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3AGO

Crystal Structure of Ustilago sphaerogena Ribonuclease U2 complexed with adenosine 3'-monophosphate

Functional Information from GO Data
ChainGOidnamespacecontents
A0003723molecular_functionRNA binding
A0004518molecular_functionnuclease activity
A0004519molecular_functionendonuclease activity
A0004521molecular_functionRNA endonuclease activity
A0004540molecular_functionRNA nuclease activity
A0016787molecular_functionhydrolase activity
A0016829molecular_functionlyase activity
A0033899molecular_functionribonuclease U2 activity
A0046872molecular_functionmetal ion binding
Functional Information from PDB Data
site_idAC1
Number of Residues16
DetailsBINDING SITE FOR RESIDUE 3AM A 115
ChainResidue
ATYR39
AHIS101
AASP108
APHE110
AHOH149
AHOH159
AHOH162
AHOH189
AHIS41
AGLN42
ATYR43
ATYR44
AGLU46
AGLU49
AGLU62
AARG85

site_idAC2
Number of Residues5
DetailsBINDING SITE FOR RESIDUE CA A 116
ChainResidue
AASP29
AALA31
AASN32
AASN38
ATYR39

site_idAC3
Number of Residues6
DetailsBINDING SITE FOR RESIDUE CA A 117
ChainResidue
AASP45
AILE51
AHOH141
AHOH215
AHOH216
AHOH220

site_idAC4
Number of Residues5
DetailsBINDING SITE FOR RESIDUE CL A 118
ChainResidue
AARG35
AASN38
ATYR39
ATYR71
ASER73

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues1
DetailsActive site: {"evidences":[{"source":"Reference","evidenceCode":"ECO:0000269","citation":{"citationType":"book","publicationDate":"1973","firstPage":"453","lastPage":"472","publisher":"Publ. House Slovak Acad. Sci.","address":"Bratislava","bookName":"Ribosomes and RNA metabolism","editors":["Zelinka J.","Balan J."],"authors":["Uchida T.","Sato S."]}}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1
DetailsActive site: {"description":"Proton acceptor","evidences":[{"source":"Reference","evidenceCode":"ECO:0000269","citation":{"citationType":"book","publicationDate":"1973","firstPage":"453","lastPage":"472","publisher":"Publ. House Slovak Acad. Sci.","address":"Bratislava","bookName":"Ribosomes and RNA metabolism","editors":["Zelinka J.","Balan J."],"authors":["Uchida T.","Sato S."]}}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues1
DetailsActive site: {"description":"Proton donor","evidences":[{"source":"Reference","evidenceCode":"ECO:0000269","citation":{"citationType":"book","publicationDate":"1973","firstPage":"453","lastPage":"472","publisher":"Publ. House Slovak Acad. Sci.","address":"Bratislava","bookName":"Ribosomes and RNA metabolism","editors":["Zelinka J.","Balan J."],"authors":["Uchida T.","Sato S."]}}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues6
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"20858208","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues13
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues1
DetailsSite: {"description":"Methylation inactivates enzyme","evidences":[{"source":"PubMed","id":"7492561","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idMCSA1
Number of Residues4
DetailsM-CSA 908
ChainResidueDetails
AHIS41proton shuttle (general acid/base)
AGLU62proton shuttle (general acid/base)
AARG85electrostatic stabiliser
AHIS101proton shuttle (general acid/base)

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PDB entries from 2025-07-23

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