Protein Family Models

Terminase enzymes mediate the packaging viral DNA into an empty procapsid in a process called DNA packaging and are composed of a heterotrimeric complex of a large subunit (TerL, gpA) and the small subunit (TerS, gpNu1) (TerL-TerS2). TerL contains all the catalytic activities required for for DNA maturation and packaging. At the N-terminal reside the DNA translocase (packaging) and ATPase activities, while at the C-terminal resides the DNA maturation (nuclease/helicase) catalytic activity [1,2,3]. This entry represents the endonuclease domain found at the C-terminal of Terminase large subunit (GpA) from Bacteriophage lambda, which excises an individual genome from the concatemer at the cos site [1,2,3,4]. [1]. 30541105. Evidence that a catalytic glutamate and an 'Arginine Toggle' act. in concert to mediate ATP hydrolysis and mechanochemical. coupling in a viral DNA packaging motor.. Ortiz D, delToro D, Ordyan M, Pajak J, Sippy J, Catala A, Oh CS,. Vu A, Arya G, Feiss M, Smith DE, Catalano CE;. Nucleic Acids Res. 2019;47:1404-1415.. [2]. 23134123. The enzymology of a viral genome packaging motor is influenced. by the assembly state of the motor subunits.. Andrews BT, Catalano CE;. Biochemistry. 2012;51:9342-9353.. [3]. 17870092. The DNA maturation domain of gpA, the DNA packaging motor. protein of bacteriophage lambda, contains an ATPase site. associated with endonuclease activity.. Ortega ME, Gaussier H, Catalano CE;. J Mol Biol. 2007;373:851-865.. [4]. 27139643. Walker-A Motif Acts to Coordinate ATP Hydrolysis with Motor. Output in Viral DNA Packaging.. delToro D, Ortiz D, Ordyan M, Sippy J, Oh CS, Keller N, Feiss M,. Cat. TRUNCATED at 1650 bytes (from Pfam)

Date:

2024-08-14

This family consists of several phage terminase large subunit proteins as well as related sequences from several bacterial species. The DNA packaging enzyme of bacteriophage lambda, terminase, is a heteromultimer composed of a small subunit, gpNu1, and a large subunit, TerL (gpA), products of the Nu1 and A genes, respectively. Terminase is involved in the site-specific binding and cutting of the DNA during the DNA packaging process. TerL contains all the catalytic activities required for for DNA maturation and packaging. At the N-terminal (represented in this entry) reside the DNA translocase (packaging) and ATPase activities, while at the C-terminal resides the DNA maturation (nuclease/helicase) catalytic activity [1,2,3,4]. [1]. 11866517. The large subunit of bacteriophage lambda's terminase plays a. role in DNA translocation and packaging termination.. Duffy C, Feiss M;. J Mol Biol 2002;316:547-561.. [2]. 23134123. The enzymology of a viral genome packaging motor is influenced. by the assembly state of the motor subunits.. Andrews BT, Catalano CE;. Biochemistry. 2012;51:9342-9353.. [3]. 30541105. Evidence that a catalytic glutamate and an 'Arginine Toggle' act. in concert to mediate ATP hydrolysis and mechanochemical. coupling in a viral DNA packaging motor.. Ortiz D, delToro D, Ordyan M, Pajak J, Sippy J, Catala A, Oh CS,. Vu A, Arya G, Feiss M, Smith DE, Catalano CE;. Nucleic Acids Res. 2019;47:1404-1415.. [4]. 17870092. The DNA maturation domain of gpA, the DNA packaging motor. protein of bacteriophage lambda, contains an ATPase site. associated with endonuclease activity.. Ortega ME, Gaussier H, Catalano CE;. J Mol . TRUNCATED at 1650 bytes (from Pfam)

Date:

2024-08-14

phage terminase large subunit family protein similar to Escherichia virus Lambda large terminase protein GpA, which is a component of the terminase that processes and encapsidates viral genomes during virion assembly

Date:

2017-12-04