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4.A.3.2.5
The N,N' -diacetylchitobiose Enzyme II (Toratani et al., 2008) (>80% identical to the E. coli enzyme (4.A.3.2.1)).  The IIA protein is the Serratia glucose IIA which is nearly identical to the E. coli IIAGlc (Crr).

Accession Number:Q8L3C3
Protein Name:ChbB
Length:105
Molecular Weight:11284.00
Species:Serratia marcescens GN=chbB PE=4 SV=1 [615]
Location1 / Topology2 / Orientation3: Nucleus1
Substrate N,N' -diacetylchitobiose

Cross database links:

Pfam: PF02302   

Gene Ontology

GO:0008982 F:protein-N(PI)-phosphohistidine-sugar phosph...
GO:0005529 F:sugar binding
GO:0009401 P:phosphoenolpyruvate-dependent sugar phospho...

References (1)

[1] “Uptake of N,N'-diacetylchitobiose [(GlcNAc)2] via the phosphotransferase system is essential for chitinase production by Serratia marcescens 2170.”  Uchiyama T.et.al.   12618440

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FASTA formatted sequence
1:	MEKKKIYLFC SAGMSTSLLV SKMKAQAEKY EVPVIIAAYP EALAAEKGVE ADLILLGPQI 
61:	AYTLPEVQKQ LPNKPVEVID PLLYGKVDGL GVLKAAVAAI KKANQ