The following text describes a protein:
Function:
Neuronal cell adhesion protein involved in synapse formation, development of synaptic active zones, synaptic regulation and visual function. Plays a role in cell adhesion between the pre- and the postsynaptic cell. Required for proper proliferation of synaptic boutons during larval development, a process necessary for coordinated matching of pre-and postsynaptic compartments. Promotes presynaptic active zone formation and neurotransmitter release. Spn/Spinophilin fine-tunes nrx-1/nlg1 signaling at the pre-synapse to control active zone number and functionality and thereby optimizing action potential-induced exocytosis. Required for synapse formation in central nervous system. By regulating synapse formation, may play a role in larval associative learning. Together with RhoGAP100F/syd-1, controls synapse formation at the neuromuscular junction. Essential for synaptic vesicle cycling, which plays critical roles in neurotransmission at neuromuscular junctions (NMJ). Regulated and restricts formation of glutamate receptor clusters. Mediates retinoid transport and subsequent rhodopsin maturation and may regulate lipoprotein function; thereby playing a role in vision. Regulates sleep, circadian rhythm and synaptic plasticity. Together with CASK, required for locomotion.
Subcellular Localization:
Synaptic cell membrane. Presynaptic cell membrane. Postsynaptic cell membrane. Note=Localized to presynaptic active zone. Synapse localization does not depend on interaction with CASK. Present in both presynaptic nerve terminals and postsynaptic muscle.
Domain:
The intracellular region is required for chromophore generation and subsequent rhodopsin 1 maturation.
Sequence:
MKAPHSATYQDNYADAAMTARTRPSMDMDQQRNRNQAELRLLPAQRTSTSAFESPDLRFNKARRRRRSEQVPPVVVEYRRSYRVLIVSALLVSLAASFVTLSAGFQLDGSQNSFYTFRKWYTGLNGTLELEFKTEQPNGLVLYTDDGGTYDFFELKLVEGALRLRYNLGGGAQIITVGRELHDGHWHKVQVLRNDEQTSLIVDGVSQQRSTKGKEFQFGKFASNSDVYVGGMPNWYSSKLALLALPSVIFEPRFRGAIRNLVYADQPGGSTRRQEIKQQRDIKCGDVPCDHGELPARERPLRGVRGGNTTDACERNDPCQHGGICISTDSGPICECRNLEYDGQYCEKEKAPSEATFRGTQFLSYDLGQTGAEPIVSAQDAISFYFRTRQPNGLLFYTGHGTDYLNLALRDGGVSLTMGLANGKQEMHIKPSKVRFDDHQWHKVTVHRRIQEISSITSFCRLVTVVDDVYTDHSHIAGKFTMLSSSRVYVGGAVNPRALLGARVHTNFVGCLRKVEFSADTLNLNLIDLAKSGSKLIQVAGNLEYQCPSGDPQDPVTFTTRESHLVLPPWETGKQSSISFKFRTKEPNGIIVLATGSKQPRAKNPVLIAIELLNGHIYIHLDLGSGASKVRASRRRVDDGDWHDLILRRNGRDAKVSVDGVWNDFRTPGDGTILELDGHMYLGGVGPAYNSVSWPAAIWTATLRQGFVGCLRDLVLSGKAIDIAAFARVQDSASVKPSCHVQANVCNGNPCLNGGTCLEGWNRPICDCSATLYGGPTCGRELATLAFNGSQHMTIWLGNGQGTKTQTEELVIRFKTSRPAGLLLLTSAESNSPDRLEIALVAGRVRASVRLSDREKNLLAGQSVLNDNNWHTIRFSRRASNLRLQVDGAPPVRGMLSETILGRHSTMEIRSVHLGGLFHAEEEIQMTSTMPNFVGQMQGLVFNGQRYLDIVKSLGPELSALPSATFKLTARFVNSPAGQPYHAATFRSKHSYVGLAMLKAYNSISIDFRFKTVEPNGLLVFNGGRRNDFVAVELVNGHIHYTFDLGDGPVTMRDKSRIHMNDNRWHQVSIRRPGPKTHTLTVDDSFEIISLTGNNMHLELAGILYIGGVFKDMYSKLPASISSRSGFEGCLASLDLGDASPSLTSDAVVPSSLVVSGCEGPTKCSQNACANRGNCVQQWNAYACECDMTSYTGPTCYDESIAYEFGNNKGMVQYTFPENAQADTEEDNIALGFITTRPDAVLLRVESATTQDYMELEIVEGNIFMVYNIGSVDLPLGEIGTKVNDNAYHVVRFQRKGGNATLQLDDYNVQALTPQSHHSTVFNTMSNVQVGGKFSRNGRNRIERPFAGVIAGLSVNKLRILDLAVERDPHITIRGDVQLVTGVLDRNDLQRMQQTPASGYPGALDDLIFSGAGSGCRGDDEDECTPPFESGSGDDLITPVYVPPTKQTTTSQQGNSLSTGGSSSGGVITNGTERACDDEDCVHGSGDYGETTEQFTSTSTARGSESNNEMVTITTTGRSDVTTEQHQGSSSSSSSGSTPSYATTQSSSSSSSGGSAASTPGQVSTTSSVATSSTQRATSSSTSTSSSTTSTTTTTTTTQATPPPEIRSTVTERETTPYDIYIAGGGMGGSGRNDHDRMQLPDEHHPLPPLPPPIPPQDPPPYGPYGGNTYNTNMNNYRPKGKGGRINSIEEERTAMIIGIVAGILIAVVLVILLVLWLKSNGDRGYKTESEKAAAYGSHNPNAALLGNTSTNGSYHQQRQHHMHGGGGGGGAGQQQHHAQQQMHNGHNGNGNGGGGGGGGMMSSGSGSLGYGSDGRPQMAGLVQPKAKKRDSKDVKEWYV