2J9I

Lengsin is a survivor of an ancient family of class I glutamine synthetases in eukaryotes that has undergone evolutionary re- engineering for a tissue-specific role in the vertebrate eye lens.

External Resource: Annotation

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

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF03951	e2j9iA4	A: beta barrels	X: Ribosomal protein L25-like	H: Glutamine synthetase, N-terminal domain (From Topology)	T: Glutamine synthetase, N-terminal domain	F: PF03951	ECOD (1.6)
A	PF00120	e2j9iA3	A: a+b two layers	X: Glutamine synthetase-like	H: Glutamine synthetase/guanido kinase (From Topology)	T: Glutamine synthetase/guanido kinase	F: PF00120	ECOD (1.6)
B	PF03951	e2j9iB2	A: beta barrels	X: Ribosomal protein L25-like	H: Glutamine synthetase, N-terminal domain (From Topology)	T: Glutamine synthetase, N-terminal domain	F: PF03951	ECOD (1.6)
B	PF00120	e2j9iB1	A: a+b two layers	X: Glutamine synthetase-like	H: Glutamine synthetase/guanido kinase (From Topology)	T: Glutamine synthetase/guanido kinase	F: PF00120	ECOD (1.6)
C	PF03951	e2j9iC2	A: beta barrels	X: Ribosomal protein L25-like	H: Glutamine synthetase, N-terminal domain (From Topology)	T: Glutamine synthetase, N-terminal domain	F: PF03951	ECOD (1.6)
C	PF00120	e2j9iC1	A: a+b two layers	X: Glutamine synthetase-like	H: Glutamine synthetase/guanido kinase (From Topology)	T: Glutamine synthetase/guanido kinase	F: PF00120	ECOD (1.6)
D	PF03951	e2j9iD2	A: beta barrels	X: Ribosomal protein L25-like	H: Glutamine synthetase, N-terminal domain (From Topology)	T: Glutamine synthetase, N-terminal domain	F: PF03951	ECOD (1.6)
D	PF00120	e2j9iD1	A: a+b two layers	X: Glutamine synthetase-like	H: Glutamine synthetase/guanido kinase (From Topology)	T: Glutamine synthetase/guanido kinase	F: PF00120	ECOD (1.6)
E	PF03951	e2j9iE2	A: beta barrels	X: Ribosomal protein L25-like	H: Glutamine synthetase, N-terminal domain (From Topology)	T: Glutamine synthetase, N-terminal domain	F: PF03951	ECOD (1.6)
E	PF00120	e2j9iE1	A: a+b two layers	X: Glutamine synthetase-like	H: Glutamine synthetase/guanido kinase (From Topology)	T: Glutamine synthetase/guanido kinase	F: PF00120	ECOD (1.6)
F	PF03951	e2j9iF2	A: beta barrels	X: Ribosomal protein L25-like	H: Glutamine synthetase, N-terminal domain (From Topology)	T: Glutamine synthetase, N-terminal domain	F: PF03951	ECOD (1.6)
F	PF00120	e2j9iF1	A: a+b two layers	X: Glutamine synthetase-like	H: Glutamine synthetase/guanido kinase (From Topology)	T: Glutamine synthetase/guanido kinase	F: PF00120	ECOD (1.6)
G	PF03951	e2j9iG2	A: beta barrels	X: Ribosomal protein L25-like	H: Glutamine synthetase, N-terminal domain (From Topology)	T: Glutamine synthetase, N-terminal domain	F: PF03951	ECOD (1.6)
G	PF00120	e2j9iG1	A: a+b two layers	X: Glutamine synthetase-like	H: Glutamine synthetase/guanido kinase (From Topology)	T: Glutamine synthetase/guanido kinase	F: PF00120	ECOD (1.6)
H	PF03951	e2j9iH2	A: beta barrels	X: Ribosomal protein L25-like	H: Glutamine synthetase, N-terminal domain (From Topology)	T: Glutamine synthetase, N-terminal domain	F: PF03951	ECOD (1.6)
H	PF00120	e2j9iH1	A: a+b two layers	X: Glutamine synthetase-like	H: Glutamine synthetase/guanido kinase (From Topology)	T: Glutamine synthetase/guanido kinase	F: PF00120	ECOD (1.6)
I	PF03951	e2j9iI2	A: beta barrels	X: Ribosomal protein L25-like	H: Glutamine synthetase, N-terminal domain (From Topology)	T: Glutamine synthetase, N-terminal domain	F: PF03951	ECOD (1.6)
I	PF00120	e2j9iI1	A: a+b two layers	X: Glutamine synthetase-like	H: Glutamine synthetase/guanido kinase (From Topology)	T: Glutamine synthetase/guanido kinase	F: PF00120	ECOD (1.6)
J	PF03951	e2j9iJ2	A: beta barrels	X: Ribosomal protein L25-like	H: Glutamine synthetase, N-terminal domain (From Topology)	T: Glutamine synthetase, N-terminal domain	F: PF03951	ECOD (1.6)
J	PF00120	e2j9iJ1	A: a+b two layers	X: Glutamine synthetase-like	H: Glutamine synthetase/guanido kinase (From Topology)	T: Glutamine synthetase/guanido kinase	F: PF00120	ECOD (1.6)
K	PF03951	e2j9iK2	A: beta barrels	X: Ribosomal protein L25-like	H: Glutamine synthetase, N-terminal domain (From Topology)	T: Glutamine synthetase, N-terminal domain	F: PF03951	ECOD (1.6)
K	PF00120	e2j9iK1	A: a+b two layers	X: Glutamine synthetase-like	H: Glutamine synthetase/guanido kinase (From Topology)	T: Glutamine synthetase/guanido kinase	F: PF00120	ECOD (1.6)
L	PF03951	e2j9iL2	A: beta barrels	X: Ribosomal protein L25-like	H: Glutamine synthetase, N-terminal domain (From Topology)	T: Glutamine synthetase, N-terminal domain	F: PF03951	ECOD (1.6)
L	PF00120	e2j9iL1	A: a+b two layers	X: Glutamine synthetase-like	H: Glutamine synthetase/guanido kinase (From Topology)	T: Glutamine synthetase/guanido kinase	F: PF00120	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	PF00120	Glutamine synthetase, catalytic domain (Gln-synt_C)	Glutamine synthetase, catalytic domain	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	GLUTAMATE-AMMONIA LIGASE DOMAIN-CONTAINING PROTEIN 1	catalytic activity	-	cell periphery plasma membrane membrane cellular anatomical entity intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	IPR008146	Glutamine synthetase, catalytic domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	IPR014746	Glutamine synthetase/guanido kinase, catalytic domain	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	IPR008147	Glutamine synthetase, N-terminal domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L	IPR036651	Glutamine synthetase, N-terminal domain superfamily	Homologous Superfamily

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.

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2J9I

Lengsin is a survivor of an ancient family of class I glutamine synthetases in eukaryotes that has undergone evolutionary re- engineering for a tissue-specific role in the vertebrate eye lens.

External Resource: Annotation

Domain Annotation: ECOD Classification ECOD Database Homepage

Protein Family Annotation Pfam Database Homepage

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

InterPro: Protein Family Classification InterPro Database Homepage