Structure of PDB 8htu Chain B

Receptor sequence

>8htuB (length=733) Species: 3218 (Physcomitrium patens)

ASRFPKFSRGLSQDPTTRRIWFGIATAHDFESHDDMTEERLYQKIFASHF
GQLAIIFLWTSGNLFHVAWQGNFEAWGQDPLHVRPIAHAIWDPHFGQPAV
EAFTRGGASGPVNIAYSGVYQWWYTIGLRTNQDLYGGSIFLLFVSALFLI
AGWLHLQPKWKPSVSWFKNAESRLNHHLSGLFGVSSLAWTGHLVHVAIPE
SRGEHVRWNNLLTALPHPQGLGPFFAGQWNVYAQNPDSNSHLFGTSEGAG
TAILTFLGGFHPQTQSLWLTDMAHHHLAIAVIFIIAGHMYRTNFGIGHSM
KEILEAHTPPGGRLGRGHKGLYDTINNSLHFQLGLALASLGVITSLVAQH
MYSLPPYAFLAQDFTTQAALYTHHQYIAGFIMTGAFAHGAIFFIRDYNPE
QNKDNVLARMLEHKEAIISHLSWASLFLGFHTLGLYVHNDVMLAFGTPEK
QILIEPVFAQWIQSAHGKALYGFDVLLSSADSPAFNAGQTLWLPGWLDAI
NNNSNSLFLTIGPGDFLVHHAIALGLHTTTLILVKGALDARGSKLMPDKK
EFGYSFPCDGPGRGGTCDISAWDAFYLAVFWMLNTIGWVTFYWHWKHITL
WQGNVAQFNESSTYLMGWLRDYLWLNSSQLINGYNPFGMNSLSVWAWMFL
FGHLVWATGFMFLISWRGYWQELIETLAWAHERTPLANLVRWKDKPVALS
IVQARLVGLAHFSVGYIFTYAAFLIASTSGKFG

3D structure

• PDB: 8htu Structural insights into the assembly and energy transfer of the Lhcb9-dependent photosystem I from moss Physcomitrium patens.
• Chain: B
• Resolution: 2.87 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	S426 L427 G430 F431 L434 I533 F581 W582	S425 L426 G429 F430 L433 I532 F580 W581
BS02	CLA	B	W648 L651 F652 H654 L655 W657 A658	W647 L650 F651 H653 L654 W656 A657
BS03	CLA	B	S420 W424 L427	S419 W423 L426
BS04	CLA	B	L678 H682	L677 H681
BS05	SF4	B	C559 G561 C568 W667	C558 G560 C567 W666
BS06	CLA	B	D441 W582 N585 W589 L616 W657	D440 W581 N584 W588 L615 W656
BS07	CLA	B	Y437 W589 F592 W619 S628 F650 H654 W657 Y717 T720 Y721 F724	Y436 W588 F591 W618 S627 F649 H653 W656 Y716 T719 Y720 F723
BS08	CLA	B	A658 M662 Y670 W671	A657 M661 Y669 W670
BS09	CLA	B	A28 H29 F31 I56	A27 H28 F30 I55
BS10	CLA	B	H29 E32 I46 S49 H50 Q53 R174 L330 L334 A337	H28 E31 I45 S48 H49 Q52 R173 L329 L333 A336
BS11	CLA	B	H29 Q53 I57 W60	H28 Q52 I56 W59
BS12	CLA	B	F66 H67 W70	F65 H66 W69
BS13	CLA	B	N64 A88 H89 N114 A116 S118 W646	N63 A87 H88 N113 A115 S117 W645
BS14	CLA	B	I91 W92 D93 H95 F96 N114 V645	I90 W91 D92 H94 F95 N113 V644
BS15	CLA	B	F47 F51 A152 H156 W161 W167	F46 F50 A151 H155 W160 W166
BS16	CLA	B	W167 S173 H177 T293	W166 S172 H176 T292
BS17	CLA	B	F47 H50 F51 L54 W123 W167 R174 H177 H178 L182	F46 H49 F50 L53 W122 W166 R173 H176 H177 L181
BS18	CLA	B	L129 F141 A189 W190 H193 H196 V197 R208 W209 L212	L128 F140 A188 W189 H192 H195 V196 R207 W208 L211
BS19	CLA	B	G192 V195 H196 L213 L216 P217	G191 V194 H195 L212 L215 P216
BS20	CLA	B	F225 W230 F257 H275 L278 A279 V282 L492	F224 W229 F256 H274 L277 A278 V281 L491
BS21	CLA	B	F257 H276 H351 W493	F256 H275 H350 W492
BS22	CLA	B	I127 W190 M273 H276 H277 I280 I344 V348 P357 Y358	I126 W189 M272 H275 H276 I279 I343 V347 P356 Y357
BS23	CLA	B	L179 F284 A287 M290 Y291	L178 F283 A286 M289 Y290
BS24	CLA	B	N176 H177 S180 H289 T293 F295	N175 H176 S179 H288 T292 F294
BS25	CLA	B	I286 M290 G298 H299	I285 M289 G297 H298
BS26	CLA	B	H299 E303 I304 A307 H308	H298 E302 I303 A306 H307
BS27	CLA	B	L305 H308 H319 L322 V407 M411	L304 H307 H318 L321 V406 M410
BS28	CLA	B	A171 R174 L175 H178 M301 Y323 L336 A337 S340	A170 R173 L174 H177 M300 Y322 L335 A336 S339
BS29	CLA	B	S346 L347 Q350 M383 F387 L527 T531 M583	S345 L346 Q349 M382 F386 L526 T530 M582
BS30	CLA	B	V343 L347 Q350 H351 S354 F509	V342 L346 Q349 H350 S353 F508
BS31	CLA	B	W60 S118 T373 H374 Y377 I378 F381	W59 S117 T372 H373 Y376 I377 F380
BS32	CLA	B	W60 G119 W123 T345 V348 M352 Y358 L371 H374 H375	W59 G118 W122 T344 V347 M351 Y357 L370 H373 H374
BS33	CLA	B	A26 H29 D30 L334 F381 G385 H389 I392 Y555 W573 F576 F719	A25 H28 D29 L333 F380 G384 H388 I391 Y554 W572 F575 F718
BS34	CLA	B	R314 L315 R410 M411 H414 H421	R313 L314 R409 M410 H413 H420
BS35	CLA	B	W424 L427 F428 F431 H432	W423 L426 F427 F430 H431
BS36	CLA	B	G435 V438 H439 M443 K451 I453	G434 V437 H438 M442 K450 I452
BS37	CLA	B	I463 H467 L477 L478 W493 W497	I462 H466 L476 L477 W492 W496
BS38	CLA	B	L477 P484 A488 W493	L476 P483 A487 W492
BS39	CLA	B	Q350 Y353 F459 A460 I463 Q464 L510 H520 I523 V590 Y593 W594	Q349 Y352 F458 A459 I462 Q463 L509 H519 I522 V589 Y592 W593
BS40	CLA	B	F428 L429 P457 F459 A460 F517 H520 H521	F427 L428 P456 F458 A459 F516 H519 H520
BS41	CLA	B	L422 H528	L421 H527
BS42	CLA	B	T18 W22 L678 A679 H682 W693 P697	T17 W21 L677 A678 H681 W692 P696
BS43	CLA	B	F652 T659 F663 V708 A711 H712	F651 T658 F662 V707 A710 H711
BS44	CLA	B	H308 T309 P311	H307 T308 P310
BS45	PQN	B	M662 F663 S666 W667 W671 L700 A705	M661 F662 S665 W666 W670 L699 A704

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:0009507 chloroplast
• GO:0009522 photosystem I
• GO:0009535 chloroplast thylakoid membrane
• GO:0009579 thylakoid
• GO:0016020 membrane

External links

• PDB: RCSB:8htu, PDBe:8htu, PDBj:8htu
• PDBsum: 8htu
• PubMed: 37474782
• UniProt: Q8MFA2|PSAB_PHYPA Photosystem I P700 chlorophyll a apoprotein A2 (Gene Name=psaB)