HMM Summary Page: TIGR01537

Functionphage portal protein, HK97 family
Trusted Cutoff112.05
Domain Trusted Cutoff112.05
Noise Cutoff56.00
Domain Noise Cutoff56.00
Isology Typeequivalog
HMM Length343
Mainrole CategoryMobile and extrachromosomal element functions
Subrole CategoryProphage functions
Gene Ontology TermGO:0005198: structural molecule activity molecular_function
GO:0019012: virion cellular_component
GO:0019068: virion assembly biological_process
AuthorFouts DE, Haft DH
Entry DateJun 7 2002 3:49PM
Last ModifiedFeb 14 2011 3:27PM
CommentThis HMM represents one of several distantly related families of phage portal protein. This protein forms a hole, or portal, that enables DNA passage during packaging and ejection. It also forms the junction between the phage head (capsid) and the tail proteins. It functions as a dodecamer of a single polypeptide of average mol. wt. of 40-90 KDa.
ReferencesRN [1] RA Casjens S, Hendrix R RT Control Mechanisms in dsDNA Bacteriophage Assembly RL p. 15-91. In R. Calendar (ed.), The Bacteriophages. Plenum Press, New York and London, 1988 RN [2] RM 7723020 RT Genetic basis of bacteriophage HK97 prohead assembly. RA Duda RL, Martincic K, Hendrix RW. RL J Mol Biol 1995 Apr 7;247(4):636-47
Genome PropertyGenProp0208: phage: major features (HMM)