go_id,ontology,go_term,term_definition,evidence
GO:0001725,CC,"stress fiber","A contractile actin filament bundle that consists of short actin filaments with alternating polarity, cross-linked by alpha-actinin and possibly other actin bundling proteins, and with myosin present in a periodic distribution along the fiber.",IDA
GO:0005509,MF,"calcium ion binding","Interacting selectively and non-covalently with calcium ions (Ca2+).",IDA
GO:0005829,CC,cytosol,"The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.",IBA
GO:0005859,CC,"muscle myosin complex","A filament of myosin found in a muscle cell of any type.",TAS
GO:0006936,BP,"muscle contraction","A process in which force is generated within muscle tissue, resulting in a change in muscle geometry. Force generation involves a chemo-mechanical energy conversion step that is carried out by the actin/myosin complex activity, which generates force through ATP hydrolysis.",TAS
GO:0006937,BP,"regulation of muscle contraction","Any process that modulates the frequency, rate or extent of muscle contraction.",TAS
GO:0008307,MF,"structural constituent of muscle","The action of a molecule that contributes to the structural integrity of a muscle fiber.",NAS
GO:0030018,CC,"Z disc","Platelike region of a muscle sarcomere to which the plus ends of actin filaments are attached.",ISS
GO:0032036,MF,"myosin heavy chain binding","Interacting selectively and non-covalently with a heavy chain of a myosin complex.",IEA
GO:0070527,BP,"platelet aggregation","The adhesion of one platelet to one or more other platelets via adhesion molecules.",IMP