This entry includes type 2A encapsulin shell protein SrpI from Synechococcus elongatus and its homologues from Mycobacteria, such as [Swissprot:P46841] from Mycobacterium leprae, which forms a large 950 kDa complex with itself [1]. It has been descri ...
This entry includes type 2A encapsulin shell protein SrpI from Synechococcus elongatus and its homologues from Mycobacteria, such as [Swissprot:P46841] from Mycobacterium leprae, which forms a large 950 kDa complex with itself [1]. It has been described as the most antigenic protein in human leprosy patients, being useful for serodiagnosis of leprosy [1-3]. Some members of this family contain an N-terminal cyclic nucleotide binding domain Pfam:PF00027. This family includes proteins annotated as phage capsid proteins, such as UniProt:A0A1X9IAH4 suggesting that in bacteria this protein is a co-opted phage protein. There is a clear evolutionary relationship between the bacterial encapsulins and Caudovirales bacteriophages as they share the HK97 fold of the capsid proteins [2].
