Structure of PDB 1ibk Chain T Binding Site BS01

Receptor Information
>1ibk Chain T (length=99) Species: 274 (Thermus thermophilus) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
RNLSALKRHRQSLKRRLRNKAKKSAIKTLSKKAIQLAQEGKAEEALKIMR
KAESLIDKAAKGSTLHKNAAARRKSRLMRKVRQLLEAAGAPLIGGGLSA
Ligand information
>1ibk Chain A (length=1506) [Search RNA sequence] [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
uggagaguuugauccuggcucagggugaacgcuggcggcgugccuaagac
augcaagucgugcgggccgcgggguuuuacuccguggucagcggcggacg
ggugaguaacgcgugggugaccuacccggaagagggggacaacccgggga
aacucgggcuaaucccccauguggacccgccccuugggguguguccaaag
ggcuuugcccgcuuccggaugggcccgcgucccaucagcuaguugguggg
guaauggcccaccaaggcgacgacggguagccggucugagaggauggccg
gccacaggggcacugagacacgggccccacuccuacgggaggcagcaguu
aggaaucuuccgcaaugggcgcaagccugacggagcgacgccgcuuggag
gaagaagcccuucgggguguaaacuccugaacccgggacgaaacccccga
cgaggggacugacgguaccgggguaauagcgccggccaacuccgugccag
cagccgcgguaauacggagggcgcgagcguuacccggauucacugggcgu
aaagggcguguaggcggccuggggcgucccaugugaaagaccacggcuca
accgugggggagcgugggauacgcucaggcuagacggugggagagggugg
uggaauucccggaguagcggugaaaugcgcagauaccgggaggaacgccg
auggcgaaggcagccaccugguccacccgugacgcugaggcgcgaaagcg
uggggagcaaaccggauuagauacccggguaguccacgcccuaaacgaug
cgcgcuaggucucugggucuccugggggccgaagcuaacgcguuaagcgc
gccgccuggggaguacggccgcaaggcugaaacucaaaggaauugacggg
ggcccgcacaagcgguggagcaugugguuuaauucgaagcaacgcgaaga
accuuaccaggccuugacaugcuagggaacccgggugaaagccuggggug
ccccgcgaggggagcccuagcacaggugcugcauggccgucgucagcucg
ugccgugagguguuggguuaagucccgcaacgagcgcaacccccgccguu
aguugccagcgguucggccgggcacucuaacgggacugcccgcgaaagcg
ggaggaaggaggggacgacgucuggucagcauggcccuuacggccugggc
gacacacgugcuacaaugcccacuacaaagcgaugccacccggcaacggg
gagcuaaucgcaaaaaggugggcccaguucggauuggggucugcaacccg
accccaugaagccggaaucgcuaguaaucgcggaucagccaugccgcggu
gaauacguucccgggccuuguacacaccgcccgucacgccaugggagcgg
gcucuacccgaagucgccgggagccuacgggcaggcgccgaggguagggc
ccgugacuggggcgaagucguaacaagguagcuguaccggaaggugcggc
uggauc
....<<<<..[.((((.>>>>.<<<<.<<<<<..<<<<<<<<..<..<<<
.<<<..<<<..<<.<<<<<<<<<.......>>>>>>>>>.>>>>>.....
.<<.......<<<<<<<<..<<...<<<<<<<.<<<<<....<<<<<...
...>>>>>.....>>>>>...<<<<<.<<<<<....>>>>>.>>>>>..<
<<<...>>>>.>>>>>>>..>>>>>>>>>><<<....<<<..<<<<<<<<
.......>>>>>>>>>>>......>>>..<<<<<<<<....>>>>...>>
>>.>>.<<<<<.<.........>>>>>>.<<<<....>>>>...>>>>>>
>........<<<....<<<<....>>>>..>>>..>>.>>>>>>..<<<<
......<<<<....>>>>.....>>>>....<<<<<........<<<<..
...>>>>..........>>>>>......<<<<<(((...<<<<<.....<
<.)))>>.......>>>>>>>>>>..>>>>>>>>>..........<<<((
.....<<<<...<<<.<<<<<<<.<<<<<<<<<<......<<<<<<....
.>>>>>>....>>>>>>>>..>>>>>>>>>...<<<<<<<<...<<<<<<
<....<<<<<<<.<..<<<......>>>.....>.>>>>>>>........
...<<....>>.>>>>>>>..>>>>>.>>>...>>>...>>>>....<<<
<<<...<<...<<<<.<.....>.>>>>...>>>>>>>>..........<
<<<<<..<<<<<<<<<<...>>>>>>>>>>...<<..))>>.....>>>>
>>.>>>.<<<......<<<<....>>>>....>>>..)))).]<<<<<.<
<<<<<<.<<.<<<<<<..<<<<<<<<<<......<<........>>....
......<<<<<<<.......<<<<<<<..<<.<<<<....>>>>>>..<.
<<.<....>>>..>>>>>>>>..<<<.<<<..<<<<<<.......<<<<<
<<<<....>>>..<<<<......>>>>..>>>>>>.....<<<<.<<<<<
<<..<<...<<<.....>>>.>>...>>>>>>>.....<<<<<....>>>
>>........>>>>.........>>>...>>>>>>>>>...>>>>>>>..
.>>.>>>>>>>>.....<<<<<<<.....<<<..<<..<<<<....>>>>
..>>....>>>.....>>>>>>>...........<<<<<<<........>
>>>>>>..........>>>>>>....<<<<<<<..........>>>>>>>
......>>...>>>>>>>>>>.>>....<..<<.<.<<<<.<<<..<<<<
<<<<<<<<<...<.<<<<....<<<....>>>.>>>>.>..>>>>>>>>>
>>>>..>>>.>>>>..>.>>...>.....<<<<<<<<<....>>>>>>>>
>.....
Receptor-Ligand Complex Structure
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PDB1ibk Recognition of cognate transfer RNA by the 30S ribosomal subunit.
Resolution3.31 Å
Binding residue
(original residue number in PDB)		L10 K14 R15 H16 R17 S19 R22 R23 N26 K27 S31 A32 T35 K38 K39 E60 S61 D64 K65 K68 S70 K74 N75 A78 R79 K81 S82 R83 M85 R86 K87 R89 G101 G102 G103 L104 S105
Binding residue
(residue number reindexed from 1)		L3 K7 R8 H9 R10 S12 R15 R16 N19 K20 S24 A25 T28 K31 K32 E53 S54 D57 K58 K61 S63 K67 N68 A71 R72 K74 S75 R76 M78 R79 K80 R82 G94 G95 G96 L97 S98
Enzymatic activity
Enzyme Commision number ?
Gene Ontology
Molecular Function
GO:0003723 RNA binding
GO:0003735 structural constituent of ribosome
GO:0019843 rRNA binding
GO:0070181 small ribosomal subunit rRNA binding
Biological Process
GO:0006412 translation
Cellular Component
GO:0005829 cytosol
GO:0005840 ribosome
GO:0015935 small ribosomal subunit
GO:1990904 ribonucleoprotein complex

View graph for
Molecular Function
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Biological Process
View graph for
Cellular Component
External links
PDB RCSB:1ibk, PDBe:1ibk, PDBj:1ibk
PDBsum1ibk
PubMed11340196
UniProtP80380|RS20_THET8 Small ribosomal subunit protein bS20 (Gene Name=rpsT)

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