1NQH

OUTER MEMBRANE COBALAMIN TRANSPORTER (BTUB) FROM E. COLI, WITH BOUND CALCIUM AND CYANOCOBALAMIN (VITAMIN B12) SUBSTRATE

Functional Information from GO Data

Chain	GOid	namespace	contents
A	0005509	molecular_function	calcium ion binding
A	0005515	molecular_function	protein binding
A	0006811	biological_process	monoatomic ion transport
A	0009279	cellular_component	cell outer membrane
A	0015288	molecular_function	porin activity
A	0015420	molecular_function	ABC-type vitamin B12 transporter activity
A	0015889	biological_process	cobalamin transport
A	0016020	cellular_component	membrane
A	0019904	molecular_function	protein domain specific binding
A	0034220	biological_process	monoatomic ion transmembrane transport
A	0035461	biological_process	vitamin transmembrane transport
A	0046872	molecular_function	metal ion binding
A	0046930	cellular_component	pore complex
A	0090482	molecular_function	vitamin transmembrane transporter activity
A	1902495	cellular_component	transmembrane transporter complex

Functional Information from PDB Data

site_id	AC1
Number of Residues	5
Details	BINDING SITE FOR RESIDUE CA A 595

Chain	Residue
A	ASP179
A	GLN191
A	ASP193
A	ASP195
A	ASP230

---

site_id	AC2
Number of Residues	5
Details	BINDING SITE FOR RESIDUE CA A 596

Chain	Residue
A	ASP241
A	ASP193
A	ASP195
A	TYR229
A	ASP230

---

site_id	AC3
Number of Residues	2
Details	BINDING SITE FOR RESIDUE CA A 597

Chain	Residue
A	GLU378
A	GLU381

---

site_id	AC4
Number of Residues	1
Details	BINDING SITE FOR RESIDUE CA A 598

Chain	Residue
A	ASP411

---

site_id	AC5
Number of Residues	17
Details	BINDING SITE FOR RESIDUE CNC A 701

Chain	Residue
A	ASN57
A	GLN62
A	LEU63
A	SER65
A	ASN72
A	ALA88
A	GLY89
A	VAL90
A	SER91
A	ASN185
A	TYR229
A	ALA231
A	ASN276
A	THR289
A	ARG497
A	TYR531
A	TYR579

---

site_id	AC6
Number of Residues	11
Details	BINDING SITE FOR RESIDUE C8E A 800

Chain	Residue
A	ARG358
A	SER359
A	ARG367
A	GLY369
A	THR370
A	PHE470
A	ASP471
A	THR472
A	GLY473
A	C8E802
A	C8E805

---

site_id	AC7
Number of Residues	7
Details	BINDING SITE FOR RESIDUE C8E A 801

Chain	Residue
A	TRP317
A	THR338
A	ASP361
A	SER363
A	TYR383
A	PHE422
A	TRP431

---

site_id	AC8
Number of Residues	11
Details	BINDING SITE FOR RESIDUE C8E A 802

Chain	Residue
A	ILE261
A	ASN302
A	VAL304
A	ALA313
A	GLY314
A	LEU342
A	ILE433
A	ALA466
A	TYR481
A	C8E800
A	C8E804

---

site_id	AC9
Number of Residues	9
Details	BINDING SITE FOR RESIDUE C8E A 803

Chain	Residue
A	ILE311
A	LEU342
A	GLY344
A	LEU345
A	GLN346
A	PHE353
A	GLY355
A	ALA356
A	THR373

---

site_id	BC1
Number of Residues	8
Details	BINDING SITE FOR RESIDUE C8E A 804

Chain	Residue
A	TRP214
A	ILE261
A	SER263
A	TYR436
A	LYS462
A	GLY463
A	VAL464
A	C8E802

---

site_id	BC2
Number of Residues	3
Details	BINDING SITE FOR RESIDUE C8E A 805

Chain	Residue
A	TRP371
A	TYR505
A	C8E800

---

Functional Information from PROSITE/UniProt

site_id	PS01156
Number of Residues	18
Details	TONB_DEPENDENT_REC_2 TonB-dependent receptor (TBDR) proteins signature 2. YgyqTaGReYtLSGsYtF

Chain	Residue	Details
A	TYR577-PHE594

---

Functional Information from SwissProt/UniProt

site_id	SWS_FT_FI1
Number of Residues	278
Details	Transmembrane: {"description":"Beta stranded"}

Chain

Residue

Details

---

site_id	SWS_FT_FI2
Number of Residues	92
Details	Topological domain: {"description":"Extracellular","evidences":[{"source":"PubMed","id":"12652322","evidenceCode":"ECO:0000269"}]}

Chain

Residue

Details

---

site_id	SWS_FT_FI3
Number of Residues	32
Details	Topological domain: {"description":"Periplasmic","evidences":[{"source":"PubMed","id":"12652322","evidenceCode":"ECO:0000269"}]}

Chain

Residue

Details

---

site_id	SWS_FT_FI4
Number of Residues	114
Details	Domain: {"description":"TBDR plug","evidences":[{"source":"PROSITE-ProRule","id":"PRU01360","evidenceCode":"ECO:0000255"}]}

Chain

Residue

Details

---

site_id	SWS_FT_FI5
Number of Residues	7
Details	Motif: {"description":"TonB box"}

Chain

Residue

Details

---

site_id	SWS_FT_FI6
Number of Residues	17
Details	Motif: {"description":"TonB C-terminal box"}

Chain

Residue

Details

---

site_id	SWS_FT_FI7
Number of Residues	8
Details	Binding site: {"evidences":[{"source":"PubMed","id":"12652322","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1NQH","evidenceCode":"ECO:0007744"}]}

Chain

Residue

Details

---

site_id	SWS_FT_FI8
Number of Residues	7
Details	Binding site: {"evidences":[{"source":"PubMed","id":"12652322","evidenceCode":"ECO:0000269"}]}

Chain

Residue

Details

---