Cortical fragment-lytic enzyme (CFLE) is a peptidoglycan hydrolase involved in bacterial endospore germination. CFLE is expressed as an inactive preprotein (called SleB) in the forespore compartment of sporulating cells. SleB translocates across the forespore inner membrane and is deposited as a mature enzyme in the cortex layer of the spore. As part of a sensory mechanism capable of initiating germination, CFLE degrades a spore-specific peptidoglycan constituent called muramic-acid delta-lactam that comprises the outer cortex. CFLE has a C-terminal glycosyl hydrolase family 18 (GH18) catalytic domain as well as two N-terminal LysM peptidoglycan-binding domains. In addition to SleB, this family includes YaaH, YdhD, and YvbX from Bacillus subtilis.

NEAT domain-containing leucine-rich repeat protein. Members of this family have an N-terminal NEAT (near transporter) domain often associated with iron transport, followed by a leucine-rich repeat region with significant sequence similarity to the internalins of Listeria monocytogenes. However, since Bacillus cereus (from which this protein was described, in PMID:16978259) is not considered an intracellular pathogen, and the function may be iron transport rather than internalization, applying the name "internalin" to this family probably would be misleading.

Spore germination protein YaaH [Cell cycle control, cell division, chromosome partitioning].

GH18 domain of an uncharacterized family of bacterial proteins, which share a common three-domain architecture: an N-terminal glycosyl hydrolase family 18 (GH18) domain, a glycosyl transferase family 2 domain, and a C-terminal polysaccharide deacetylase domain.

S-layer homology domain.

Structureof the SbsB S-layer protein of Geobacillus stearothermophilus PV72p2 in complex with nanobody KB6 [Geobacillus stearothermophilus]

Structureof the SbsB S-layer protein of Geobacillus stearothermophilus PV72p2 in complex with nanobody KB6 [Geobacillus stearothermophilus]

Exoglucanase XynX OS=Acetivibrio thermocellus OX=1515 GN=xynX PE=3 SV=1

Amylopullulanase OS=Thermoanaerobacterium thermosulfurigenes OX=33950 GN=amyB PE=3 SV=2

S-layer protein OS=Bacillus licheniformis OX=1402 PE=3 SV=1

S-layer protein OS=Bacillus thuringiensis subsp. finitimus OX=29337 GN=ctc PE=1 SV=1

S-layer protein EA1 OS=Bacillus anthracis OX=1392 GN=eag PE=3 SV=1