S118 V645 W646	N62 A86 H87 D112 Y115 S116 V643 W644
BS15	CLA	B2	I91 W92 D93 H95 F96 V645 W648	I89 W90 D91 H93 F94 V643 W646
BS16	CLA	B2	W167 H177 W295	W165 H175 W293
BS17	CLA	B2	F47 H50 F51 L54 W123 W167 R174 H177 H178 L182 F183	F45 H48 F49 L52 W121 W165 R172 H175 H176 L180 F181
BS18	CLA	B2	D134 A189 W190 G192 H193 V197 G208 W209 F212	D132 A187 W188 G190 H191 V195 G206 W207 F210
BS19	CLA	B2	T191 H196 R216 G221 L222 L255	T189 H194 R214 G219 L220 L253
BS20	CLA	B2	W230 L255 F257 H275 L278 A279 V282 I492	W228 L253 F255 H273 L276 A277 V280 I490
BS21	CLA	B2	F257 H275 H276 A279 H351 L355 W493 W497	F255 H273 H274 A277 H349 L353 W491 W495
BS22	CLA	B2	S186 S187 W190 H276 H277 I280 I344 L347 M352 P357	S184 S185 W188 H274 H275 I278 I342 L345 M350 P355
BS23	CLA	B2	L179 F183 F284 A287 Y291	L177 F181 F282 A285 Y289
BS24	CLA	B2	H177 S180 V185 H289 T293 W295 I297	H175 S178 V183 H287 T291 W293 I295
BS25	CLA	B2	H299 I304 H308	H297 I302 H306
BS26	CLA	B2	H319 V407	H317 V405
BS27	CLA	B2	N171 R174 L175 H178 F183 F323 I326 L336 A337 S340 L341	N169 R172 L173 H176 F181 F321 I324 L334 A335 S338 L339
BS28	CLA	B2	V343 S346 L347 Q350 Q376 M383 F387 A531 I587	V341 S344 L345 Q348 Q374 M381 F385 A529 I585
BS29	CLA	B2	V343 L347 Q350 H351 F509	V341 L345 Q348 H349 F507
BS30	CLA	B2	W60 S118 T373 H374 Y377 I378 I718 A722	W58 S116 T371 H372 Y375 I376 I716 A720
BS31	CLA	B2	T61 G119 W123 S186 T345 V348 M352 Y358 L371 H374 H375 I378	T59 G117 W121 S184 T343 V346 M350 Y356 L369 H372 H373 I376
BS32	CLA	B2	D30 L334 L338 F381 G385 H389 R396 Y555 W573 F576	D28 L332 L336 F379 G383 H387 R394 Y553 W571 F574
BS33	CLA	B2	R314 L315 R410 H414 H421	R312 L313 R408 H412 H419
BS34	CLA	B2	H421 W424	H419 W422
BS35	CLA	B2	I463 A466 W493 F509	I461 A464 W491 F507
BS36	CLA	B2	Y353 I463 Q464 F509 L510 H520 V590 Y593	Y351 I461 Q462 F507 L508 H518 V588 Y591
BS37	CLA	B2	F428 L429 P457 F459 A460 F517 H520 H521	F426 L427 P455 F457 A458 F515 H518 H519
BS38	CLA	B2	L422 V425 L527 H528	L420 V423 L525 H526
BS39	CLA	B2	T18 W22 I675 H682 P697	T16 W20 I673 H680 P695
BS40	CLA	B2	F652 L655 I656 T659 F663 V708 H712	F650 L653 I654 T657 F661 V706 H710
BS41	CLA	B2	H308 E309 P310 P311	H306 E307 P308 P309
BS42	PQN	B2	W22 F663 S666 W667 R668 W671 A699 L700 A705	W20 F661 S664 W665 R666 W669 A697 L698 A703
BS43	CLA	B2	W424 L427 F428 F431 H432	W422 L425 F426 F429 H430
BS44	CLA	B2	L59 W60 F66 H67 W70	L57 W58 F64 H65 W68
BS45	CLA	B2	P94 H95	P92 H93
BS46	3XQ	B2	L436 I453	L434 I451
BS47	CLA	B2	W680 P686	W678 P684
BS48	CLA	B2	F8 I25 S28 H29	F6 I23 S26 H27
BS49	CLA	B2	V286 M290 I297 G298 H299	V284 M288 I295 G296 H297
BS50	CLA	B2	V484 A488 W493	V482 A486 W491

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:0009507 chloroplast
• GO:0009522 photosystem I
• GO:0009579 thylakoid
• GO:0016020 membrane
• GO:0042651 thylakoid membrane

External links

• PDB: RCSB:7y5e, PDBe:7y5e, PDBj:7y5e
• PDBsum: 7y5e
• PubMed: 36922595
• UniProt: W0RYU6