Powering down the Pfam website
On October 5th, we began redirecting traffic from Pfam (pfam.xfam.org) to InterPro (www.ebi.ac.uk/interpro). The Pfam website will remain available at pfam-legacy.xfam.org until January 2023, when it will be decommissioned. You can read more about the sunset period in our blog post.

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0  structures 1552  species 0  interactions 3152  sequences 20  architectures

Clan: TrbL (CL0698)


TrbL/VirB6 plasmid conjugal transfer protein Add an annotation

This clan contains the TrbL/VirB6 proteins which are part of the type IV secretion system.

This clan contains 3 families and the total number of domains in the clan is 3152. The clan was built by A Bateman.


This clan contains the following 3 member families:

TrbL TrbL_2 TrbL_3

Domain organisation

Below is a listing of the unique domain organisations or architectures from this clan. More...

Loading domain graphics...


The table below shows the number of occurrences of each domain throughout the sequence database. More...

Pfam family Num. domains Alignment
TrbL (PF04610) 2512 (79.7%) View
TrbL_2 (PF19478) 565 (17.9%) View
TrbL_3 (PF19590) 75 (2.4%) View
Total: 3 Total: 3152 Clan alignment

Please note: Clan alignments can be very large and can cause problems for some browsers. Read the note above before viewing.

Family relationships

This diagram shows the relationships between members of this clan. More...

Species distribution

Tree controls


This tree shows the occurrence of the domains in this clan across different species. More...