Names & Taxonomy

Uniprot ID:
Q9NPF4
Entry Name:
OSGEP_HUMAN
Status:
reviewed
Protein Names:
Probable tRNA N6-adenosine threonylcarbamoyltransferase (EC 2.3.1.234) (N6-L-threonylcarbamoyladenine synthase) (t(6)A synthase) (O-sialoglycoprotein endopeptidase) (hOSGEP) (t(6)A37 threonylcarbamoyladenosine biosynthesis protein OSGEP) (tRNA threonylcarbamoyladenosine biosynthesis protein OSGEP)
Gene Names:
OSGEP GCPL1
Gene Names Primary:
OSGEP
Organism:
Homo sapiens (Human)

Structure

Length:
335
Sequence:
MPAVLGFEGSANKIGVGVVRDGKVLANPRRTYVTPPGTGFLPGDTARHHRAVILDLLQEALTESGLTSQDIDCIAYTKGPGMGAPLVSVAVVARTVAQLWNKPLVGVNHCIGHIEMGRLITGATSPTVLYVSGGNTQVIAYSEHRYRIFGETIDIAVGNCLDRFARVLKISNDPSPGYNIEQMAKRGKKLVELPYTVKGMDVSFSGILSFIEDVAHRMLATGECTPEDLCFSLQETVFAMLVEITERAMAHCGSQEALIVGGVGCNVRLQEMMATMCQERGARLFATDERFCIDNGAMIAQAGWEMFRAGHRTPLSDSGVTQRYRTDEVEVTWRD
Proteomes:
UP000005640

Subcellular location

Subcellular Location:
Cytoplasm

Function

Function:
Component of the EKC/KEOPS complex that is required for the formation of a threonylcarbamoyl group on adenosine at position 37 (t(6)A37) in tRNAs that read codons beginning with adenine. The complex is probably involved in the transfer of the threonylcarbamoyl moiety of threonylcarbamoyl-AMP (TC-AMP) to the N6 group of A37. OSGEP likely plays a direct catalytic role in this reaction, but requires other protein(s) of the complex to fulfill this activity.
Catalytic Activity:
L-threonylcarbamoyladenylate + adenine(37) in tRNA = AMP + N(6)-L-threonylcarbamoyladenine(37) in tRNA.
Cofactor:
COFACTOR: Name=a divalent metal cation; Xref=ChEBI:CHEBI:60240;
Gene Ontology Go:
cytoplasm
nucleus
metal ion binding
N(6)-L-threonylcarbamoyladenine synthase
gene expression
tRNA modification
tRNA processing
tRNA threonylcarbamoyladenosine modification
Gene Ontology Biological Process:
gene expression
tRNA modification
tRNA processing
tRNA threonylcarbamoyladenosine modification
Gene Ontology Molecular Function:
metal ion binding
N(6)-L-threonylcarbamoyladenine synthase
Gene Ontology Cellular Component:
cytoplasm
nucleus
Keywords:
Acyltransferase
Complete proteome
Cytoplasm
Metal-binding
Nucleus
Reference proteome
Transferase
tRNA processing

Publication

PubMed ID:
12039036 14702039 15489334 21269460 22912744 22814378