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• Protein Classification

• Types (3 types)
• Classes (11 classes)
• Superfamilies (393 superfamilies)
• Families (668 families)
• Species (539 species)
• Localization (24 types)
• All proteins in OPM (2185 proteins)

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3a7k » Halorhodopsin

• Type: 1. Transmembrane (3 classes)
• Class: 1.1. Alpha-helical polytopic (72 superfamilies)
• Superfamily: 1.1.01. Rhodopsin-like receptors and pumps (4 families) 3.E.1 (TCDB)
• Family: 1.1.01.01. Microbial and algal rhodopsins (20 proteins) 3.E.1 (TCDB)
• Species: Natronomonas pharaonis (3 proteins)
• Localization: Archaebacterial membrane (56 proteins)

3a7k » Halorhodopsin
Hydrophobic Thickness	33.8 ± 1.4 Å
Tilt Angle	1 ± 0°
ΔGtransfer	-141.3 kcal/mol
Links to 3a7k	PDB Sum, PDB, SCOP, MSD, OCA, MMDB
Topology	subunit A (N-terminus extracellular)
Resolution	2.00 Å
Other PDB entries representing this structure	3abw, 3qbg, 3qbi, 3qbk, 3qbl
Number of TM Secondary Structures	21

3 transmembrane subunits
A - Tilt: 10° - Segments: 1(32-55), 2(68-87), 3(121-138), 4(150-168), 5(173-195), 6(213-231), 7(241-264)
B - Tilt: 10° - Segments: 1(32-55), 2(68-87), 3(121-138), 4(150-168), 5(173-195), 6(213-231), 7(241-264)
D - Tilt: 9° - Segments: 1(32-55), 2(68-87), 3(121-138), 4(150-168), 5(173-195), 6(214-231), 7(241-264)

Copyright © 2005-2013 Andrei Lomize, Mikhail Lomize and Irina Pogozheva
University of Michigan, Ann Arbor, MI 48109 USA