创建新的连接：

通过 ExternalIdentifier 提供 PDB ID，获取 BioMolecule 对象：

可视化 BioMolecule：

Get a specific biological assembly by providing the "AssemblyNumber":

Visualize the BioMolecule:

获取结构文件中的数据：

获取 RCSB PDB 中的分子的相关信息：

通过简单的文本查询从 RCSB PDB 搜索结构：

可视化其中一个结构：

用"StartIndex" 和 MaxItems 参数获取特定数量的结构：

"BioSequence" can also be "RNA" or "DNA":

Visualize the structure:

Search for a "DNA" sequence:

Visualize the structure:

Search for structures that are similar to the input structure. Here, look for structures similar to human KRAS G12C mutant in the RCSB Protein Data Bank by providing the "PDBStructureID". By default, the first element of the output is the input structure:

Visualize the first five structures to see the similarity:

it is also possible to provide the biological assembly number through "Assembly" as shown here. By default, the "AssemblyNumber" is set to 1. Here is an example of searching for structures similar to biological assembly 2 of camel single-domain VH antibody fragment:

You can also search for structures using a "BioMolecule" as input. Here, look for structures in RCSB Protein Data Bank from a structure in the ESM Metagenomic Atlas:

Search for structures that contain a zinc finger sequence motif:

Visualize the structure of the first element of the search, where zinc is in purple:

"Motif" can also accept a BioSequence:

You can also search for "DNA" or "RNA" motifs:

Visualize the structure of the first element of the search:

Search by RNA sequence motif:

Visualize the first structure of the search:

用 BioSequence 从 RCSB PDB 搜索结构：

第一个结构的 BioSequence：

将此序列与参考序列比对：

用 SmithWatermanSimilarity 将输入序列与类似结构进行比较：

两个序列之间几乎有 99% 的重叠.