Structure of PDB 7ac7 Chain 5 Binding Site BS01

Receptor Information
>7ac7 Chain 5 (length=147) Species: 83333 (Escherichia coli K-12) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
IALNKRARHEYFIEEEFEAGLALQGWEVKSLRAGKANISDSYVLLRDGEA
FLFGANITPMAVASTHVVCDPTRTRKLLLNQRELDSLYGRVNREGYTVVA
LSLYWKNAWCKVKIGVAKGKKQHDKRSDIKEREWQVDKARIMKNAHR
Ligand information
>7ac7 Chain 2 (length=1540) [Search RNA sequence] [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
aaauugaagaguuugaucauggcucagauugaacgcuggcggcaggccua
acacaugcaagucgaacgguaacaggaagaagcuugcuucuuugcugacg
aguggcggacgggugaguaaugucugggaaacugccugauggagggggau
aacuacuggaaacgguagcuaauaccgcauaacgucgcaagaccaaagag
ggggaccuucgggccucuugccaucggaugugcccagaugggauuagcua
guaggugggguaacggcucaccuaggcgacgaucccuagcuggucugaga
ggaugaccagccacacuggaacugagacacgguccagacuccuacgggag
gcagcaguggggaauauugcacaaugggcgcaagccugaugcagccaugc
cgcguguaugaagaaggccuucggguuguaaaguacuuucagcggggagg
aagggaguaaaguuaauaccuuugcucauugacguuacccgcagaagaag
caccggcuaacuccgugccagcagccgcgguaauacggagggugcaagcg
uuaaucggaauuacugggcguaaagcgcacgcaggcgguuuguuaaguca
gaugugaaauccccgggcucaaccugggaacugcaucugauacuggcaag
cuugagucucguagagggggguagaauuccagguguagcggugaaaugcg
uagagaucuggaggaauaccgguggcgaaggcggcccccuggacgaagac
ugacgcucaggugcgaaagcguggggagcaaacaggauuagauacccugg
uaguccacgccguaaacgaugucgacuuggagguugugcccuugaggcgu
ggcuuccggagcuaacgcguuaagucgaccgccuggggaguacggccgca
agguuaaaacucaaaugaauugacgggggcccgcacaagcgguggagcau
gugguuuaauucgaugcaacgcgaagaaccuuaccuggucuugacaucca
cggaaguuuucagagaugagaaugugccuucgggaaccgugagacaggug
cugcauggcugucgucagcucguguugugaaauguuggguuaagucccgc
aacgagcgcaacccuuauccuuuguugccagcgguccggccgggaacuca
aaggagacugccagugauaaacuggaggaagguggggaugacgucaaguc
aucauggcccuuacgaccagggcuacacacgugcuacaauggcgcauaca
aagagaagcgaccucgcgagagcaagcggaccucauaaagugcgucguag
uccggauuggagucugcaacucgacuccaugaagucggaaucgcuaguaa
ucguggaucagaaugccacggugaauacguucccgggccuuguacacacc
gcccgucacaccaugggaguggguugcaaaagaaguagguagcuuaaccu
ucgggagggcgcuuaccacuuugugauucaugacuggggugaagucguaa
caagguaaccguaggggaaccugcgguuggaucaccuccu
........<<<<....((((.>>>>.<<<<.<<<<<..<<<<<<<<....
.<<<.<<<..<<<..<<.<...<<<.<<<<........>.>>>.>>>.>.
.>>>>>......<<.......<<<<<<<..<<...<<<<<<<.<.<<..<
..<<<<<......>>>>>.....>>>.>.....<<<....>>>....<<<
<<<..<<....>>>>>>>>.>>>>>>>..>>.>>>>>>><<<....<<<.
.<<<<<<<.........>>>>>>>>>>......>>>..<<<<<<<<....
>>>>...>>>>.>>.<<<<.<<.........>>>>>>.<<<<<..>>>>>
...>>>>>>.........<<<...<<<<<....>>>>.>>>>..>>.>>>
>>>..<<<<......<<<<<..>>>>>.....>>>>...<.<<<<<....
..<.<<<<<<<<.......>>>>>>>>.>........>>>>>....>..<
<<<<(((...<<<<<.....<<.)))>>.......>>>>>>>>>>..>>>
>>>>>>..........<<<((.....<<<<...<<<.<<<<<<<.<<<<<
<<<<<......<<<<<<.....>>>>>>....>>>>>>>..>>>>>>>>>
>...<<<<<<<<...<<<<<<<....<<<<<<<<...<<<......>>>.
.....>>>>>>>>...........<<....>>.>>>>>>>..>>>.>>>>
>...>>>...>>>>....<<<<<<...<<...<<<<.<.....>.>>>>.
..>>>>>>>>..........<<<<<<.<<<<<<<<<<<<<.....>>>>>
>>>>>>>>..<<..))>>.....>>>>>>.>>>.<<<......<<<<...
.>>>>....>>>..))))..<<<<<.<<<<<<<.<<.<<<<<<..<<<<<
<<<<<......<<........>>..........<<<<<<<......<<<<
<<<..<<<<<<<....>>>>>>>...<<....>>..>>>>>.>>.<<<.<
<<..<<<<<<.......<<<<<<<<<....>>>..<<<<......>>>>.
.>>>>>>.....<<<<.<<<<<<<...<<..<<<.....>>>>>....>>
>>>>>.....<<<<<.....>>>>>........>>>>.........>>>.
..>>>>>>>>>...>>>>>>>...>>.>>>>>>>>.....<<<<<<<...
..<<<..<<...<<<....>>>...>>....>>>.....>>>>>>>....
.......<<<<<<<........>>>>>>>..........>>>>>>....<
<<<<<<.........>>>>>>>......>>...>>>>>>>>>>.>>....
<..<<.<.<<<<.<<<..<<<<<<<<<<<<....<<<<<<.<<<...<<<
..>>>..>>>>>>>>>...>>>>>>>>>>>>..>>.>>>>>..>.>>...
>.....<<<<<<<<<....>>>>>>>>>............
Receptor-Ligand Complex Structure
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PDB7ac7 Structures of tmRNA and SmpB as they transit through the ribosome.
Resolution3.08 Å
Binding residue
(original residue number in PDB)		K18 H22 R95 R106 E107 K134 Q135 H136 D137 K138 R139
Binding residue
(residue number reindexed from 1)		K5 H9 R82 R93 E94 K121 Q122 H123 D124 K125 R126
Enzymatic activity
Enzyme Commision number ?
Gene Ontology
Biological Process
GO:0070929 trans-translation
Cellular Component
GO:0005737 cytoplasm
GO:0005829 cytosol

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Molecular Function
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Biological Process
View graph for
Cellular Component
External links
PDB RCSB:7ac7, PDBe:7ac7, PDBj:7ac7
PDBsum7ac7
PubMed34389707
UniProtP0A832|SSRP_ECOLI SsrA-binding protein (Gene Name=smpB)

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