Structure of PDB 7f4v Chain aA

Receptor sequence

>7f4vaA (length=772) Species: 251221 (Gloeobacter violaceus PCC 7421)

PVRVLVDNDPVPTSTEKWGKPGWFERNLARGPKTTTWIWDLHALAHDFET
HTSDKEEISRKIFSAHFGHLAVVCVWLSGMFWHGAYFSNFTAWMENPLGL
KPSAQTVWPVFGQEILNDPSTVAKGFEQGGIVITSGLFHLWRAVGFTTTG
QLAAMSIAMLIIAALFLFAGWFHYHKRAPKLEWFQNVESMLNHHLAGLFG
LGSLFWTGHLIHVALPVKAQLDAGIAPAQVNPFAGLDYGLMGQYFPKGFG
PNGGLGAFFTLNWGQFTDFLTFKGGLEPATGALYLTDIAHHHLAIATLFI
IAGHMYRTNWGIGHSIKEMLEAHKGPLTGEGHRGLYEVLTTSWHAQLAIN
LAMAGSITIIVAHHMYAMNPYPYMGTDYATQISLFTHHMWIGGFLIVGAG
AHAAIFMVRDYDPVTNQNNLLDRVLRHRDAIISHLNWVTLFLGFHSFGLY
VHNDTMQALGRPRDMFADFAIPLQPVFAQWIQNIHAAAPGGATAPWVGGT
SPTWYTGALSSAATLQANQVLALANDKISISPIHLGTADFMVHHIFALCI
HVTVLILLKGVLFARSSRLIPDKANLGFRFPCDGPGRGGTCQSSAWDHVF
LGLFWMYNTISVVIFHFSWKMQSDVWGTVDRSTGAVNHIIGNTDVLLGGQ
TVALSQYAASSININGWLRDFLWAQSSAVINSYGGPLSAYGLMFLGAHFI
WAFSLMFLFSGRGYWQELIESIVWAHNKLKVAPAIQPRALSITQGRAVGV
AHYLLGGIATTWAFFLARFLAL

3D structure

• PDB: 7f4v Structural basis for the absence of low-energy chlorophylls responsible for photoprotection from a primitive cyanobacterial PSI
• Chain: aA
• Resolution: 2.04 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	aA	Y460 I555 Y617 N618 S621 F625 I674 W677 L682 S686 F704 H708 W711 Y763 T770 T771 F774	Y450 I545 Y607 N608 S611 F615 I664 W667 L672 S676 F694 H698 W701 Y753 T760 T761 F764
BS02	CLA	aA	F457 W615 N618 I674 W711 Y763	F447 W605 N608 I664 W701 Y753
BS03	CLA	aA	F709 A712 F713 L715 M716 Y724 W725 L728	F699 A702 F703 L705 M706 Y714 W715 L718
BS04	CLA	aA	I48 W49 L51 H52	I38 W39 L41 H42
BS05	CLA	aA	H52 A55 H56 G78 H79 L177	H42 A45 H46 G68 H69 L167
BS06	CLA	aA	H56 I72 A75 H76 H79 L80 W353 H354 Q356 L357 N360	H46 I62 A65 H66 H69 L70 W343 H344 Q346 L347 N350
BS07	CLA	aA	H56 H79 V82 W86 L405	H46 H69 V72 W76 L395
BS08	CLA	aA	G89 W92 H93 F97 W118	G79 W82 H83 F87 W108
BS09	CLA	aA	W86 M90 Q115 I141 I143 T144 S145 Y700	W76 M80 Q105 I131 I133 T134 S135 Y690
BS10	CLA	aA	Q115 V117 W118 Q123 A699 L702	Q105 V107 W108 Q113 A689 L692
BS11	CLA	aA	V14 V16 F73 F77 A179 F182 H183 R187 W193	V4 V6 F63 F67 A169 F172 H173 R177 W183
BS12	CLA	aA	T23 S24 K27 W28 W33 K71 S74 V82 L177 G180 Y184 H185	T13 S14 K17 W18 W23 K61 S64 V72 L167 G170 Y174 H175
BS13	CLA	aA	V12 R13 V14 W193 N196 H203 W320	V2 R3 V4 W183 N186 H193 W310
BS14	CLA	aA	F73 H76 F77 W193 F194 M200 H203 H204	F63 H66 F67 W183 F184 M190 H193 H194
BS15	CLA	aA	G155 F156 M165 F215 W216 H219 H222 V223	G145 F146 M155 F205 W206 H209 H212 V213
BS16	CLA	aA	F215 G218 I221 H222 L246 Y248 F259 G264	F205 G208 I211 H212 L236 Y238 F249 G254
BS17	CLA	aA	L271 W273 F276 L280 F282 H300 L303 A304 T307	L261 W263 F266 L270 F272 H290 L293 A294 T297
BS18	CLA	aA	F282 G284 L293 D297 I298 H300 H301 A304 I305 H374 M378	F272 G274 L283 D287 I288 H290 H291 A294 I295 H364 M368
BS19	CLA	aA	W216 H301 H302 I305 H374 M375 Y381	W206 H291 H292 I295 H364 M365 Y371
BS20	CLA	aA	N202 H203 A206 G207 H314 T318 W320	N192 H193 A196 G197 H304 T308 W310
BS21	CLA	aA	L205 F309 A312 M315 Y316 M329 M363	L195 F299 A302 M305 Y306 M319 M353
BS22	CLA	aA	I311 H314 M315 I322 G323 H324	I301 H304 M305 I312 G313 H314
BS23	CLA	aA	H324 E328 M329 A332 H333	H314 E318 M319 A322 H323
BS24	CLA	aA	L330 H333 H342 L345 L430	L320 H323 H332 L335 L420
BS25	CLA	aA	V197 M200 L201 H204 L205 F209 I326 L349 T350 W353 Q356 I359 N360 M363	V187 M190 L191 H194 L195 F199 I316 L339 T340 W343 Q346 I349 N350 M353
BS26	CLA	aA	I369 I370 H373 I406 I560 V564	I359 I360 H363 I396 I550 V554
BS27	CLA	aA	I370 H373 H374 A377 M378 W514	I360 H363 H364 A367 M368 W504
BS28	CLA	aA	W86 S145 S393 T396 H397 W400 I768 W772	W76 S135 S383 T386 H387 W390 I758 W762
BS29	CLA	aA	G146 L147 L150 F209 T368 V371 M375 Y381 L394 H397 H398	G136 L137 L140 F199 T358 V361 M365 Y371 L384 H387 H388
BS30	CLA	aA	H52 A53 H56 D57 L357 L361 F404 G408 A411 H412 I415 R419 R589 W606	H42 A43 H46 D47 L347 L351 F394 G398 A401 H402 I405 R409 R579 W596
BS31	CLA	aA	L337 T338 R433 V434 H437 H444	L327 T328 R423 V424 H427 H434
BS32	CLA	aA	H444 W447	H434 W437
BS33	CLA	aA	W447 L450 F451 F454 H455	W437 L440 F441 F444 H445
BS34	CLA	aA	F454 G458 L459 V461 H462 M466 R471 D474 F476	F444 G448 L449 V451 H452 M456 R461 D464 F466
BS35	CLA	aA	I491 I494 H495 A498 T503 A504	I481 I484 H485 A488 T493 A494
BS36	CLA	aA	F282 T503 A504 P505 W506	F272 T493 A494 P495 W496
BS37	CLA	aA	H373 F487 A488 I491 Q492 W514 I543 H553 F556 V623 H626	H363 F477 A478 I481 Q482 W504 I533 H543 F546 V613 H616
BS38	CLA	aA	F451 L452 P485 V486 F487 A488 F550 H553 H554	F441 L442 P475 V476 F477 A478 F540 H543 H544
BS39	CLA	aA	L445 I560 H561 V564	L435 I550 H551 V554
BS40	CLA	aA	I732 H736	I722 H726
BS41	CLA	aA	T45 I48 H736 P743 P747	T35 I38 H726 P733 P737
BS42	CLA	aA	I710 F713 L750 A757 V758 H762	I700 F703 L740 A747 V748 H752
BS43	CLA	aA	W447 L450	W437 L440
BS44	CLA	aA	H333 K334 P336 L337	H323 K324 P326 L327
BS45	1L3	aA	M716 F717 S720 R722 W725 A749 L750	M706 F707 S710 R712 W715 A739 L740
BS46	SF4	aA	C592 G594 P595 C601 I752	C582 G584 P585 C591 I742
BS47	CLA	aA	L705 G706 H708 F709 A712	L695 G696 H698 F699 A702
BS48	CLA	aA	L678 L682 W683	L668 L672 W673
BS49	CLA	aA	N446 T449 L450 G453 F454 L565 I566 F614 W615	N436 T439 L440 G443 F444 L555 I556 F604 W605
BS50	CLA	aA	T465 A468 L469	T455 A458 L459
BS51	CLA	aA	W734 K738 L739	W724 K728 L729

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:0005886 plasma membrane
• GO:0009522 photosystem I
• GO:0009579 thylakoid
• GO:0016020 membrane

External links

• PDB: RCSB:7f4v, PDBe:7f4v, PDBj:7f4v
• PDBsum: 7f4v
• UniProt: Q7NFT6|PSAA_GLOVI Photosystem I P700 chlorophyll a apoprotein A1 (Gene Name=psaA)