| Accession | TIGR01540 |
| Name | portal_PBSX |
| Function | phage portal protein, PBSX family |
| Trusted Cutoff | 166.05 |
| Domain Trusted Cutoff | 166.05 |
| Noise Cutoff | 102.35 |
| Domain Noise Cutoff | 102.35 |
| Isology Type | equivalog |
| HMM Length | 320 |
| Mainrole Category | Mobile and extrachromosomal element functions |
| Subrole Category | Prophage functions |
| Author | Haft DH, Fouts DE |
| Entry Date | Jun 10 2002 11:19AM |
| Last Modified | Feb 14 2011 3:27PM |
| Comment | This 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.
This family shows clear homology to TIGR01537. The alignment for this group was trimmed of poorly alignable N-terminal sequence of about 50 residues and of C-terminal regions present in some but not all members of up 180 residues. |
| References | RN [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 |
| Genome Property | GenProp0208: phage: major features (HMM) |
