TCDB is operated by the Saier Lab Bioinformatics Group
« See all members of the family


1.B.7.1.3
PorI (OpmA) porin.  Forms channels that allow the passive diffusion of small hydrophilic solutes up to an exclusion limit of about 600 Da.  The 3-d structure is known (PDB ID 1PRN).

Accession Number:P39767
Protein Name:PorI aka OPMA
Length:289
Molecular Weight:30597.00
Species:Rhodopseudomonas blastica [1075]
Location1 / Topology2 / Orientation3: Cell outer membrane1 / Multi-pass membrane protein2
Substrate small molecules

Cross database links:

Drugbank: Drugbank Link   

Gene Ontology

GO:0009279 C:cell outer membrane
GO:0005886 C:plasma membrane
GO:0046930 C:pore complex
GO:0005215 F:transporter activity
GO:0006811 P:ion transport

References (3)

[1] “Structure of the membrane channel porin from Rhodopseudomonas blastica at 2.0-A resolution.”  Kreusch A.et.al.   8142898
[2] “Refined structure of the porin from Rhodopseudomonas blastica. Comparison with the porin from Rhodobacter capsulatus.”  Kreusch A.et.al.   7525973
[3] “Porin mutants with new channel properties.”  Schmid B.et.al.   9684893
Structure:
1BH3   1H6S   1PRN   2PRN   3PRN   5PRN   6PRN   7PRN   8PRN      [...more]

External Searches:

  • Search: DB with
  • BLAST ExPASy (Swiss Institute of Bioinformatics (SIB) BLAST)
  • CDD Search (Conserved Domain Database)
  • Search COGs (Clusters of Orthologous Groups of proteins)
  • 2° Structure (Network Protein Sequence Analysis)

Analyze:

Predict TMSs (Predict number of transmembrane segments)
Window Size: Angle:  
Window Size: Angle:  
FASTA formatted sequence
1:	EISLNGYGRF GLQYVEDRGV GLEDTIISSR LRINIVGTTE TDQGVTFGAK LRMQWDDGDA 
61:	FAGTAGNAAQ FWTSYNGVTV SVGNVDTAFD SVALTYDSEM GYEASSFGDA QSSFFAYNSK 
121:	YDASGALDNY NGIAVTYSIS GVNLYLSYVD PDQTVDSSLV TEEFGIAADW SNDMISLAAA 
181:	YTTDAGGIVD NDIAFVGAAY KFNDAGTVGL NWYDNGLSTA GDQVTLYGNY AFGATTVRAY 
241:	VSDIDRAGAD TAYGIGADYQ FAEGVKVSGS VQSGFANETV ADVGVRFDF