Variant position: 977 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: 2273 The length of the canonical sequence.
Location on the sequence:
The residue change on the sequence. Unless the variant is located at the beginning or at the end of the protein sequence, both residues upstream (20) and downstream (20) of the variant will be shown.
Residue conservation: The multiple alignment of the region surrounding the variant against various orthologous sequences.
Human QITAFLGHNGAGKTTTLSIL TGLLPPTSGTVLVGGRDIETS
Mouse QITAFLGHNGAGKTTTLSIL TGLLPPTSGTVLIGGKDIETN
Slime mold RIHSFLGPNGSGKSTTLSML TGMIEPTSGDALINGFDIRNN
Sequence annotation in neighborhood: The regions or sites of interest surrounding the variant. In general the features listed are posttranslational modifications, binding sites, enzyme active sites, local secondary structure or other characteristics reported in the cited references. The "Sequence annotation in neighborhood" lines have a fixed format:
Type: the type of sequence feature. Positions: endpoints of the sequence feature. Description: contains additional information about the feature.
Type Positions Description
1 – 2273 Retinal-specific phospholipid-transporting ATPase ABCA4
857 – 1376 Cytoplasmic
929 – 1160 ABC transporter 1
641 – 1490 Interchain
966 – 966 G -> D. Abolishes basal and retinal-stimulated ATP hydrolysis.
969 – 969 K -> M. Abolishes basal and retinal-stimulated ATP hydrolysis.
969 – 969 K -> M. Inhibits ATPase activity; when associated with M-1978. Decreases translocase activity; when associated with M-1978. Does not affect protein subcellular localization in endoplasmic reticulum; when associated with M-1978. Loss of ATP-dependent all-trans-retinal transport; when associated with M-1978. Loss in N-retinylidene-PE transfer activity. Inhibits ATPase activity with increasing retinal concentration. Does not affect N-retinylidene-PE binding. Impairs ATP-dependent release of N-retinylidene-PE. Significantly reduces PE flippase activity.
977 – 979
Novel mutations in of the ABCR gene in Italian patients with Stargardt disease.
Passerini I.; Sodi A.; Giambene B.; Mariottini A.; Menchini U.; Torricelli F.;
Cited for: VARIANTS STGD1 21-GLN--ASP-2273 DEL; LEU-68; HIS-96; LYS-96; SER-172; CYS-212; LYS-415; PRO-541; 572-ARG--ASP-2273 DEL; LYS-616; CYS-653; VAL-690; 700-TRP--ASP-2273 DEL; ASP-767; ARG-821; ARG-840; MET-931; SER-965; PRO-970; PRO-977; ASP-978; MET-1019; VAL-1038; TRP-1055; GLU-1078; LYS-1087; CYS-1098; 1099-SER--ASP-2273 DEL; CYS-1108; 1177-CYS--ASP-2273 DEL; 1332-GLN--ASP-2273 DEL; LEU-1380; 1408-TRP--ASP-2273 DEL; ILE-1433; 1461-TRP--ASP-2273 DEL; 1479-TRP--ASP-2273 DEL; SER-1484; MET-1526; ASP-1598; ASN-1696; GLU-1961; PHE-1970; SER-1977; 2030-ARG--ASP-2273 DEL; LYS-2096; GLN-2140 AND PRO-2221;
Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. They are not in any way intended to be used as a substitute for professional medical advice, diagnostic, treatment or care.