Structure of PDB 7y3f Chain A

Receptor sequence

>7y3fA (length=742) Species: 1180 (Nostoc sp.)

KKARVIVDKDPVPTSFEKWAQPGHFDRTLARGPKTTTWIWNLHALAHDFD
THTSDLEDISRKIFAAHFGHLAVVTIWLSGMIFHGAKFSNYEAWLSDPLN
VRPSAQVVWPIVGQDILNGDVGGGFHGIQITSGLFQVWRGWGITNSFQLY
CTAIGGLVLAGLFLFAGWFHYHKRAPKLEWFQNVESMLNHHLQVLLGCGS
LGWAGHLIHVSAPINKLMDAGVAVKDIPLPHEFILNKSLLIDLFPGFAAG
LTPFFTLNWGQYADFLTFKGGLNPVTGGLWMTDIAHHHLAIAVVFIIAGH
QYRTNWGIGHSIKEILENHKGPFTGEGHKGLYENLTTSWHAQLATNLAFL
GSLTIIIAHHMYAMPPYPYLATDYATQLCIFTHHIWIGGFLIVGGAAHAA
IFMVRDYDPVVNQNNVLDRVIRHRDAIISHLNWVCIFLGFHSFGLYIHND
TMRALGRPQDMFSDTAIQLQPVFAQWVQNLHTLAPGGTAPNALEPVSYAF
GGGVLAVGGKVAMMPIALGTADFLIHHIHAFTIHVTVLILLKGVLFARSS
RLIPDKANLGFRFPCDGPGRGGTCQVSGWDHVFLGLFWMYNSLSIVIFHF
SWKMQSDVWGTVDAAGNVSHITGGNFAQSAITINGWLRDFLWAQASQVIN
SYGSALSAYGLMFLGAHFVWAFSLMFLFSGRGYWQELIESIVWAHNKLKV
APAIQPRALSITQGRAVGVAHYLLGGIATTWAFFHAHILSVG

3D structure

• PDB: 7y3f Structure of a monomeric photosystem I core associated with iron-stress-induced-A proteins from Anabaena sp. PCC 7120
• Chain: A
• Resolution: 2.62 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	A	Y456 Y600 N601 S604 I605 F608 I643 W646 L651 A655 F673 H677 W680 Y732 T739 T740 F743	Y446 Y590 N591 S594 I595 F598 I633 W636 L641 A645 F663 H667 W670 Y722 T729 T730 F733
BS02	CLA	A	F453 I457 F541 W598 N601 I643 W680 Y732	F443 I447 F531 W588 N591 I633 W670 Y722
BS03	CLA	A	F678 A681 F682 L684 M685 Y693 W694	F668 A671 F672 L674 M675 Y683 W684
BS04	CLA	A	I49 L52 H53	I39 L42 H43
BS05	CLA	A	W29 H34 F35 H53 A56 H57 H62 A76 G79 H80	W19 H24 F25 H43 A46 H47 H52 A66 G69 H70
BS06	CLA	A	H57 F59 I73 A76 H77 H80 L81 W349 H350 Q352 L353 N356	H47 F49 I63 A66 H67 H70 L71 W339 H340 Q342 L343 N346
BS07	CLA	A	H80 V84 W87 F400 L401	H70 V74 W77 F390 L391
BS08	CLA	A	G90 F93 H94 F98 W119	G80 F83 H84 F88 W109
BS09	CLA	A	M91 Q116 I140 T141 S142 A668 Y669 H745	M81 Q106 I130 T131 S132 A658 Y659 H735
BS10	CLA	A	Q116 W119 Q124 L174	Q106 W109 Q114 L164
BS11	CLA	A	V15 F74 F78 L172 A176 F179 H180 R184 W190	V5 F64 F68 L162 A166 F169 H170 R174 W180
BS12	CLA	A	T24 S25 F26 K28 W29 H34 K72 A75 G177 W178 Y181 H182	T14 S15 F16 K18 W19 H24 K62 A65 G167 W168 Y171 H172
BS13	CLA	A	A13 R14 V15 W190 N193 S196 H200 T314	A3 R4 V5 W180 N183 S186 H190 T304
BS14	CLA	A	F74 H77 F78 L81 F173 W190 F191 M197 H200 H201 V204 L205	F64 H67 F68 L71 F163 W180 F181 M187 H190 H191 V194 L195
BS15	CLA	A	W151 G152 Q158 T162 G212 W213 H216 V220 P240	W141 G142 Q148 T152 G202 W203 H206 V210 P230
BS16	CLA	A	L211 G212 G215 I218 H219 K247 F257 G260 L261	L201 G202 G205 I208 H209 K237 F247 G250 L251
BS17	CLA	A	F157 H241 I244 L245	F147 H231 I234 L235
BS18	CLA	A	W269 Y272 A273 L276 H296 L299 V303 N501	W259 Y262 A263 L266 H286 L289 V293 N491
BS19	CLA	A	F278 L289 D293 H296 H297 I301 H370 M374 V506	F268 L279 D283 H286 H287 I291 H360 M364 V496
BS20	CLA	A	W151 L206 G209 W213 H297 H298 I301 L363 I367 M371 P376 Y377	W141 L196 G199 W203 H287 H288 I291 L353 I357 M361 P366 Y367
BS21	CLA	A	N199 H200 Q203 C208 H310 T314 W316	N189 H190 Q193 C198 H300 T304 W306
BS22	CLA	A	L202 L206 F305 A308 Q311 Y312 I325 F359	L192 L196 F295 A298 Q301 Y302 I315 F349
BS23	CLA	A	I307 Q311 G319 H320	I297 Q301 G309 H310
BS24	CLA	A	H320 I325 N328 H329	H310 I315 N318 H319
BS25	CLA	A	L326 H329 H338 V426 L427	L316 H319 H328 V416 L417
BS26	CLA	A	M197 L198 H201 I322 L345 T346 W349 Q352 T355 N356 F359	M187 L188 H191 I312 L335 T336 W339 Q342 T345 N346 F349
BS27	CLA	A	I365 I366 H369 G399 I402 I543 V547	I355 I356 H359 G389 I392 I533 V537
BS28	CLA	A	I366 H369 H370 A373 M374 V506 F510	I356 H359 H360 A363 M364 V496 F500
BS29	CLA	A	W87 M91 S142 C389 T392 H393 W396 I397 M672 I737 W741	W77 M81 S132 C379 T382 H383 W386 I387 M662 I727 W731
BS30	CLA	A	W87 S142 V147 L360 T364 I367 M371 Y377 H393 H394 I397	W77 S132 V137 L350 T354 I357 M361 Y367 H383 H384 I387
BS31	CLA	A	A54 D58 H350 L353 L357 F400 G404 H408 I411 R415 R572 W589	A44 D48 H340 L343 L347 F390 G394 H398 I401 R405 R562 W579
BS32	CLA	A	F333 T334 V426 R429 V430 H433 I437 H440	F323 T324 V416 R419 V420 H423 I427 H430
BS33	CLA	A	H440 W443	H430 W433
BS34	CLA	A	W443 I446 F447 F450 H451	W433 I436 F437 F440 H441
BS35	CLA	A	F450 G454 L455 I457 H458 T461 M462 R467 D470 F472	F440 G444 L445 I447 H448 T451 M452 R457 D460 F462
BS36	CLA	A	W486 L490 H491 A494 T498 V506	W476 L480 H481 A484 T488 V496
BS37	CLA	A	F278 T498 A499 P500 N501	F268 T488 A489 P490 N491
BS38	CLA	A	H369 Y372 V487 Q488 F510 I526 H536 H539 V606 H609	H359 Y362 V477 Q478 F500 I516 H526 H529 V596 H599
BS39	CLA	A	W443 V444 F447 L448 P481 V482 F483 A484 F533 H536 H537 A540	W433 V434 F437 L438 P471 V472 F473 A474 F523 H526 H527 A530
BS40	CLA	A	L441 I543 H544	L431 I533 H534
BS41	CLA	A	I701 A704 H705	I691 A694 H695
BS42	CLA	A	W50 F682 L719 A726 V727 H731 L734	W40 F672 L709 A716 V717 H721 L724
BS43	CLA	A	W443 I446	W433 I436
BS44	PQN	A	M685 F686 S689 R691 W694 A718 L719 G724	M675 F676 S679 R681 W684 A708 L709 G714
BS45	SF4	A	C575 G577 P578 C584 I721	C565 G567 P568 C574 I711
BS46	CLA	A	L647 L651 W652	L637 L641 W642
BS47	CLA	A	L671 L674 F678 A681	L661 L664 F668 A671
BS48	CLA	A	N442 I446 F450 F541 L548 I549 F597 W598	N432 I436 F440 F531 L538 I539 F587 W588
BS49	CLA	A	A464 L465	A454 L455
BS50	CLA	A	T46 I49 H705 P712 P716	T36 I39 H695 P702 P706
BS51	CLA	A	F265 L267	F255 L257
BS52	CLA	A	K330 P332 F333	K320 P322 F323

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:7y3f, PDBe:7y3f, PDBj:7y3f
• PDBsum: 7y3f
• PubMed: 36805598
• UniProt: P58576|PSAA_NOSS1 Photosystem I P700 chlorophyll a apoprotein A1 (Gene Name=psaA)