Structure of PDB 7y7b Chain B

Receptor sequence

>7y7bB (length=731) Species: 173977 (Chroomonas placoidea)

TKFPKFSQALAQDPATRRIWYGLATAHDFESHDGMTEENLYQKIFASHFG
HLAIIFLWTSGNLFHVAWQGNFEQWVLNPLKVKPVAHAIWDPHFGQPAVK
AFTKGGVFYPVNIATSGVYHWWYTIGMRTNNDLYAGSLFLLFLSGVFLFA
GWLHLQPKFRPGLSWFKNNESRLNHHLSGLFGFSSLAWAGHLIHIAIPEA
RGQHVGWDNFTKTLPHPAGLTPFFTGNWSLYADNPDTANHIFGTSEGSGS
AILTFLGGFHPQTQALWLTDIAHHHLAIGVVFIFAGHMYRTNWGIGHSLK
EILDAHRPPGGRLGAGHKGLFETITNSLHFQLGLALASIGVITSLVAQHM
YALPAYAFIAKDYTTQAALYTHHQYIAGFLMVGAFAHGAIFFVRDYDPEQ
NKNNVLARMLEHKEAIISHLSWVSLFLGFHTLGLYIHNDVVVAFGTPEKQ
ILVEPVFAQWIQASSGKALYGFDVLLSSSNSVATNASNNIWLPGWLDAIN
SGKNSLFLPIGPGDFLVHHAIALGLHTTALILVKGALDARGSKLMPDKKD
FGYSFPCDGPGRGGTCDISAWDAFYLSMFWMLNTIGWVTFYWHWKHVTIW
QGNAGQFNESSTYIMGWLRDYLWLNSSPLINGYNPFGMNSLAVWAWMFLF
GHLIWATGFMFLISWRGYWQELIETLAWAHERTPLANLVRWKDKPVALSI
VQARLVGLIHFTVGYVFTYAAFVIASTTGKF

3D structure

• PDB: 7y7b Structural basis and evolution of the photosystem I-light-harvesting supercomplex of cryptophyte algae.
• Chain: B
• Resolution: 2.66 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	B	F225 F226 W230	F223 F224 W228
BS02	CLA	B	L620 W625	L618 W623
BS03	CLA	B	T685 P686	T683 P684
BS04	CLA	B	L678 A681 H682 V691	L676 A679 H680 V689
BS05	CLA	B	I438 D441 W582 N585 W589 I616 W657	I436 D439 W580 N583 W587 I614 W655
BS06	CLA	B	S426 L427 G430 F431 L434 T529 I533 W582	S424 L425 G428 F429 L432 T527 I531 W580
BS07	CLA	B	W648 L651 F652 H654 L655 W657 A658	W646 L649 F650 H652 L653 W655 A656
BS08	SF4	B	C559 C568 W667	C557 C566 W665
BS09	CLA	B	W589 W619 F650 H654 W657 Y717 T720 Y721 F724	W587 W617 F648 H652 W655 Y715 T718 Y719 F722
BS10	CLA	B	A658 T659 F661 M662 Y670 W671	A656 T657 F659 M660 Y668 W669
BS11	CLA	B	A28 H29 F31 S49 I56	A26 H27 F29 S47 I54
BS12	CLA	B	H29 I46 S49 H50 H53 L54 R174 L330 L334 A337 I341	H27 I44 S47 H48 H51 L52 R172 L328 L332 A335 I339
BS13	CLA	B	H29 H53 I57 W60	H27 H51 I55 W58
BS14	CLA	B	L59 W60 G63 F66 H67 W70 Q71	L57 W58 G61 F64 H65 W68 Q69
BS15	CLA	B	N64 A88 H89 N114 I115 A116 S118 V645 W646	N62 A86 H87 N112 I113 A114 S116 V643 W644
BS16	CLA	B	I91 W92 D93 H95 F96 V645	I89 W90 D91 H93 F94 V643
BS17	CLA	B	F47 F51 A152 H156 F161 W167	F45 F49 A150 H154 F159 W165
BS18	CLA	B	W167 S173 H177 N294	W165 S171 H175 N292
BS19	CLA	B	F47 H50 F51 L54 W123 W167 R174 H177 H178 L182 F183	F45 H48 F49 L52 W121 W165 R172 H175 H176 L180 F181
BS20	CLA	B	G128 M129 F141 A189 W190 H193 H196 I197 G208 W209 F212	G126 M127 F139 A187 W188 H191 H194 I195 G206 W207 F210
BS21	CLA	B	I195 H196 F212 L216 P217 G221 L222	I193 H194 F210 L214 P215 G219 L220
BS22	CLA	B	W230 L255 H275 L278 A279 F286 I492	W228 L253 H273 L276 A277 F284 I490
BS23	CLA	B	F257 D272 H275 H276 I280 H351 W497	F255 D270 H273 H274 I278 H349 W495
BS24	CLA	B	I127 S186 S187 W190 H276 H277 I280 V348 M352 Y358	I125 S184 S185 W188 H274 H275 I278 V346 M350 Y356
BS25	CLA	B	L175 L179 F183 F284 A287 M290 Y291 L301 I304	L173 L177 F181 F282 A285 M288 Y289 L299 I302
BS26	CLA	B	H177 S180 F185 H289 T293 W295 I297	H175 S178 F183 H287 T291 W293 I295
BS27	CLA	B	F286 M290 G298 H299	F284 M288 G296 H297
BS28	CLA	B	H299 E303 A307 H308	H297 E301 A305 H306
BS29	CLA	B	L305 H308 H319 V407 M411	L303 H306 H317 V405 M409
BS30	CLA	B	N171 R174 L175 H178 S340 I341 I344	N169 R172 L173 H176 S338 I339 I342
BS31	CLA	B	V343 S346 Q350 Q376 M383 F387 L527 M583	V341 S344 Q348 Q374 M381 F385 L525 M581
BS32	CLA	B	V343 L347 H351 A354 F509	V341 L345 H349 A352 F507
BS33	CLA	B	W60 T117 A370 T373 H374 I378 V718 A722 I726	W58 T115 A368 T371 H372 I376 V716 A720 I724
BS34	CLA	B	W60 G119 W123 S186 I344 T345 V348 M352 Y358 L371 H374 H375	W58 G117 W121 S184 I342 T343 V346 M350 Y356 L369 H372 H373
BS35	CLA	B	A26 H29 D30 L334 F381 G385 H389 I392 R396 Y555 F576	A24 H27 D28 L332 F379 G383 H387 I390 R394 Y553 F574
BS36	CLA	B	R314 L315 R410 M411 H414 H421	R312 L313 R408 M409 H412 H419
BS37	CLA	B	H421 W424	H419 W422
BS38	CLA	B	G435 L436 I438 H439 K451 I453	G433 L434 I436 H437 K449 I451
BS39	CLA	B	W462 I463 S466 S467 L477 L478 W493 W497 F509	W460 I461 S464 S465 L475 L476 W491 W495 F507
BS40	CLA	B	L477 A488 S489 W493	L475 A486 S487 W491
BS41	CLA	B	A460 I463 Q464 F509 L510 H520 I523 V590 Y593 W594	A458 I461 Q462 F507 L508 H518 I521 V588 Y591 W592
BS42	CLA	B	L429 P457 F459 A460 F517 H520 H521	L427 P455 F457 A458 F515 H518 H519
BS43	CLA	B	L422 H528	L420 H526
BS44	CLA	B	T18 W22 H682 R692 W693 P697	T16 W20 H680 R690 W691 P695
BS45	CLA	B	W22 F652 L655 I656 T659 F663 H712	W20 F650 L653 I654 T657 F661 H710
BS46	CLA	B	R309 P310 P311 R314 L315	R307 P308 P309 R312 L313
BS47	CLA	B	W424 L427 F428 F431 H432	W422 L425 F426 F429 H430
BS48	CLA	B	W209 D210	W207 D208
BS49	PQN	B	M662 F663 S666 W667 R668 W671 A699 L700 A705	M660 F661 S664 W665 R666 W669 A697 L698 A703
BS50	II0	B	L188 F225 V282 I285 F286 H289	L186 F223 V280 I283 F284 H287
BS51	8CT	B	M129 F141 L142	M127 F139 L140
BS52	8CT	B	F387 G390 F394	F385 G388 F392
BS53	8CT	B	W648 F652 I675	W646 F650 I673
BS54	8CT	B	F428 H432 L436 H521	F426 H430 L434 H519
BS55	CLA	B	F459 W462	F457 W460
BS56	CLA	B	P94 H95	P92 H93
BS57	CLA	B	P686 L687	P684 L685
BS58	8CT	B	I56 L59	I54 L57

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:0009536 plastid
• GO:0009579 thylakoid
• GO:0016020 membrane
• GO:0042651 thylakoid membrane

External links

• PDB: RCSB:7y7b, PDBe:7y7b, PDBj:7y7b
• PDBsum: 7y7b
• PubMed: 36943796
• UniProt: A0A222AI95