ID   TRM3_PSHV1              Reviewed;         506 AA.
AC   Q6UDI2;
DT   05-APR-2011, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2004, sequence version 1.
DT   03-AUG-2022, entry version 50.
DE   RecName: Full=Tripartite terminase subunit 3 {ECO:0000255|HAMAP-Rule:MF_04013};
DE            EC=3.1.-.- {ECO:0000255|HAMAP-Rule:MF_04013};
DE   AltName: Full=Terminase large subunit {ECO:0000255|HAMAP-Rule:MF_04013};
GN   Name=TRM3 {ECO:0000255|HAMAP-Rule:MF_04013}; OrderedLocusNames=UL15;
OS   Psittacid herpesvirus 1 (isolate Amazon parrot/-/97-0001/1997) (PsHV-1)
OS   (Pacheco's disease virus).
OC   Viruses; Duplodnaviria; Heunggongvirae; Peploviricota; Herviviricetes;
OC   Herpesvirales; Herpesviridae; Alphaherpesvirinae; Iltovirus.
OX   NCBI_TaxID=670426;
OH   NCBI_TaxID=152276; Amazona oratrix (yellow-headed parrot).
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=16873243; DOI=10.1128/jvi.00134-06;
RA   Thureen D.R., Keeler C.L. Jr.;
RT   "Psittacid herpesvirus 1 and infectious laryngotracheitis virus:
RT   Comparative genome sequence analysis of two avian alphaherpesviruses.";
RL   J. Virol. 80:7863-7872(2006).
CC   -!- FUNCTION: Component of the molecular motor that translocates viral
CC       genomic DNA in empty capsid during DNA packaging. Forms a tripartite
CC       terminase complex together with TRM1 and TRM2 in the host cytoplasm.
CC       Once the complex reaches the host nucleus, it interacts with the capsid
CC       portal vertex. This portal forms a ring in which genomic DNA is
CC       translocated into the capsid. TRM3 carries an RNase H-like nuclease
CC       activity that plays an important role for the cleavage of concatemeric
CC       viral DNA into unit length genomes. {ECO:0000255|HAMAP-Rule:MF_04013}.
CC   -!- SUBUNIT: Interacts with the terminase subunits TRM1 and TRM2. Interacts
CC       with portal protein. {ECO:0000255|HAMAP-Rule:MF_04013}.
CC   -!- SUBCELLULAR LOCATION: Host nucleus {ECO:0000255|HAMAP-Rule:MF_04013}.
CC       Note=Responsible for the nuclear localization of the two others
CC       subunits TRM1 and TRM2. {ECO:0000255|HAMAP-Rule:MF_04013}.
CC   -!- SIMILARITY: Belongs to the herpesviridae TRM3 protein family.
CC       {ECO:0000255|HAMAP-Rule:MF_04013}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; AY372243; AAQ73728.1; -; Genomic_DNA.
DR   SMR; Q6UDI2; -.
DR   Proteomes; UP000006840; Genome.
DR   GO; GO:0042025; C:host cell nucleus; IEA:UniProtKB-SubCell.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0004518; F:nuclease activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0051276; P:chromosome organization; IEA:InterPro.
DR   GO; GO:0019076; P:viral release from host cell; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.30.420.320; -; 1.
DR   HAMAP; MF_04013; HSV_TRM3; 1.
DR   InterPro; IPR003498; DNA_pack_C.
DR   InterPro; IPR038435; DNA_pack_C_sf.
DR   InterPro; IPR033663; HSV_TRM3.
DR   Pfam; PF02499; DNA_pack_C; 1.
PE   3: Inferred from homology;
KW   DNA-binding; Host nucleus; Hydrolase; Reference proteome;
KW   Viral genome packaging; Viral release from host cell.
FT   CHAIN           1..506
FT                   /note="Tripartite terminase subunit 3"
FT                   /id="PRO_0000406822"
FT   ACT_SITE        128
FT                   /note="For ATPase activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04013"
FT   ACT_SITE        282
FT                   /note="For nuclease activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04013"
FT   ACT_SITE        354
FT                   /note="For nuclease activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04013"
FT   ACT_SITE        475
FT                   /note="For nuclease activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04013"
SQ   SEQUENCE   506 AA;  55025 MW;  BA61F84AA5952557 CRC64;
     MHRSDSTMWL KYGLSPPTRS PNAALCAAAA TKCASMTRPS CVLDSLTLYS PAWPCLCRYA
     IFPCRAWAIY VRAGNFILTK FSRFSFCFCV WSPRPPIAAA ANHPATSTIV ARSQGLRGQD
     FNFLFVDEAN FIKPGAMHTI MGFLNQTNCK LFFVSSTNTG QSSTSLLYNL KGSSNSLLNV
     VTYICDDHLP EVQQRQNVTT CSCYVLQKPV YVTMDHSVRN TAELFVKDSF MNEIAGGQVG
     NTLSARSVIA SRAMDQFLVY RPSTSNSPNV HNLSRVLTAY IDPAFTANRS ASGTGIALVT
     ELNGATVLLG MEHFYLEALT GEAAAEIAQC ANLCVAYTCL LHPGVFREVR VAVEGNSSQD
     SATAIALRLA DLLAPLQKRL GFSLVFAHTR QHGSSVAHPF YLLNKQKSRA FDLFISRFNS
     GNIMASQELV SNTVLLGNDP CEYLVEQIKN LEIVITSGDA NRVYSGKQGG KLADDVLVAV
     VMAAYLSFEG APPAGYHTVS GAVCRR