UniProtKB/Swiss-Prot P00751: Variant p.Ala736Ser

Complement factor B
Gene: CFB
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Variant information Variant position:

736 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 Serine (S) at position 736 (A736S, p.Ala736Ser). 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 small size and polar (S) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score:

1 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
Polymorphism:

Two major variants, F and S, and 2 minor variants, as well as at least 14 very rare variants, have been identified. Additional information on the polymorphism described.
Variant description:

In allele FA. Any additional useful information about the variant.

Sequence information Variant position:

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

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

VISWGVVDVCKNQKRQKQVP A HARDFHINLFQVLPWLKEKL 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                         VISWGVVDVCKNQKRQKQVPAHARDFHINLFQVLPWLKEKL

Gorilla                       VISWGVVDVCKNQKRQKQVPAHARDFHINLFQVLPWLKEKL

Chimpanzee                    VISWGVVDVCKNQKRQKQVPAHARDFHINLFQVLPWLKEKL

Mouse                         VISWGVVDVCRDQRRQQLVPSYARDFHINLFQVLPWLKDKL

Bovine                        VISWGVVDVC---KRPQQVPGYARDFHINLYQVLPWLKEKL

Slime mold                    -----------------------------------------

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	26 – 764	Complement factor B
Chain	260 – 764	Complement factor B Bb fragment
Domain	477 – 757	Peptidase S1
Alternative sequence	622 – 764	Missing. In isoform 2.
Helix	735 – 737

Literature citations
Molecular characterization of human complement factor B subtypes.
Davrinche C.; Abbal M.; Clerc A.;
Immunogenetics 32:309-312(1990)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1); VARIANTS ARG-28; GLN-28; GLN-32 AND SER-736;

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.