Structure of PDB 7y8a Chain A

Receptor sequence

>7y8aA (length=741) Species: 173977 (Chroomonas placoidea)

KVSITVDKDPVATSFEKWAQPGHFSRTLAKGPKTTTWIWNLHADAHDFDS
HTSSLEDISRKIFSAHFGQLSIIFLWLSGMYFHGARFSNYSAWLSNPTAV
KPSAQVVWPIVGQEVLNGDVGGGFQGVQITSGFFQIWRASGITSEVELYW
CALAGLLMSGLMIFAGWFHYHKAAPKLEWFQNAESMLNHHLSGLLGLGCL
SWAGHQIHVSLPINKLLDAGVAPQEIPLPHEFLVNRDLMAQLYPSFSKGL
VPFFTLNWSEYSDFLTFKGGLNPVTGGLWLSDTAHHHLALAVLFIVAGHM
YRTNWGIGHSMKEILEAHKGPFTGEGHKGLYEVLITSWHAQLSINLAMLG
SLSIIIAHHMYAMPPYPYIATDYPTQLSLFTHHMWIGGFCVCGAAAHAGI
FMVRDYNPAQNYNNLLDRVIRHRDAIISHLNWICIFLGFHSFGLYIHNDT
MRALGRTQDMFSDTAIQLKPVFAQWVQNIHTVAPGNTTPNALATASYAFG
GNVVSVGNKVAMMPISLGTADFMVHHIHAFTIHVTVLILLKGVLFSRNSR
LIPDKANLGFRFPCDGPGRGGTCQSSAWDSVFLGLFWMYNCISVVIFHFS
WKMQSDVWGTVQADNTVTHITGGNFAQSAITINGWLRDFLWAQASQVIQS
YGSSLSAYGLIFLGAHFIWAFSLMFLFSGRGYWQELIESVVWAHNKLNFA
PAIQPRALSITQGRAVGLAHYLLGGIGTTWAFFLARIISVG

3D structure

• PDB: 7y8a Structural basis and evolution of the photosystem I-light-harvesting supercomplex of cryptophyte algae.
• Chain: A
• Resolution: 2.71 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	A	Y456 I538 Y600 N601 S604 F608 W646 A655 F673 H677 W680 T739 T740 F743	Y445 I527 Y589 N590 S593 F597 W635 A644 F662 H666 W669 T728 T729 F732
BS02	CLA	A	W29 H34 F35 H53 A56 H57 F59 I83	W18 H23 F24 H42 A45 H46 F48 I72
BS03	CLA	A	H57 F59 I73 A76 H77 I84 F85 W349 H350 Q352 L353 N356 L357	H46 F48 I62 A65 H66 I73 F74 W338 H339 Q341 L342 N345 L346
BS04	CLA	A	Q80 I84 W87 L360 F400	Q69 I73 W76 L349 F389
BS05	CLA	A	G90 F93 H94 F98 W119	G79 F82 H83 F87 W108
BS06	CLA	A	W87 M91 Q116 I140 S142 Y669 I672 W741	W76 M80 Q105 I129 S131 Y658 I661 W730
BS07	CLA	A	Q116 V117 V118 W119 Q124 L127 A668	Q105 V106 V107 W108 Q113 L116 A657
BS08	CLA	A	I15 F74 F78 A176 F179 H180 W190	I4 F63 F67 A165 F168 H169 W179
BS09	CLA	A	V22 T24 S25 K28 W29 H34 K72 S75 I174 G177 W178 Y181 H182	V11 T13 S14 K17 W18 H23 K61 S64 I163 G166 W167 Y170 H171
BS10	CLA	A	V13 S14 I15 W190 H200	V2 S3 I4 W179 H189
BS11	CLA	A	F74 H77 F78 L81 M173 W190 M197 H200 H201 L205	F63 H66 F67 L70 M162 W179 M186 H189 H190 L194
BS12	CLA	A	S151 G152 E158 W161 C162 A165 M169 S212 W213 H216 V220 P240	S140 G141 E147 W150 C151 A154 M158 S201 W202 H205 V209 P229
BS13	CLA	A	G215 I218 H219 L244 F257 L261	G204 I207 H208 L233 F246 L250
BS14	CLA	A	W161 H241	W150 H230
BS15	CLA	A	W269 L276 F278 H296 L299 A300 V303 N501	W258 L265 F267 H285 L288 A289 V292 N490
BS16	CLA	A	F278 L289 D293 H296 H297 H370 M374	F267 L278 D282 H285 H286 H359 M363
BS17	CLA	A	W213 H297 H298 L301 L363 I367 P376 Y377	W202 H286 H287 L290 L352 I356 P365 Y366
BS18	CLA	A	N199 H200 S203 H310 T314 W316 I318	N188 H189 S192 H299 T303 W305 I307
BS19	CLA	A	L202 A308 M311 Y312	L191 A297 M300 Y301
BS20	CLA	A	V307 H310 M311 G319 H320	V296 H299 M300 G308 H309
BS21	CLA	A	H320 A328 H329	H309 A317 H318
BS22	CLA	A	L326 H329 H338 L341 L426	L315 H318 H327 L330 L415
BS23	CLA	A	L66 A194 M197 L198 H201 M322 L345 I346 W349 Q352 I355 N356 M359	L55 A183 M186 L187 H190 M311 L334 I335 W338 Q341 I344 N345 M348
BS24	CLA	A	I365 I366 H369 V402 I543 V547	I354 I355 H358 V391 I532 V536
BS25	CLA	A	I366 H370 A373 M374 S507 F510	I355 H359 A362 M363 S496 F499
BS26	CLA	A	W87 F144 T392 H393 W396 W741	W76 F133 T381 H382 W385 W730
BS27	CLA	A	F144 I147 I367 Y377 L390 H393 H394	F133 I136 I356 Y366 L379 H382 H383
BS28	CLA	A	H53 H57 L353 L357 F400 G404 A407 H408 I411 R572 W589	H42 H46 L342 L346 F389 G393 A396 H397 I400 R561 W578
BS29	CLA	A	F333 T334 R429 V430 H433 I437 H440	F322 T323 R418 V419 H422 I426 H429
BS30	CLA	A	H440 W443	H429 W432
BS31	CLA	A	I446 F447 F450 H451	I435 F436 F439 H440
BS32	CLA	A	F450 G454 L455 H458 M462 R467 D470 F472	F439 G443 L444 H447 M451 R456 D459 F461
BS33	CLA	A	I490 H491 A494 T498 T499	I479 H480 A483 T487 T488
BS34	CLA	A	F278 T498 T499 P500 N501	F267 T487 T488 P489 N490
BS35	CLA	A	H369 Y372 A484 V487 Q488 H536 H539 V606 H609 K613	H358 Y361 A473 V476 Q477 H525 H528 V595 H598 K602
BS36	CLA	A	L448 P481 F483 A484 F533 H536 H537 A540	L437 P470 F472 A473 F522 H525 H526 A529
BS37	CLA	A	L441 I444 I543 H544	L430 I433 I532 H533
BS38	CLA	A	I679 F682 L719 V727 H731	I668 F671 L708 V716 H720
BS39	CLA	A	W443 I446	W432 I435
BS40	CLA	A	L674 G675 H677 F678 A681	L663 G664 H666 F667 A670
BS41	CLA	A	F678 A681 F682 L684 M685 Y693 W694 L697	F667 A670 F671 L673 M674 Y682 W683 L686
BS42	CLA	A	I49 L52 H53	I38 L41 H42
BS43	CLA	A	V701 A704 H705 F710	V690 A693 H694 F699
BS44	CLA	A	F453 I457 F541 W598 N601 I643 Y732	F442 I446 F530 W587 N590 I632 Y721
BS45	8CT	A	A351 I355 A409 F412	A340 I344 A398 F401
BS46	8CT	A	C162 L208 S212	C151 L197 S201
BS47	8CT	A	L208 G209	L197 G198
BS48	8CT	A	M359 S362 L550 L551	M348 S351 L539 L540
BS49	SF4	A	C575 C584	C564 C573
BS50	PQN	A	M685 F686 W694 A718 L719	M674 F675 W683 A707 L708
BS51	IHT	A	F264 V303 I306 H310	F253 V292 I295 H299
BS52	CLA	A	L647 L651	L636 L640
BS53	CLA	A	N442 C445 I446 F541 L548 F597 W598	N431 C434 I435 F530 L537 F586 W587
BS54	CLA	A	T461 L465	T450 L454
BS55	CLA	A	T46 I49 H705 P712 P716	T35 I38 H694 P701 P705
BS56	II0	A	W119 I121	W108 I110
BS57	CLA	A	K330 P332 F333	K319 P321 F322

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:7y8a, PDBe:7y8a, PDBj:7y8a
• PDBsum: 7y8a
• PubMed: 36943796
• UniProt: A0A222AIB4