UniProtKB/Swiss-Prot P01871: Variant p.Phe40Leu

Immunoglobulin heavy constant mu
Gene: IGHM
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Variant information Variant position:

40 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 Phenylalanine (F) to Leucine (L) at position 40 (F40L, p.Phe40Leu). 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 large size and aromatic (F) to medium size and hydrophobic (L) 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
Polymorphism:

There are several alleles. The sequence shown is that of IMGT allele IGHM*04. Additional information on the polymorphism described.
Variant description:

In IMGT allele IGHM*01. Any additional useful information about the variant.

Sequence information Variant position:

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

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

DTSSVAVGCLAQDFLPDSIT F SWKYKNNSDISSTRGFPSVL 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                         DTSSVAVGCLAQDFLPDSITFSWKYKNNSDI--SSTRGFPSVL

                              PTSTVAMGCLARDFLPGSITFSWKYEBLSAI--NSTRGFPS

Mouse                         DKNLVAMGCLARDFLPSTISFTWNYQNNTEV-IQGIRTFPT

Rabbit                        DGNLVAMGCLARDFLPSSVTFSWSFKNNSEISSRTVRTFPV

Chicken                       D-SVYTVGCAAFDFQPSSIAFTWFDSNNSSV--SGMDVIPK

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 – 474	Immunoglobulin heavy constant mu
Topological domain	1 – 450	Extracellular
Domain	6 – 102	Ig-like 1
Region	1 – 105	CH1
Glycosylation	46 – 46	N-linked (GlcNAc...) (complex) asparagine
Disulfide bond	28 – 88
Beta strand	40 – 43

Literature citations
The complete nucleotide sequence of a human immunoglobulin genomic C mu gene.
Dorai H.; Gillies S.D.;
Nucleic Acids Res. 17:6412-6412(1989)
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] (ISOFORM 1); NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 435-472 (ISOFORM 2); VARIANTS LEU-40 AND VAL-414 DEL;

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.