Structure of PDB 7dr1 Chain A

Receptor sequence

>7dr1A (length=739) Species: 2762 (Cyanophora paradoxa)

KIVIDKDPVSTSFDKWAVPGHFSRTLAKGPKTTTWIWNLHADVHDFDSYT
SDLEEVSRKIFSAHFGHLAVVFIWLSGAYFHGARFSNYEAWLSNPTTIKP
SAQVVWPIVGQEILNGDVGGGFQGIQITSGLFQMWRASGITTELQLYVTA
IGALVMAALMLFAGWFHYHKAAPKLEWFQNAESMMNHHLGGLFGLGSLSW
AGHQIHVSLPVNKLLDSGVSPQEIPLPHEFILNKDLIAQLYPSFGQGLTP
FFTLNWNEYSDFLTFKGGLNPVTGGLWLSDSAHHHLAIAVLFIVAGHMYR
TNWGIGHSMKEMYDSHKGPFTGEGHKGVYEIFTNSWHAQLSLNLALFGSL
SIIVAHHMYSMPPYPYLATDYATSLCLFTHHVWIGGFLIVGAGAHAAIFM
VRDYDPAQNYNNLVDRVLRHRDAIISHLNWVCIFLGFHSFGLYIHNDTMR
ALGRPQDMFSDAAIQLQPVFAQWVQGVNSAAAGNTAPNALANASYAFGGD
IVSVGGKVAMMPISLGTADFLVHHIHAFTIHVTVLILLKGVLFARNSRLI
PDKANLGFRFPCDGPGRGGTCQVSAWDHVFLGLFWMYNSLSVVLFHFSWK
MQSDVWGNVTADGAVSHITGNNFAQGAITINGWLRDFLWAQASQVIQSYG
SALSAYGLMFLGAHFIWAFSLMFLFSGRGYWQELIESIVWAHNKLKFAPS
IQPRALSITQGRAVGVAHYLLGGIATTWSFFHARIISVG

3D structure

• PDB: 7dr1 Structural insights into an evolutionary turning-point of photosystem I from prokaryotes to eukaryotes
• Chain: A
• Resolution: 3.2 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	I538 F541 T542 Y600 N601 S604 F608 I643 W646 L651 F673 H677 W680 T739 F743	I525 F528 T529 Y587 N588 S591 F595 I630 W633 L638 F660 H664 W667 T726 F730
BS02	CLA	A	F678 A681 F682 L684 M685 Y693 W694 L697	F665 A668 F669 L671 M672 Y680 W681 L684
BS03	CLA	A	I49 H53	I36 H40
BS04	CLA	A	H34 V56 H57 G79	H21 V43 H44 G66
BS05	CLA	A	H57 F59 I73 A76 H77 H80 L81 F85 W349 H350 Q352 L353 N356	H44 F46 I60 A63 H64 H67 L68 F72 W336 H337 Q339 L340 N343
BS06	CLA	A	H57 H80 V84 W87 F360 L401	H44 H67 V71 W74 F347 L388
BS07	CLA	A	G90 F93 H94 F98 W119	G77 F80 H81 F85 W106
BS08	CLA	A	Q116 I140 Y669	Q103 I127 Y656
BS09	CLA	A	Q116 W119 Q124 L127	Q103 W106 Q111 L114
BS10	CLA	A	I15 I17 F78 L172 A176 F179 H180 W190	I2 I4 F65 L159 A163 F166 H167 W177
BS11	CLA	A	T24 S25 F26 K28 W29 H34 K72 L174 G177 Y181 H182	T11 S12 F13 K15 W16 H21 K59 L161 G164 Y168 H169
BS12	CLA	A	K14 I15 W190 N193 H200 W316	K1 I2 W177 N180 H187 W303
BS13	CLA	A	F74 H77 F78 W190 M197 H200 H201	F61 H64 F65 W177 M184 H187 H188
BS14	CLA	A	G152 Q158 T162 S212 W213 H216 V220 P240	G139 Q145 T149 S199 W200 H203 V207 P227
BS15	CLA	A	L211 S212 G215 I218 H219 I244 K247 F257 G260 L261 L299	L198 S199 G202 I205 H206 I231 K234 F244 G247 L248 L286
BS16	CLA	A	L239 H241	L226 H228
BS17	CLA	A	W269 L276 F278 H296 L299 A300 V303 L304 N501	W256 L263 F265 H283 L286 A287 V290 L291 N488
BS18	CLA	A	F278 G280 L289 D293 H296 H297 I301 L304 H370 M374 A506	F265 G267 L276 D280 H283 H284 I288 L291 H357 M361 A493
BS19	CLA	A	F206 G209 W213 Q217 H297 H298 I301 F305 L363 V367 P376 Y377	F193 G196 W200 Q204 H284 H285 I288 F292 L350 V354 P363 Y364
BS20	CLA	A	N199 H200 G203 L208 I306 H310 T314 W316	N186 H187 G190 L195 I293 H297 T301 W303
BS21	CLA	A	M198 L202 F305 M311 Y312 M325 Y326 L359 V430	M185 L189 F292 M298 Y299 M312 Y313 L346 V417
BS22	CLA	A	V307 M311 G319 H320	V294 M298 G306 H307
BS23	CLA	A	H320 H329	H307 H316
BS24	CLA	A	Y326 H338 V341 L426	Y313 H325 V328 L413
BS25	CLA	A	A194 M197 M198 H201 F206 Y326 F345 T346 N347 W349 Q352 L355 N356 F360	A181 M184 M185 H188 F193 Y313 F332 T333 N334 W336 Q339 L342 N343 F347
BS26	CLA	A	I365 I366 H369 I402 I543 T546 V547	I352 I353 H356 I389 I530 T533 V534
BS27	CLA	A	L359 L363 I366 H370 S373 M374 F510	L346 L350 I353 H357 S360 M361 F497
BS28	CLA	A	W87 T141 S142 C389 H393 W396 I397 I737 W741 H745	W74 T128 S129 C376 H380 W383 I384 I724 W728 H732
BS29	CLA	A	W87 G143 L144 M147 F206 F360 S364 V367 M371 Y377 L390 H393 H394 I397	W74 G130 L131 M134 F193 F347 S351 V354 M358 Y364 L377 H380 H381 I384
BS30	CLA	A	H53 A54 H57 D58 L353 L357 F400 G404 H408 I411 F571 R572 W589	H40 A41 H44 D45 L340 L344 F387 G391 H395 I398 F558 R559 W576
BS31	CLA	A	T334 R429 H433 I437 H440	T321 R416 H420 I424 H427
BS32	CLA	A	H440 W443	H427 W430
BS33	CLA	A	W443 I446 F447 F450 H451	W430 I433 F434 F437 H438
BS34	CLA	A	F450 G454 L455 I457 H458 M462 R467 D470 F472	F437 G441 L442 I444 H445 M449 R454 D457 F459
BS35	CLA	A	W486 V487 V490 N491 A494 T498	W473 V474 V477 N478 A481 T485
BS36	CLA	A	T498 A499 P500 N501	T485 A486 P487 N488
BS37	CLA	A	H369 Y372 A484 V487 Q488 F510 I526 L528 H536 H539 V606 H609	H356 Y359 A471 V474 Q475 F497 I513 L515 H523 H526 V593 H596
BS38	CLA	A	V444 F447 L448 P481 V482 F483 A484 F533 H536 H537 A540	V431 F434 L435 P468 V469 F470 A471 F520 H523 H524 A527
BS39	CLA	A	I437 I543 H544 V547	I424 I530 H531 V534
BS40	CLA	A	I701 H705 F710	I688 H692 F697
BS41	CLA	A	T46 H705 F710 P716	T33 H692 F697 P703
BS42	CLA	A	W50 I679 F682 L719 A726 V727 H731 L734	W37 I666 F669 L706 A713 V714 H718 L721
BS43	CLA	A	H329 K330 P332 F333	H316 K317 P319 F320
BS44	PQN	A	M685 F686 R691 W694 A718 L719	M672 F673 R678 W681 A705 L706
BS45	SF4	A	C575 G577 C584 I721	C562 G564 C571 I708
BS46	CLA	A	L671 L674 H677 F678 A681	L658 L661 H664 F665 A668
BS47	CLA	A	F453 I457 D460 F541 F597 W598 N601 I643 W680 Y732	F440 I444 D447 F528 F584 W585 N588 I630 W667 Y719
BS48	CLA	A	L651 W652	L638 W639
BS49	CLA	A	N442 I446 G449 F450 F541 V545 L548 I549 F597 W598	N429 I433 G436 F437 F528 V532 L535 I536 F584 W585
BS50	CLA	A	T461 A464 L465	T448 A451 L452

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:0009842 cyanelle
• GO:0016020 membrane
• GO:0033115 cyanelle thylakoid membrane
• GO:0042651 thylakoid membrane

External links

• PDB: RCSB:7dr1, PDBe:7dr1, PDBj:7dr1
• PDBsum: 7dr1
• UniProt: P48112|PSAA_CYAPA Photosystem I P700 chlorophyll a apoprotein A1 (Gene Name=psaA)