Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found in the Ig superfamily. The Ig superfamily is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. Members of this group are components of immunoglobulin, neuroglia, cell surface glycoproteins, including T-cell receptors, CD2, CD4, CD8, and membrane glycoproteins, including butyrophilin and chondroitin sulfate proteoglycan core protein. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond. Ig superfamily (IgSF) domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Typically, the V-set domains have A, B, E, and D strands in one sheet and A', G, F, C, C' and C" in the other. The structures in C1-set are smaller than those in the V-set; they have one beta sheet that is formed by strands A, B, E, and D and the other by strands G, F, C, and C'. Moreover, a C1-set Ig domain contains a short C' strand (three residues) and lacks A' and C" strand. Unlike other Ig domain sets, C2-set structures do not have a D strand. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67462189 151 HVEVKGYEDGGIHLECRSTGWYPQP-QIQWSNAKGENIPAVEAP-VVADGVGLYEVAASVIMRGGSGEGVSCIIRNSLLG 228
Cdd:cd21029   7 LSSRPSPGDGHLQLSCHVTGFYPRPiEVTWLRDGQEQMDGTQSGgILPNHDGTYQLRKTLDIAPGEGAGYSCRVDHSSLK 86

Immunoglobulin V-set domain; This domain is found in antibodies as well as neural protein P0 and CTL4 amongst others.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67462189    36 PSGPILAMVGEDADLPCHLFPTMSAETMELKWV----SSSLRQVVNVYADGKEVEdrqsaPYRGRTSILRDgITAGKAAL 111
Cdd:pfam07686   2 TPREVTVALGGSVTLPCTYSSSMSEASTSVYWYrqppGKGPTFLIAYYSNGSEEG-----VKKGRFSGRGD-PSNGDGSL 75

                          90       100       110
                  ....*....|....*....|....*....|...
gi 67462189   112 RIHNVTASDSGKYLCY-FQDGDFYEKALVELKV 143
Cdd:pfam07686  76 TIQNLTLSDSGTYTCAvIPSGEGVFGKGTRLTV 108

Immunoglobulin domain of Cluster of Differentiation (CD) 1; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin domain of Cluster of Differentiation (CD) 1. CD1 family of transmembrane glycoproteins, are structurally related to the major histocompatibility complex (MHC) proteins and form heterodimers with beta-2-microglobulin. They mediate the presentation of primarily lipid and glycolipid antigens of self or microbial origin to T cells. The human genome contains five CD1 family genes (CD1a, CD1b, CD1c, CD1d, and CD1e) organized in a cluster on chromosome 1. The CD1 family members are thought to differ in their cellular localization and specificity for particular lipid ligands. CD1a localizes to the plasma membrane and to recycling vesicles of the early endocytic system. Alternative splicing results in multiple transcript variants. Immunoglobulin (Ig) domain of major histocompatibility complex (MHC) class I alpha chain. Class I MHC proteins bind antigenic peptide fragments and present them to CD8+ T lymphocytes. Class I molecules consist of a transmembrane alpha chain and a small chain called the beta-2-microglobulin. The alpha chain contains three extracellular domains, two of which fold together to form the peptide-binding cleft (alpha1 and alpha2), and one which has an Ig fold (alpha3). Peptide binding to class I molecules occurs in the endoplasmic reticulum (ER) and involves both chaperones and dedicated factors to assist in peptide loading. Class I MHC molecules are expressed on most nucleated cells. C1-set Ig domains have one beta sheet that is formed by strands A, B, E, and D and the other strands by G, F, C, and C'.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67462189 151 HVEVKGYEDGGIHLECRSTGWYPQP-QIQWSNAKGENIPAVEAP-VVADGVGLYEVAASVIMRGGSGEGVSCIIRNSLLG 228
Cdd:cd21029   7 LSSRPSPGDGHLQLSCHVTGFYPRPiEVTWLRDGQEQMDGTQSGgILPNHDGTYQLRKTLDIAPGEGAGYSCRVDHSSLK 86

Immunoglobulin Variable (IgV) domain of B7-H4; The members here are composed of the immunoglobulin variable (IgV) domain of B7-H4 (also known as B7-S1, B7x, or Vtcn1). B7-H4 is one of the B7 family of immune-regulatory ligands that act as negative regulators of T cell function; it contains one IgV domain and one IgC domain. The B7-family consists of structurally related cell-surface protein ligands, which bind to receptors on lymphocytes that regulate immune responses. The binding of B7-H4 to unidentified receptors results in the inhibition of TCR-mediated T cell proliferation, cell-cycle progression and IL-2 production. As a co-inhibitory molecule, B7-H4 is widely expressed in tumor tissues and its expression is significantly associated with poor prognosis in human cancers such as glioma, pancreatic cancer, oral squamous cell carcinoma, renal cell carcinoma, and lung cancer.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67462189  41 LAMVGEDADLPCHLFPTMSAETMELKWVSSSLRQVVNVYADGKEVEDRQSAPYRGRTSILRDGITAGKAALRIHNVTASD 120
Cdd:cd20984   8 AGNIGEDGILSCTFTPDIKLSDIVIQWLKEGDSGLVHEFKEGKDELSRQSPMFRGRTSLFADQVHVGNASLRLKNVQLTD 87

                ....*..
gi 67462189 121 SGKYLCY 127
Cdd:cd20984  88 AGTYLCI 94

Immunoglobulin Variable (IgV) domain in HERV-H LTR-associating 2 (HHLA2); The members here are composed of the immunoglobulin variable (IgV) region in HERV-H LTR-associating 2 (HHLA2; also known as B7-H7/B7 homolog 7). HHLA2 is a member of the B7 family of immune regulatory proteins. Mature human HHLA2 consists of an extracellular domain (ECD) with three immunoglobulin-like domains, a transmembrane segment, and a cytoplasmic domain. HHLA2 is widely expressed in human cancers including non-small cell lung carcinoma (NSCLS), triple negative breast cancer (TNBC), and melanoma, but has limited expression on normal tissues. Interestingly, unlike other members of B7 family, HHLA2 is not expressed in mice or rats. HHLA2 functions as a T cell coinhibitory molecules as it inhibits the proliferation of activated CD4(+) and CD8(+) T cells and their cytokine production. Furthermore, HHLA2 is constitutively expressed on the surface of human monocytes and is induced on B cells after stimulation, however it is not inducible on T cells.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67462189  39 PILAMVGEDADLPCHlFPTMSAETMElkWVSSSLRQVVNVYADGKEVEDRQSAPYRGRTSILRDGITAGKAALRIHNVTA 118
Cdd:cd16091   6 IVVCLLSEDCILPCS-FTPGSEVVIH--WYKQDSDIKVHSYYYGKDQLESQDQRYRNRTSLFKDQISNGNASLLLRRVQL 82

                ....*....
gi 67462189 119 SDSGKYLCY 127
Cdd:cd16091  83 QDEGRYKCY 91

Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67462189     37 SGPILAMVGEDADLPCHLFptmSAETMELKWvsssLRQvvnvyaDGKEVedrqsaPYRGRTSILRDGitaGKAALRIHNV 116
Cdd:smart00410   1 PPSVTVKEGESVTLSCEAS---GSPPPEVTW----YKQ------GGKLL------AESGRFSVSRSG---STSTLTISNV 58

                           90       100
                   ....*....|....*....|....*..
gi 67462189    117 TASDSGKYLCYFQDGDFYEKALVELKV 143
Cdd:smart00410  59 TPEDSGTYTCAATNSSGSASSGTTLTV 85

Immunoglobulin (Ig)-like domain of human cartilage link protein (LP), and similar domains; The members here are composed of the immunoglobulin (Ig)-like domain similar to that found in human cartilage link protein (LP; also called hyaluronan and proteoglycan link protein). In cartilage, chondroitin-keratan sulfate proteoglycan (CSPG), aggrecan, forms cartilage link protein stabilized aggregates with hyaluronan (HA). These aggregates contribute to the tissue's load bearing properties. Aggregates having other CSPGs substituting for aggrecan may contribute to the structural integrity of many different tissues. Members of the vertebrate HPLN (hyaluronan/HA and proteoglycan binding link) protein family are physically linked adjacent to CSPG genes.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67462189  36 PSGPILAMVGEDADLPCHLF--PTMSAET-MELKW--VSSSLRQVVNVY-ADGKEveDRQSAPYRGRTSILRDGitAGKA 109
Cdd:cd05877   3 VQAKVFSHRGGNVTLPCRYHyePELSAPRkIRVKWtkLEVDYAKEEDVLvAIGTR--HKSYGSYQGRVFLRRAD--DLDA 78

                        90       100       110
                ....*....|....*....|....*....|....
gi 67462189 110 ALRIHNVTASDSGKYLCYFQDGDFYEKALVELKV 143
Cdd:cd05877  79 SLVITDLRLEDYGRYRCEVIDGLEDESVVVALRL 112

Immunoglobulin Variable (V) domain of the Coxsackievirus and Adenovirus Receptor (CAR), and similar proteins; The members here are composed of the Variable (V) domain of the Coxsackievirus and Adenovirus Receptor (CAR), and similar proteins. CAR, which is encoded by human CXADR gene, is a cell adhesion molecule of the Immunoglobulin (Ig) superfamily. The CAR acts as a type I membrane receptor for group B1-B6 coxsackie viruses and subgroup C adenoviruses. For instance, adenovirus interacts with the coxsackievirus and adenovirus receptor to enter epithelial airway cells. The CAR is also shown to be involved in physiological processes such as neuronal and heart development, epithelial tight junction integrity, and tumor suppression. The CAR is a component of the epithelial apical junction complex that may function as a homophilic cell adhesion molecule and is essential for tight junction integrity. The CAR is also involved in transepithelial migration of leukocytes through adhesive interactions with JAML a transmembrane protein of the plasma membrane of leukocytes. The interaction between both receptors also mediates the activation of gamma-delta T-cells, a subpopulation of T-cells residing in epithelia and involved in tissue homeostasis and repair. The CAR is composed of one V-set and one C2-set Ig module, a single transmembrane helix, and an intracellular domain. This group belongs to the V-set of IgSF domains, having A, B, E and D strands in one beta-sheet and A', G, F, C, C' and C" in the other

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67462189  44 VGEDADLPCHLfpTMSAE---TMELKWV---SSSLRQVVNVYADGKeVEDRQSAPYRGRTSILRDGItAGKAALRIHNVT 117
Cdd:cd20960  14 AGENVTLPCHH--QLGLEdqgTLDIEWLllpSDKVEKVVITYSGDR-VYNHYYPALKGRVAFTSNDL-SGDASLNISNLK 89

                        90       100
                ....*....|....*....|....*
gi 67462189 118 ASDSGKYLCYFQDGDFYEKALVELK 142
Cdd:cd20960  90 LSDTGTYQCKVKKAPGYAWSKITLI 114

Immunoglobulin variable domain (IgV) in Cluster of Differentiation (CD) 86; The members here are composed of the immunoglobulin variable region (IgV) in the Cluster of Differentiation (CD) 86). Glycoproteins B7-1 (also known as cluster of differentiation (CD) 80) and B7-2 (also known as CD86) are expressed on antigen-presenting cells and deliver the co-stimulatory signal through CD28 and CTLA-4 (also known as CD152) on T cells. signaling through CD28 augments the T-cell response, whereas CTLA-4 signaling attenuates it. The CTLA-4 and B7-2 monomers are both two-layer beta-sandwiches that display the chain topology characteristic of the immunoglobulin variable (V-type) domains present in antigen receptors. The front and back sheets of B7-2 are composed of AGFCC'C" and BED strands, respectively. Members of the IgV family are components of immunoglobulin (Ig) and T cell receptors. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. In Ig, each chain is composed of one variable domain (IgV) and one or more constant domains (IgC); these names reflect the fact that the variability in sequences is higher in the variable domain than in the constant domain. Within the variable domain, there are regions of even more variability called the hypervariable or complementarity-determining regions (CDRs) which are responsible for antigen binding. A predominant feature of most Ig domains is the disulfide bridge connecting 2 beta-sheets with a tryptophan residue packed against the disulfide bond.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67462189  40 ILAMVGEDADLPCHlFPT---MSAETMELKWVSSSLRQVVNVYAdGKEVEDRQSAPYRGRTSILRDGITagkaaLRIHNV 116
Cdd:cd16087   3 IQAYFNETAYLPCQ-FKNpqnISLSELVVFWQDQKKLVLYELYL-GKEKLDNVNSKYIGRTSFDQENWT-----LQLHNV 75

                        90
                ....*....|...
gi 67462189 117 TASDSGKYLCYFQ 129
Cdd:cd16087  76 QIKDQGTYQCFIH 88

Immunoglobulin (Ig)-like domain of the aggrecan-like chondroitin sulfate proteoglycan core protein (CSPG); The members here are composed of the immunoglobulin (Ig)-like domain of the aggrecan-like chondroitin sulfate proteoglycan core proteins (CSPGs). Included in this group are the Ig domains of other CSPGs: versican, and neurocan. In CSPGs, this Ig-like domain is followed by hyaluronan (HA)-binding tandem repeats, and a C-terminal region with epidermal growth factor-like, lectin-like, and complement regulatory protein-like domains. Separating these N- and C-terminal regions is a nonhomologous glycosaminoglycan attachment region. In cartilage, aggrecan forms cartilage link protein stabilized aggregates with hyaluronan (HA). These aggregates contribute to the tissue's load bearing properties. Aggrecan and versican have a wide distribution in connective tissue and extracellular matrices. Neurocan is localized almost exclusively in nervous tissue. Aggregates having other CSPGs substituting for aggrecan may contribute to the structural integrity of many different tissues. Members of the vertebrate HPLN (hyaluronan/HA and proteoglycan binding link) protein family are physically linked adjacent to CSPG genes.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67462189  35 GPSGPILAMVGEDADLPCHLF-------PTMSAETMELKW-----VSSSLRQVVNVYADGKEVEDRQSapYRGRTSILRD 102
Cdd:cd05878   2 PQSSPVRVLLGTSVTLPCYFIdpphpvtPSTAPLAPRIKWskvsvDGKKEKEVVLLVATEGRVRVNSA--YQGRVSLPNY 79

                        90       100       110       120
                ....*....|....*....|....*....|....*....|.
gi 67462189 103 GITAGKAALRIHNVTASDSGKYLCYFQDGDFYEKALVELKV 143
Cdd:cd05878  80 PAIPSDATLEVQSLRASDSGLYRCEVMHGIEDSQDTVELVV 120

Immunoglobulin I-set domain;

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67462189    32 SVLGPSGPILAMVGEDADLPCHlfpTMSAETMELKWvssslrqvvnvYADGKEVedRQSAPYRgrtsILRDGitaGKAAL 111
Cdd:pfam07679   2 KFTQKPKDVEVQEGESARFTCT---VTGTPDPEVSW-----------FKDGQPL--RSSDRFK----VTYEG---GTYTL 58

                          90
                  ....*....|....*
gi 67462189   112 RIHNVTASDSGKYLC 126
Cdd:pfam07679  59 TISNVQPDDSGKYTC 73

Immunoglobulin Variable (IgV) domain of B7-H2 (B7 homolog 2); The members here are composed of the immunoglobulin variable (IgV) domain of B7-H2 (B7 homolog 2 also known as ICOSL (inducible T cell costimulator ligand) or CD275). B7-H2 is a ligand for the T-cell-specific cell surface receptor ICOS and acts as a costimulatory signal for T-cell proliferation and cytokine secretion. The interaction of ICOS with ICOSL (B7-H2) regulates T cell activation and expansion, is involved in T cell dependent B cell activation, and T-helper cell differentiation. It is a member of the B7 family of immune regulatory proteins and shares homology with other B7 ligands, such as B7-1, B7-2, B7-H1 (PD-L1), PD-L2, and B7-H3. The extracellular domains of B7 proteins contain two Ig-like domains and all members have short cytoplasmic domains. These ligands are typically expressed on antigen presenting cells (such as macrophages, B cells and dendritic cells) and have the ability to regulate T-cell proliferation and function. Tumor cells are also capable of expressing the B7 family members in order to evade immune surveillance.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67462189  42 AMVGEDADLPChLFPTMSA---ETMELKWVSSSLRQVVNVYADGKEVEDRQSAPYRGRTSILRDGITAGKAALRIHNVTA 118
Cdd:cd20935   5 AMVGSDVELSC-ICPEGSRfdlNDLYVYWQISESETVVTYHLPQNSSLENVDSHYRNRALLSLDSMKQGDFSLRLFNVTP 83

                ....*...
gi 67462189 119 SDSGKYLC 126
Cdd:cd20935  84 QDEQKFHC 91

Immunoglobulin variable (IgV)-like domain in complement receptor of the immunoglobulin superfamily (CRIg); The members here are composed of the immunoglobulin variable (IgV) region of the complement receptor of the immunoglobulin superfamily (CRIg). The N-terminal domain of CRIg (also known as Z39Ig and V-set and Ig domain-containing 4 (VSIG4) belongs to the IgV family of immunoglobulin-like domains while the C-terminal domain of CRIg belongs to the IgC family of immunoglobulin-like domains. Like all members of this family, the CRIg domain contains two beta-sheets: one composed of strands A', G, F, C, C' and C", and the other of strands B, E and D. The complement system is an important part of the innate immune system and is required for removal of pathogens from the bloodstream. After exposure to pathogens, the third component of the complement system, C3, is cleaved to C3b which, after recruitment of factor B, initiates formation of the alternative pathway convertases. CRIg, a complement receptor expressed on macrophages, binds to C3b and iC3b mediating phagocytosis of the particles. It is also a potent inhibitor of the alternative pathway convertases and a negative regulator of T cell activation. The Ig superfamily is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. Members of this group are components of immunoglobulin, neuroglia, cell surface glycoproteins, such as, T-cell receptors, CD2, CD4, CD8, and membrane glycoproteins, such as, butyrophilin and chondroitin sulfate proteoglycan core protein. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67462189  47 DADLPCHLFPTMSAETMELKWVSSSLRQVVNVYADGKEVEDRQSAPYRGRTSILRDgiTAGKAALRIHNVTASDSGKYLC 126
Cdd:cd16089  16 SVNLPCTYVPEEGYTQVLVKWLVQRDSDPVTIFLRDSSGDHIQQAKYRGRLEVSKD--TPGDVSLQLDTLEMDDRGHYTC 93

Immunoglobulin variable domain (IgV); The members here are composed of the immunoglobulin variable domain (IgV). The IgV family contains the standard Ig superfamily V-set AGFCC'C"/DEB domain topology, and are components of immunoglobulin (Ig) and T cell receptors. The basic structure of Ig molecules is a tetramer of two light chains and two heavy chains linked by disulfide bonds. In Ig, each chain is composed of one variable domain (IgV) and one or more constant domains (IgC); these names reflect the fact that the variability in sequences is higher in the variable domain than in the constant domain. Within the variable domain, there are regions of even more variability called the hypervariable or complementarity-determining regions (CDRs) which are responsible for antigen binding. A predominant feature of most Ig domains is the disulfide bridge connecting 2 beta-sheets with a tryptophan residue packed against the disulfide bond. Ig superfamily (IgSF) domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Typically, the V-set domains have A, B, E and, D strands in one sheet and A', G, F, C, C', and C" strands in the other.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67462189  36 PSGPILAMVGEDADLPCHLfpTMSAETMELKWV----SSSLRQVVNVYADGKEVEDRQSapyrGRTSILRDGITagKAAL 111
Cdd:cd00099   4 SPRSLSVQEGESVTLSCEV--SSSFSSTYIYWYrqkpGQGPEFLIYLSSSKGKTKGGVP----GRFSGSRDGTS--SFSL 75

                        90
                ....*....|....*
gi 67462189 112 RIHNVTASDSGKYLC 126
Cdd:cd00099  76 TISNLQPEDSGTYYC 90

Immunoglobulin domain of Cluster of Differentiation (CD) 1; member of the C1-set of Ig superfamily (IgSF) domains; The members here are composed of the immunoglobulin domain of Cluster of Differentiation (CD) 1. CD1 family of transmembrane glycoproteins, are structurally related to the major histocompatibility complex (MHC) proteins and form heterodimers with beta-2-microglobulin. They mediate the presentation of primarily lipid and glycolipid antigens of self or microbial origin to T cells. The human genome contains five CD1 family genes (CD1a, CD1b, CD1c, CD1d, and CD1e) organized in a cluster on chromosome 1. The CD1 family members are thought to differ in their cellular localization and specificity for particular lipid ligands. CD1a localizes to the plasma membrane and to recycling vesicles of the early endocytic system. Alternative splicing results in multiple transcript variants. Immunoglobulin (Ig) domain of major histocompatibility complex (MHC) class I alpha chain. Class I MHC proteins bind antigenic peptide fragments and present them to CD8+ T lymphocytes. Class I molecules consist of a transmembrane alpha chain and a small chain called the beta-2-microglobulin. The alpha chain contains three extracellular domains, two of which fold together to form the peptide-binding cleft (alpha1 and alpha2), and one which has an Ig fold (alpha3). Peptide binding to class I molecules occurs in the endoplasmic reticulum (ER) and involves both chaperones and dedicated factors to assist in peptide loading. Class I MHC molecules are expressed on most nucleated cells. C1-set Ig domains have one beta sheet that is formed by strands A, B, E, and D and the other strands by G, F, C, and C'.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67462189 151 HVEVKGYEDGGIHLECRSTGWYPQP-QIQWSNAKGENIPAVEAP-VVADGVGLYEVAASVIMRGGSGEGVSCIIRNSLLG 228
Cdd:cd21029   7 LSSRPSPGDGHLQLSCHVTGFYPRPiEVTWLRDGQEQMDGTQSGgILPNHDGTYQLRKTLDIAPGEGAGYSCRVDHSSLK 86