| ORF ID | 						TF00320 (frame 1) | 
			Gene ID | 					BQ12470 | 	
		| Position and sequences | 		1463341...1463961(206 aa) | 
			Gene Name/synonym | 			
			trwN
			/virB1		 | 
	
	| Organism | 					 Bartonella quintana Toulouse  | 
			Cluster | 					
			20 genes  | 
	
		| Product | 					Type IV secretion system protein VirB1 homolog | 
		| 1stcategory | 		P-T4SS | 
			2ndcategory | 		VirB1 Family | 
		| 3rdcategory | 		Probable effector translocator | 
		| Function | 					Component of the Trw Bartonela T4S system that may be required for invasion of the erythrocytes in the mammalian host.  | 
		| Miscellaneus | 				Trw system may have been recently acquired to one of the Bartonella lineages by horizontal gene transfer, followed by a functional switch from plasmid conjugation to host association.
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				| References | 					
					
					
						PubMed:18065487 
					
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