UniProtKB/Swiss-Prot O14678: Variant p.Ala304Thr

Lysosomal cobalamin transporter ABCD4
Gene: ABCD4
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Variant information Variant position:

304 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant:

LB/B The variants are classified into three categories: LP/P, LB/B and US.

LP/P: likely pathogenic or pathogenic.
LB/B: likely benign or benign.
US: uncertain significance

Residue change:

From Alanine (A) to Threonine (T) at position 304 (A304T, p.Ala304Thr). Indicates the amino acid change of the variant. The one-letter and three-letter codes for amino acids used in UniProtKB/Swiss-Prot are those adopted by the commission on Biochemical Nomenclature of the IUPAC-IUB.
Physico-chemical properties:

Change from small size and hydrophobic (A) to medium size and polar (T) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score:

0 The score within a Blosum matrix for the corresponding wild-type to variant amino acid change. The log-odds score measures the logarithm for the ratio of the likelihood of two amino acids appearing by chance. The Blosum62 substitution matrix is used. This substitution matrix contains scores for all possible exchanges of one amino acid with another:

Lowest score: -4 (low probability of substitution).
Highest score: 11 (high probability of substitution).

More information can be found on the following page
Other resources:

Links to websites of interest for the variant.

Variant rs4148077 [ dbSNP | Ensembl ]

Sequence information Variant position:

304 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length:

606 The length of the canonical sequence.
Location on the sequence:

LSYVVIAIPIFSGVYGDLSP A ELSTLVSKNAFVCIYLISCF 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                         LSYVVIAIPIFSGVYGDLSPAELSTLVSKNAFVCIYLISCF

Mouse                         LSYVVIAIPIFSGVYGDLSPTELSTLVSKNAFVCIYLISCF

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
Chain	1 – 606	Lysosomal cobalamin transporter ABCD4
Domain	39 – 332	ABC transmembrane type-1
Mutagenesis	319 – 319	Y -> A. Decreases of ATPase activity. Decreases cobalamin transport activity.
Mutagenesis	319 – 319	Y -> F. Does not affect ATPase activity. Does not affect cobalamin transport activity.

Literature citations
Cloning of human full-length CDSs in BD Creator(TM) system donor vector.
Kalnine N.; Chen X.; Rolfs A.; Halleck A.; Hines L.; Eisenstein S.; Koundinya M.; Raphael J.; Moreira D.; Kelley T.; LaBaer J.; Lin Y.; Phelan M.; Farmer A.;
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]; VARIANTS THR-304 AND LYS-368; Cloning of human full open reading frames in Gateway(TM) system entry vector (pDONR201).
Ebert L.; Schick M.; Neubert P.; Schatten R.; Henze S.; Korn B.;
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]; VARIANTS THR-304 AND LYS-368; The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).
The MGC Project Team;
Genome Res. 14:2121-2127(2004)
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]; VARIANTS THR-304 AND LYS-368; Catalog of 605 single-nucleotide polymorphisms (SNPs) among 13 genes encoding human ATP-binding cassette transporters: ABCA4, ABCA7, ABCA8, ABCD1, ABCD3, ABCD4, ABCE1, ABCF1, ABCG1, ABCG2, ABCG4, ABCG5, and ABCG8.
Iida A.; Saito S.; Sekine A.; Mishima C.; Kitamura Y.; Kondo K.; Harigae S.; Osawa S.; Nakamura Y.;
J. Hum. Genet. 47:285-310(2002)
Cited for: VARIANTS THR-304 AND LYS-368;

Disclaimer: 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.