Structure of PDB 3j81 Chain X Binding Site BS01

Receptor Information
>3j81 Chain X (length=144) Species: 28985 (Kluyveromyces lactis) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
GKGKPRGLNSARKLRVHRRNNRWAETTYKKRLLGTAFKSSPFGGSSHAKG
IVLEKIGIESKQPNSAIRKCVRVQLIKNGKKVTAFVPNDGCLNFVDENDE
VLLAGFGRKGKAKGDIPGVRFKVVKVSGVSLLALWKEKKEKPRS
Ligand information
>3j81 Chain 2 (length=1780) [Search RNA sequence] [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
uaucugguugauccugccaguagucauaugcuugucucaaagauuaagcc
augcaugucuaaguauaagcaauuuauacagugaaacugcgaauggcuca
uuaaaucaguuaucguuuauuugauaguuccuuuacuacauggauaucug
ugguaauucuagagcuaauacaugcuuaaaaucucgacccuuuggaagag
auguauuuauuagauaaaaaaucaaugucuucggacuccuugaugauuca
uaauaacuuuucgaaucgcauggccuugugcuggcgaugguucauucaaa
uuucugcccuaucaacuuucgaugguaggauaguggccuaccaugguuuc
aacggguaacggggaauaaggguucgauuccggagagggagccugagaaa
cggcuaccacauccaaggaaggcagcaggcgcgcaaauuacccaauccua
auucagggagguagugacaauaaauaacgauacagggcccauucgggucu
uguaauuggaaugaguacaauguaaauaccuuaacgaggaacaacuggag
ggcaagucuggugccagcagccgcgguaauuccagcuccaguagcguaua
uuaaaguuguugcaguuaaaaagcucguaguugaacuuugggucugguug
uccggucgguuuuucaaccggaucuuuccuucuggcuaaccuguacuccu
ugugggugcaggcgaaccaggacuuuuacuuugaaaaaauuagaguguuc
aaagcaggcgaaagcucgaauauauuagcauggaauaauggaauaggacg
uuugguucuauuuuguugguuucuaggaccaucguaaugauuaauaggga
cggucgggggcaucaguauucaauugucagaggugaaauucuuggauuua
uugaagacuaacuacugcgaaagcauuugccaaggacguuuucauuaauc
aagaacgaaaguuaggggaucgaagaugaucagauaccgucguagucuua
accauaaacuaugccgacuagggaucgggugguguuuuucuuaugaccca
cucggcaccuuacgagaaaucaaagucuuuggguucuggggggaguaugg
ucgcaaggcugaaacuuaaaggaauugacggaagggcaccaccaggagug
gagccugcggcuuaauuugacucaacacggggaaacucaccagguccaga
cacaauaaggauugacagauugagagcucuuucuugauuuuguggguggu
ggugcauggccguucuuaguugguggagugauuugucugcuuaauugcga
uaacgaacgagaccuuaaccuacuaaauaggguugcuggcacuugccggu
ugacucuucuuagagggacuaucgguuucaagccgauggaaguuugaggc
aauaacaggucugugaugcccuuagacguucugggccgcacgcgcgcuac
acugacggagccagcgaguacaaccuuggccgagaggucuggguaaucuu
gugaaacuccgucgugcuggggauagagcauuguaauuauugcucuucaa
cgaggaauuccuaguaagcgcaagucaucagcuugcguugauuacguccc
ugcccuuuguacacaccgcccgucgcuaguaccgauugaauggcuuagug
aggccucaggauuugcuuagagaagggggcaacuccaucucagagcgaag
aaucuggucaaacuuggucauuuagaggaacuaaaagucguaacaagguu
uccguaggugaaccugcggaaggaucauua
...<<<<<...[[[[>>>>>[[[..((((((................[[[
.[[[..<<....<<....<<..........>>...>>.>>......{{..
......[[[..{{..{{....[[[..................<.<..<<.
<<.......>>.>>.....>>.........<<<<<..<<....>>..>>>
>>[...((((((......<<<<<<<<<<<....>>>..............
)))))).....]...<<<<..<<<.....>>>.>>>>....]]]...}}}
}..]]].<<<....<<<....<<<<<<<<.......>>>>>>>>>>>...
...>>>...<<<.<<<<....>>>>....>>>.}}.<<.<<<........
..>>>.>>.<.<<....>>..>..]]]]]].........<<<....<<<.
....>>>..>>>...............<<.<<<<<<............>>
>>>>..>.>.....<<.................>>.........<<<<<(
(......<<<<.....<<..))>>.......>>>>.>>>>>..)))))).
]]].........[[[{{.......{{...[[[.[[.....<<<<<<<<<<
.....<<>>.....>>>>>>>>>.>....<<<<<<....<.<.<..<...
....>..>.>.>....>>>>>>...<<<<<.<<.......<<...<....
...>..<<.......>>...>>......>>.>>..>>>.........[[.
..((((((((....>>>>>>>>.))))))))..]].....]]....<<<<
<<.<<...<<<<..<<..<<<<<<.<...<<<......>>>......>.>
>>>>>..>>.......<<....>>...>>>>...>>>>>.>>>...]]].
..}}......<<<<<<<...<...<<<<.<.....>.>>>>...>>>>>>
>>..........<<<.<<.<<<..<<<<<<<<.<<.<.......>>>>>>
>>>>>..>>>...<<..}}>>...>>.....>>>.]]].<<<......<<
<<....>>>>....>>>..]]]]..<<<<<.<<<<<<<..<<.<<<<<<.
.<<<.<<<<<<......<<........>>..........<<<<<.<....
<<<<<.....<..<<..<<........>.>.>>.>....>>>>>...<<.
<<<..<<.<<<<<<....<<<.<<<<......>>...<<<......>>>.
..>>.>>>....<<<<<.<<..<<<<..<<<<<<<<<<<<....>>>>>>
.>>>>>>..>>>>.>>....<<<<<<.....>>>>>>.......>>>>>.
...>>>.>>>.....>>>>>>>.....>.>>>>>...>>.>>>>.>>>..
...<<<<<<<......<<.....<<<.<<<<....>>>.>>>>....>>.
......>>>>>>>......<....<<<<<<..........>>>>>>....
>.....>>>>>>....<<<<<<<<.......>>>>>>>>......>>...
>>>>>>>>>>.>>....<..<<.<..<<<<.<<....<<.<<<.<.<<<.
.<<<<..<...<<<<<....<..................>....>>>>>.
..>..>>>>..>>>.>.>>>.>>...>>.>>>>...>.>>...>.....<
<<<<<<<<<..>>>>>>>>>>.........
Receptor-Ligand Complex Structure
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PDB3j81 Structural changes enable start codon recognition by the eukaryotic translation initiation complex.
Resolution4.0 Å
Binding residue
(original residue number in PDB)
G2 K3 G4 K5 P6 R7 G8 L9 N10 S11 R13 K14 L15 R16 H18 R19 R20 N22 R23 W24 A25 E26 K31 R32 F38 K39 S40 S47 H48 A49 K50 K62 Q63 N65 S66 A67 R69 K70 R73 K78 P88 N89 D90 G91 A105 G106 F107 G108 R109 K110 K112 K114 G115 D116 R121 K126 S131
Binding residue
(residue number reindexed from 1)
G1 K2 G3 K4 P5 R6 G7 L8 N9 S10 R12 K13 L14 R15 H17 R18 R19 N21 R22 W23 A24 E25 K30 R31 F37 K38 S39 S46 H47 A48 K49 K61 Q62 N64 S65 A66 R68 K69 R72 K77 P87 N88 D89 G90 A104 G105 F106 G107 R108 K109 K111 K113 G114 D115 R120 K125 S130
Enzymatic activity
Enzyme Commision number ?
Gene Ontology
Molecular Function
GO:0003735 structural constituent of ribosome
Biological Process
GO:0006412 translation
Cellular Component
GO:0005840 ribosome
GO:0015935 small ribosomal subunit
GO:0022627 cytosolic small ribosomal subunit
GO:1990904 ribonucleoprotein complex

View graph for
Molecular Function

View graph for
Biological Process

View graph for
Cellular Component
External links
PDB RCSB:3j81, PDBe:3j81, PDBj:3j81
PDBsum3j81
PubMed25417110
UniProtF2Z602

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