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3RTX

Crystal structure of mammalian capping enzyme (Mce1) and Pol II CTD complex

Functional Information from GO Data
ChainGOidnamespacecontents
A0004484molecular_functionmRNA guanylyltransferase activity
A0005524molecular_functionATP binding
A0006370biological_process7-methylguanosine mRNA capping
B0004484molecular_functionmRNA guanylyltransferase activity
B0005524molecular_functionATP binding
B0006370biological_process7-methylguanosine mRNA capping
Functional Information from PDB Data
site_idAC1
Number of Residues7
DetailsBINDING SITE FOR RESIDUE GUN A 1
ChainResidue
APRO273
AARG299
AASP343
AGLY344
AGLU345
AILE441
AGLN443

site_idAC2
Number of Residues8
DetailsBINDING SITE FOR RESIDUE GUN B 2
ChainResidue
BLYS294
BARG299
BASP343
BGLY344
BGLU345
BTYR362
BHOH15
BPRO273

Functional Information from PROSITE/UniProt
site_idPS00115
Number of Residues7
DetailsRNA_POL_II_REPEAT Eukaryotic RNA polymerase II heptapeptide repeat. YSPTSPS
ChainResidueDetails
CTYR5-SER11
CTYR12-SER18

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues112
DetailsRegion: {"description":"Interaction with POLR2A","evidences":[{"source":"PubMed","id":"21683636","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues2
DetailsActive site: {"description":"N6-GMP-lysine intermediate"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues2
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues10
DetailsBinding site: {"evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

246704

PDB entries from 2025-12-24

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