Cross Index Pectinatus
SuperSet Prokaryote, Eubacteria Gram-Negative, Anaerobic, Straight, Curved, and Helical Bacteria
Compare Acetivibrio Acetoanaerobium noterate , Acetofilamentum rigidum, Acetogenium kivui, Acetomicrobium, Acetothermus paucivorans,, Acidaminobacter hydrogenoformans, Anaerbioospirillum succiniciproducens, , Anaerorhabdus furcosus ,Anaerovibrio, Bacteroides, Butyrivibrio, Centipeda periodontii, Fervidobacterium, Fibrobacter, Fusobacterium Haloanaerobium praevalens, Halobacteroides halobius, Ilyobacter, Lachnospira multparus Leptotrichia buccalis, Malaonomonas rubra, Megamonas hypermega, Mitsuokella, Oxalobacter formigenes, Pectinatus, Pelobacter Porphyromonas, Provotella, Propionigenium modestum, Propionispira arboria, Rikenella microfusus, Roseburia ceciola, Ruminobacter amylophilus, Sebaldella termitidis, Selenomonas, Sporomusa, Succinimonas amylolytica, Succinivibrio dextrinosolvens, Syntrophobacter wolinii, Syntrophomonas, Thermobacteroides, Thermosipho africanus, Thermotoga, Tissierella praeacuta, Wolinella, Zymophilus
Contrast Archaea


Morphology Pectinatus
Staining Gram-negative
Morphology Slightly curved rods, 0.7-0.8 um in diameter and 2.0-32 um or more in length, with rounded ends; they occur singly, in pairs, and only rarely in short chains. Shorter, younger cells do not show a helical shape, but the elongated older cells tend to form helices. After cultures have passed the stationary and declining phases, round cell forms are often observed
Motility Young cells move very actively, giving the appearance of an "X" shape as they swim. Older and longer cells have a snakelike motion as they move. Flagella emanate from only one side of a cell. Flagella are not limited to the center portion of the concave side of the cell as they are in the genus Selenomonas. The number of flagella per cell depends upon the cell size and its condition, but generally ranges from 1 to 23 or more.
Specialized structures nonsporeforming
Solid surface  


Growth Parameters Pectinatus
Oxygen obligately anaerobic
Temperature mesophiles. They grow between 15 and 40`C, with optimum growth at about 32`C.
Unique features  
Habitat Originally isolated from spoiled, packaged beer.


Genome Pectinatus
G+C Mol % 39.8 (Tm)


Reference Pectinatus
First citation Lee,S.Y., M.S. Mabee and N.O. Jangaard. 1978. Pectinatus, a new genus of the family Bacteroidaceae IJSB 28:582-594
The Prokaryotes p
Bergey's Systematatic p 655 S.Y. Lee
Bergey's Determinative p 299