Protein Family Models

Bacteriophage portal proteins form a dodecamer and is located at a five-fold vertex of the viral capsid. The portal complex forms a channel through which the viral DNA is packaged into the capsid, and exits during infection. The portal protein is though to rotate during DNA packaging [1]. Portal proteins from different phage show little sequence homology, so this family does not represent all portal proteins. [1]. 11839289. DNA packaging: a new class of molecular motors. Moore SD, Prevelige PE Jr;. Curr Biol 2002;12:96-98. (from Pfam)

Date:

2024-10-16

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.

Date:

2021-05-12

phage portal protein forms a hole, or portal, that enables DNA passage during packaging and ejection; also forms the junction between the phage head (capsid) and the tail proteins; similar to Lomovskayavirus probable portal protein

Date:

2022-10-20