Structure of PDB 8p18 Chain Q Binding Site BS01

Receptor Information

>8p18 Chain Q (length=117) Species: 562 (Escherichia coli)

ARVKRGVIARARHKKILKQAKGYYGARSRVYRVAFQAVIKAGQYAYRDRR
QRKRQFRQLWIARINAAARQNGISYSKFINGLKKASVEIDRKILADIAVF
DKVAFTALVEKAKAALA

Ligand information

>8p18 Chain 1 (length=2899)

gguuaagcgacuaagcguacacgguggaugcccuggcagucagaggcgau
gaaggacgugcuaaucugcgauaagcgucgguaaggugauaugaaccguu
auaaccggcgauuuccgaauggggaaacccaguguguuucgacacacuau
cauuaacugaauccauagguuaaugaggcgaaccgggggaacugaaacau
cuaaguaccccgaggaaaagaaaucaaccgagauucccccaguagcggcg
agcgaacggggagcagcccagagccugaaucaguguguguguuaguggaa
gcgucuggaaaggcgcgcgauacagggugacagccccguacacaaaaaug
cacaugcugugagcucgaugaguagggcgggacacgugguauccugucug
aauauggggggaccauccuccaaggcuaaauacuccugacugaccgauag
ugaaccaguaccgugagggaaaggcgaaaagaaccccggcgaggggagug
aaaaagaaccugaaaccguguacguacaagcagugggagcacgcuuaggc
gugugacugcguaccuuuuguauaaugggucagcgacuuauauucuguag
caagguuaaccgaauaggggagccgaagggaaaccgagucuuaacugggc
guuaaguugcaggguauagacccgaaacccggugaucuagccaugggcag
guugaagguuggguaacacuaacuggaggaccgaaccgacuaauguugaa
aaauuagcggaugacuuguggcugggggugaaaggccaaucaaaccggga
gauagcugguucuccccgaaagcuauuuagguagcgccucgugaauucau
cuccggggguagagcacuguuucggcaagggggucaucccgacuuaccaa
cccgaugcaaacugcgaauaccggagaauguuaucacgggagacacacgg
cgggugcuaacguccgucgugaagagggaaacaacccagaccgccagcua
aggucccaaagucaugguuaagugggaaacgaugugggaaggcccagaca
gccaggauguuggcuuagaagcagccaucauuuaaagaaagcguaauagc
ucacuggucgagucggccugcgcggaagauguaacggggcuaaaccaugc
accgaagcugcggcagcgacgcgcguuguuggguaggggagcguucugua
agccugcgaaggugugcugugaggcaugcuggagguaucagaagugcgaa
ugcugacauaaguaacgauaaagcgggugaaaagcccgcucgccggaaga
ccaaggguuccuguccaacguuaaucggggcagggugagucgaccccuaa
ggcgaggccgaaaggcguagucgaugggaaacagguuaauauuccuguac
uugguguuacugcgaaggggggacggagaaggcuauguuggccgggcgac
gguugucccgguuuaagcguguaggcugguuuuccaggcaaauccggaaa
aucaaggcugaggcgugaugacgaggcacuacggugcugaagcaacaaau
gcccugcuuccaggaaaagccucuaagcaucagguaacaucaaaucguac
cccaaaccgacacagguggucagguagagaauaccaaggcgcuugagaga
acucgggugaaggaacuaggcaaaauggugccguaacuucgggagaaggc
acgcugauauguaggugaggucccucgcggauggagcugaaaucagucga
agauaccagcuggcugcaacuguuuauuaaaaacacagcacugugcaaac
acgaaaguggacguauacggugugacgccugcccggugccggaagguuaa
uugaugggguuagcgcaagcgaagcucuugaucgaagccccgguaaacgg
cggccguaacuauaacgguccuaagguagcgaaauuccuugucggguaag
uuccgaccugcacgaauggcguaaugauggccaggcugucuccacccgag
acucagugaaauugaacucgcugugaagaugcaguguacccgcggcaaga
cggaaagaccccgugaaccuuuacuauagcuugacacugaacauugagcc
uugauguguaggauaggugggaggcuuugaaguguggacgccagucugca
uggagccgaccuugaaauaccacccuuuaauguuugauguucuaacguug
acccguaauccggguugcggacagugucugguggguaguuugacuggggc
ggucuccuccuaaagaguaacggaggagcacgaagguuggcuaauccugg
ucggacaucaggagguuagugcaauggcauaagccagcuugacugcgagc
gugacggcgcgagcaggugcgaaagcaggucauagugauccggugguucu
gaauggaagggccaucgcucaacggauaaaagguacuccggggauaacag
gcugauaccgcccaagaguucauaucgacggcgguguuuggcaccucgau
gucggcucaucacauccuggggcugaaguaggucccaaggguauggcugu
ucgccauuuaaagugguacgcgagcuggguuuagaacgucgugagacagu
ucggucccuaucugccgugggcgcuggagaacugaggggggcugcuccua
guacgagaggaccggaguggacgcaucacugguguucggguugucaugcc
aauggcacugcccgguagcuaaaugcggaagagauaagugcugaaagcau
cuaagcacgaaacuugccccgagaugaguucucccugacccuuuaagggu
ccugaaggaacguugaagacgacgacguugauaggccggguguguaagcg
cagcgaugcguugagcuaaccgguacuaaugaaccgugaggcuuaaccu

<<<<<<<<......<<<<<<<<<<<.....[[..[[<<<<<<<[[<<...
...<<<<<<....(((.>>>.....<<<<<<<..<<<)))....>>>...
...>>>>>>>...>>>....<<<....>>><<<<<<<....>>>>>>>.<
<<<<<<<<.........>>>>>>>>>.>>...<<<<<<.....<<....>
>......>>>>>.>.........<<....>>..<<<<<<.....<<....
.>>....>>>>>>..(((..<<<<......<<<<<<<<<<<<<.<<<...
<<<<<......>>>>>((......<<<.....))>>>...>>>...>>>>
>>>>>>>>>...>>>>........<<<<<<<<.........>>>>>>>>.
.....<<<<<..<<<<>>>>>..)))......]].>>>>>>>.]].....
..........<<....>>....]].........<<<<.....>>>>....
..............>>>>>>>>>>>.......<<<<..<<<<<<....>>
>>>>..>>>>...<............>.<<<<<<....<<<<<<<<<<<<
<..<<<...<<.....>>...>>>...<<....>>..<<<<.....>>>>
.....>>>>>>>>>>>>>..<<.<...<<<<<<.....<<<<<<<<<..<
<<<...<<<<<<......>>>>>>.>...>>>...<<<.<<<<<......
..>>>>>>>>....>>>>>>>>>...<<<.....>>>......>>>>>>.
.....>.>>..<<<<<<....<<<<<....>>>>>.<<<<<<<<...<<<
<<<<<<.....<<<...<<<.<<<<...<<.<<<<.....>>>>..>>..
.>>>>.>>>..>>.>.....>>>>>>.>>>...>>>>>>>.>...<<<<<
<<<<<......>>>>>>>>>>....<<<......>>>...<<<<.<<<..
.<<<(((.....<<<<<<...........<<..<<<<<..<<........
<<<<<.<<...<<<<.......>>>>...>>........<<<......>>
>..>>>>>....>>..>>>>>.>>...........))).....>>>>>>.
>>>...>>>>>>><<<<<<<<..>>>>>>>>....>>>>>>..<<<<<..
.<<<......<<<<<<<<....>>>>>>>>...>>>..>>>>>.......
.>>>>>><......<<.....<<<<<<.......>>>>>><<<<....<<
<<<.<<...<<<<<<...<<.....>>.>>>>>>....((<<<.<<<...
<<<...<<<....>>>...>>>...>>>..<<<<<........>>>>>))
<<<<<<<<<<<<<...<<<<....<<<<..<<<..<<<<<<<<<<<....
(((...>>>>>><<..<<<<...<<<<<<<<<<<<.<<.....>>>>>>>
>>>..>>>>...>>>>...>><..<<<<<....>>>>>...>>>>>>...
>>>...>>>>.........>>>>...>>....>>>>>>>>>>>.>>>..>
>.....<<......>>>>>>>.<<<<.....>>>>..>>>>..<<<<...
.<<<<<<<<.<<...............<<<<<.....<..>......>>>
>><<<<<<.....<<<...<<<<.....>>>>...>>>...>>>>>>...
.........<<<<<<<<<..<<<.........>>>..<<<<<<<.....<
<<....>>>.......>>>>>>>.<<<<<.<<<..<<<<<<<..<<<...
.....<<<<<<.<<....>>..>>>>>>........>>>>>>>>..>>>>
><<<<<<.......>>>>>>........<...........<<<<<<....
.>>>>>>.....>....>>>>>..>>.>>>>>>>.....>>.>>>>>>>>
.>>>>>>.....>.....<<<<<........>>>>>..<<<<<<<<.(((
.[[......<<<<.[[<<<<..<<<<<.<<<.<<<<<.<<<<<<<<<<..
<<<<...........<<<<<..<<.......<<<<<<<<....>>>>>>>
>....>>............>>>>>..>>>>..>>>>>>>>>>...<<<.<
<<<<<.....>>>>>>>>>....>>>>>.>>>..>>>>>..<<<<.....
>>>><<<<<<...........>>>>>>..<<...<<<<<<<...<<<<<<
.......>>>>>>.....<<...(((>>....>>>>>>>...<<<<..<<
<<....>>>>..>>>>.<<<....>>>.>>))).......<<<<<<<.((
..>>>>..))>>>>>>>.............>>>>..]]>>>>.......<
<<<...<<<<<<...<<.......>>...>>>>>>....>>>.>......
.<<<<<.<<<<<<..<<<<<<<<<......>>>>>>..>>>.<<<<<...
..>>>>>.....>>>>>..>...>>>.>>....<<<<<<<....>>>.>>
>>....]]..)))>>>>>>>>....<<<<<<<...<<<<..<<<<<<<..
.............>>>>>>>.<<<<<...<<<<...<<<<<<<<<<<)))
.>>>>>>..>>>>>...>>>>.>>>>>...<<<....<<<<<........
...>>>>>....>>>.>>>>.......>>>>>>>..<<<<<.....>>>>
>.....<<..<<<<<.......>>>>>....<<<<<<<<..<<....<<<
<<....>>>>>...>>...>>>>>.>>>.....>>.....>>>>>>>>.

Receptor-Ligand Complex Structure

Structure summary

• PDB: 8p18 The compensatory mechanism of a naturally evolved E167K RF2 counteracting the loss of RF1 in bacteria
• Resolution: 2.77 Å
• Binding residue (original residue number in PDB): A2 R3 V4 K5 R6 G7 V8 I9 R11 R13 H14 K15 K22 G23 Y24 Y25 G26 A27 R28 R30 V31 Y32 R33 Q37 A42 Y45 A46 Y47 R48 D49 R50 R51 R53 K54 R55 F57 R58 Q59 W61 I62 N66 R70 S75 Y76 S77 N81 K84 D91 R92 K93
• Binding residue (residue number reindexed from 1): A1 R2 V3 K4 R5 G6 V7 I8 R10 R12 H13 K14 K21 G22 Y23 Y24 G25 A26 R27 R29 V30 Y31 R32 Q36 A41 Y44 A45 Y46 R47 D48 R49 R50 R52 K53 R54 F56 R57 Q58 W60 I61 N65 R69 S74 Y75 S76 N80 K83 D90 R91 K92

Gene Ontology

Molecular Function

• GO:0000900 mRNA regulatory element binding translation repressor activity
• GO:0003729 mRNA binding
• GO:0003735 structural constituent of ribosome
• GO:0019843 rRNA binding
• GO:0070180 large ribosomal subunit rRNA binding

Biological Process

• GO:0000027 ribosomal large subunit assembly
• GO:0002181 cytoplasmic translation
• GO:0017148 negative regulation of translation

Cellular Component

• GO:0005737 cytoplasm
• GO:0005829 cytosol
• GO:0005840 ribosome
• GO:0022625 cytosolic large ribosomal subunit
• GO:1990904 ribonucleoprotein complex

External links

• PDB: RCSB:8p18, PDBe:8p18, PDBj:8p18
• PDBsum: 8p18
• UniProt: P0A7L3|RL20_ECOLI Large ribosomal subunit protein bL20 (Gene Name=rplT)