4M0D

Crystal structure of MurQ from H.influenzae in apo form

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	SIS domain/Ribosomal protein S2-like	8033568	3001397	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	SIS domain/Ribosomal protein S2-like	8033568	3001397	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	SIS domain/Ribosomal protein S2-like	8033568	3001397	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	SIS domain/Ribosomal protein S2-like	8033568	3001397	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	murQ_2nd,PRK12570	e4m0dA1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Ribosomal protein S2/SIS domain (From Topology)	T: Ribosomal protein S2/SIS domain	F: murQ_2nd,PRK12570	ECOD (1.6)
B	murQ_2nd,PRK12570	e4m0dB1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Ribosomal protein S2/SIS domain (From Topology)	T: Ribosomal protein S2/SIS domain	F: murQ_2nd,PRK12570	ECOD (1.6)
C	murQ_2nd,PRK12570	e4m0dC1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Ribosomal protein S2/SIS domain (From Topology)	T: Ribosomal protein S2/SIS domain	F: murQ_2nd,PRK12570	ECOD (1.6)
D	murQ_2nd,PRK12570	e4m0dD1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Ribosomal protein S2/SIS domain (From Topology)	T: Ribosomal protein S2/SIS domain	F: murQ_2nd,PRK12570	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.10490	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Glucose-6-phosphate isomerase like protein	CATH (4.3.0)
A	1.10.8.1080	Mainly Alpha	Orthogonal Bundle	Helicase, Ruva Protein	domain 3	CATH (4.3.0)
B	3.40.50.10490	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Glucose-6-phosphate isomerase like protein	CATH (4.3.0)
B	1.10.8.1080	Mainly Alpha	Orthogonal Bundle	Helicase, Ruva Protein	domain 3	CATH (4.3.0)
C	3.40.50.10490	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Glucose-6-phosphate isomerase like protein	CATH (4.3.0)
C	1.10.8.1080	Mainly Alpha	Orthogonal Bundle	Helicase, Ruva Protein	domain 3	CATH (4.3.0)
D	3.40.50.10490	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Glucose-6-phosphate isomerase like protein	CATH (4.3.0)
D	1.10.8.1080	Mainly Alpha	Orthogonal Bundle	Helicase, Ruva Protein	domain 3	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF01380	SIS domain (SIS)	SIS domain	SIS (Sugar ISomerase) domains are found in many phosphosugar isomerases and phosphosugar binding proteins. SIS domains are also found in proteins that regulate the expression of genes involved in synthesis of phosphosugars. Presumably the SIS domain ...	SIS (Sugar ISomerase) domains are found in many phosphosugar isomerases and phosphosugar binding proteins. SIS domains are also found in proteins that regulate the expression of genes involved in synthesis of phosphosugars. Presumably the SIS domains bind to the end-product of the pathway.	Domain
A, B, C, D	PF20741	C-terminal lid domain of glucokinase regulatory protein (GKRP-like_C)	C-terminal lid domain of glucokinase regulatory protein	This domain is found at the C terminus of Glucokinase regulatory protein (GKRP) from animals and N-acetylmuramic acid 6-phosphate etherase (MurQ) from bacteria. GKRP binds Glucokinase (GK) mainly through hydrophobic interactions, functioning as an al ...	This domain is found at the C terminus of Glucokinase regulatory protein (GKRP) from animals and N-acetylmuramic acid 6-phosphate etherase (MurQ) from bacteria. GKRP binds Glucokinase (GK) mainly through hydrophobic interactions, functioning as an allosteric switch in blood glucose control by the liver [1]. GKRP is trilobal in shape, consisting of two topologically identical sugar isomerase (SIS) domains (Pfam:PF01380 and Pfam:PF13580) capped by an alpha helical C-terminal domain (this entry). The Lid domain consists of a bundle of seven alpha helices with a core that shows a UBA-like fold [2]. MurQ, which also shows a SIS domain, plays a key role in the peptidoglycane recycling pathway. Its crystal structure shows each monomer have an alpha-beta-alpha sandwich fold commonly found in regulatory proteins controlling the expression of genes involved in the synthesis of phosphosugars. The C-terminal domain of this protein (this entry) is comprised of five alpha helices [4].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	N-acetylmuramic acid 6-phosphate etherase	lyase activity catalytic activity carbon-oxygen lyase activity ether hydrolase activity hydrolase activity, acting on ether bonds hydrolase activity binding carbohydrate derivative binding	catabolic process oxoacid metabolic process cellular metabolic process carboxylic acid metabolic process organic acid catabolic process organic acid metabolic process cellular catabolic process organic substance metabolic process carboxylic acid catabolic process N-acetylmuramic acid catabolic process small molecule metabolic process metabolic process cellular process N-acetylmuramic acid metabolic process catabolic process oxoacid metabolic process cellular metabolic process carboxylic acid metabolic process organic acid catabolic process organic acid metabolic process cellular catabolic process organic substance metabolic process carboxylic acid catabolic process N-acetylmuramic acid catabolic process small molecule metabolic process metabolic process cellular process N-acetylmuramic acid metabolic process small molecule catabolic process organic substance catabolic process carbohydrate derivative catabolic process amino sugar catabolic process amino sugar metabolic process carbohydrate derivative metabolic process carbohydrate metabolic process primary metabolic process 1,6-anhydro-N-acetyl-beta-muramic acid catabolic process 1,6-anhydro-N-acetyl-beta-muramic acid metabolic process monocarboxylic acid catabolic process monocarboxylic acid metabolic process organonitrogen compound metabolic process peptidoglycan turnover glycosaminoglycan metabolic process aminoglycan metabolic process peptidoglycan metabolic process macromolecule metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR046348	SIS domain superfamily	Homologous Superfamily
A, B, C, D	IPR005486	Glucokinase regulatory protein, conserved site	Conserved Site
A, B, C, D	IPR005488	N-acetylmuramic acid 6-phosphate etherase MurQ	Family
A, B, C, D	IPR040190	N-acetylmuramic acid 6-phosphate etherase/glucokinase regulatory protein	Family
A, B, C, D	IPR001347	SIS domain	Domain

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.