糹散毛

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又稱菌毛.用電鏡觀察某些革蘭氏陰性菌及個別革蘭氏陽性菌的菌體表面，顯現出有比鞭毛細、短、直、硬、數量較多的細絲.直徑７—１０微米（μｍ），長０２—２０μｍ，每個M細菌約有１０—５００根.由蛋白質組成，不具運動功能.腸道桿菌的糹散毛有普通糹散毛和性糹散毛兩種.具普通糹散毛的細菌能藉助糹散毛粘附在多種細胞上，包括人和動物的紅細胞和消化道、呼吸道、泌尿道的上皮細胞等.由此獲得立足點，進而侵入黏膜，致使機體感染致病.糹散毛也可使許多細菌結合在一起形成菌膜.性糹散毛的長度介於普通糹散毛和鞭毛之間，是由含Ｆ因子的供體菌的Ｆ因子基因編碼產生的一種蛋白質突起，出現於細胞表面，有促進供體菌與受體菌接合的功能，其頂端接觸於受體菌表面，形成接合橋，供體菌藉此直接將遺傳物質傳遞給受體菌.相 關 詞 條:相 關 詞 條:相 關 詞 條:GOOGLE英文翻譯:Also known as pili. Using electron microscopy and individuals in certain Gram-negative bacteria Gram-positive bacteria of the bacterial surface, appear to have more than flagella fine, short, straight, hard, a larger number of filaments. Diameter of 7 -10 microns (μm), length 02-20μm, about 10-500 bacteria per M roots. by protein composition, non-motor function. enteric bacilli are common Si Si loose hair loose hair and loose hair of Si two kinds. with average Si bacteria loose hair loose hair with Si adhesion in a variety of cells, including human and animal red blood cells and the digestive tract, respiratory tract, urinary tract epithelial cells and so on. Thus to get a foothold, and then penetrated mucosa, resulting in infection of the body. Si loose hair can also combine a number of bacteria to form biofilm. of Si between the length of the loose hair loose ordinary Si between Mao and flagella is determined by F factor-containing donor strains F factor gene encoding a protein produced by processes, appeared in the cell surface, the donor bacteria can promote bonding with the receptor function of bacteria and its receptor in bacteria on the surface of the top contact to form a conjugation bridge, the donor bacteria to a direct genetic mass transfer to the receptor strain. Related term: Related term: Related term: