FUNCTION: During spermatogenesis, may act as a lectin-independent chaperone for specific client proteins such as ADAM3. Required for sperm fertility (By similarity). CALR3 capacity for calcium-binding may be absent or much lower than that of CALR. {ECO:0000250, ECO:0000269|PubMed:21590275}....
                        FUNCTION: During spermatogenesis, may act as a lectin-independent chaperone for specific client proteins such as ADAM3. Required for sperm fertility (By similarity). CALR3 capacity for calcium-binding may be absent or much lower than that of CALR. {ECO:0000250, ECO:0000269|PubMed:21590275}.
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                        GO - Biological processes (BP): 
                        cell differentiation [GO:0030154]; protein folding [GO:0006457]; spermatogenesis [GO:0007283]; ubiquitin-dependent ERAD pathway [GO:0030433]...
                        cell differentiation [GO:0030154]; protein folding [GO:0006457]; spermatogenesis [GO:0007283]; ubiquitin-dependent ERAD pathway [GO:0030433]
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                        GO - Molecular function (MF): 
                        carbohydrate binding [GO:0030246]; metal ion binding [GO:0046872]; protein folding chaperone [GO:0044183]; unfolded protein binding [GO:0051082]...
                        carbohydrate binding [GO:0030246]; metal ion binding [GO:0046872]; protein folding chaperone [GO:0044183]; unfolded protein binding [GO:0051082]
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                        GO - Cellular component (CC): 
                        endoplasmic reticulum lumen [GO:0005788]; endoplasmic reticulum membrane [GO:0005789]; nuclear envelope [GO:0005635]...
                        endoplasmic reticulum lumen [GO:0005788]; endoplasmic reticulum membrane [GO:0005789]; nuclear envelope [GO:0005635]
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