LMPD Database

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LMP010884

UniProt Annotations

Entry Information
Gene Nameprotein shoot gravitropism 2
Protein EntrySHGR2_ARATH
UniProt IDQ8W5R2
SpeciesArabidopsis
Comments
Comment typeDescription
Developmental StageExpressed in young seedlings and progressively confined in the elongation zone of the root during seedlings growth. {ECO:0000269|PubMed:11826298}.
Disruption PhenotypeAbnormal amyloplast sedimentation and shoot gravitropism. Abnormal gravitropism in both inflorescence stems and hypocotyls accompanied by misshapen seeds and seedlings, including leaf movement in darkness. Reduced formation of vacuolar membrane 'bulbs'. The sgr2-1 mutant has no gravitropic response in inflorescence stems but a reduced gravitropic response in hypocotyls. {ECO:0000269|PubMed:11826297, ECO:0000269|PubMed:11826298, ECO:0000269|PubMed:12024223, ECO:0000269|PubMed:16344262, ECO:0000269|PubMed:21645145, ECO:0000269|PubMed:8819871}.
FunctionInvolved in vacuolar formation or function (e.g. formation of vacuolar membrane 'bulbs'). Required for amyloplast sedimentation in the endodermis during shoot gravitropism, which are thus acting as statoliths. Particularly important for the negative gravitropism leading to leaf movement observed in darkness. {ECO:0000269|PubMed:11826297, ECO:0000269|PubMed:11826298, ECO:0000269|PubMed:12024223, ECO:0000269|PubMed:16344262, ECO:0000269|PubMed:21645145, ECO:0000269|PubMed:8819871}.
Sequence CautionSequence=AAG51263.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305}; Sequence=AAG60149.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305};
SimilarityContains 1 DDHD domain. {ECO:0000255|PROSITE- ProRule:PRU00378}.
Subcellular LocationVacuole membrane {ECO:0000269|PubMed:11826298}. Note=Detected in small organelles membranes.
SubunitForms oligomers. {ECO:0000250}.
Tissue SpecificityExpressed in roots, hypocotyls, leaves, stems and floral buds, and, at low levels, in siliques. {ECO:0000269|PubMed:11826297}.