adaptor
A protein complex associated with coated vesicles. Adaptors have been shown to promote the in vitro assembly of clathrin cages and to bind to the cytoplasmic domains of specific membrane proteins. It has been proposed that adaptors link selected membrane proteins to clathrin causing them to be packaged into a coated vesicle. Two adaptors have been identified (HA-1 and HA-2) ; they are hetero-tetramers composed of two proteins of 100-110 kD, termed adaptins, and two smaller polypeptides of around 50 and 20 kD. The HA-1 subunits are g -adaptin, b \'-adaptin with polypeptides of 50 kD and 17 kD. HA-1 is associated with coated pits formed from the Golgi complex. The HA-2 subunits are a -adaptin, b -adaptin with polypeptides of 47 kD and 20 kD. HA-2 is associated with coated pits formed from the plasma membrane. ( b &’- and b -adaptin are closely related).

Dictionary of molecular biology. 2004.

Look at other dictionaries:

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  • adaptor — (also adapter) ► NOUN 1) a device for connecting pieces of equipment. 2) Brit. a device for connecting more than one plug at a time or plugs of a non standard type to an electrical socket …   English terms dictionary

  • adaptor — [[t]ədæ̱ptə(r)[/t]] adaptors also adapter 1) N COUNT An adaptor is a special device for connecting electrical equipment to a power supply, or for connecting different pieces of electrical or electronic equipment together. 2) N COUNT The adaptor… …   English dictionary

  • adaptor — adapter UK [əˈdæptə(r)] / US [əˈdæptər] or adaptor UK / US noun [countable] Word forms adapter : singular adapter plural adapters an object that allows you to connect two pieces of equipment of different types or sizes a) British an object that… …   English dictionary

  • adaptor — adapteris statusas T sritis informatika apibrėžtis ↑Aparatinės sąsajos įtaisas siejamų įtaisų signalų parametrams suderinti. Dažniausiai naudojamas išoriniams įtaisams, pavyzdžiui, kompaktinių diskų įtaisui, ↑monitoriui, ↑vairasvirtei prijungti… …   Enciklopedinis kompiuterijos žodynas

  • adaptor — noun see adapter …   New Collegiate Dictionary

  • adaptor — a·dap·tor (ə dăpʹtər) n. Variant of adapter. * * * …   Universalium

  • adaptór — s. n., pl. adaptoáre …   Romanian orthography

  • adaptör — is., Fr. adapteur 1) Bir aletin çapları birbirinden farklı olan parçalarından birini ötekine geçirebilmek için yararlanılan bağlayıcı 2) Aygıtın kullanabileceği düzeye göre elektrik akımını ayarlayan alet, uyarlayıcı …   Çağatay Osmanlı Sözlük

  • adaptor — a dap·tor || tÉ™ n. one who adapts; device which connects parts of different size or design; accessory which converts a machine or tool to a new or modified use …   English contemporary dictionary

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