6X8M

CryoEM structure of the holo-SrpI encapsulin complex from Synechococcus elongatus PCC 7942


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AF_UNCLASSIFIEDe6x8mA1 A: a+b three layersX: Thioredoxin-likeH: Major capsid protein gp5 (From Topology)T: Major capsid protein gp5F: F_UNCLASSIFIEDECOD (1.6)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF19307Type 2A encapsulin shell protein SrpI-like (SrpI-like)Type 2A encapsulin shell protein SrpI-likeThis 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].
Domain