Contacts of the strand formed by residues 21 - 25 (chain C) in PDB entry 5LK5
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with VAL 21 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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19C PRO* 3.7 9.5 + - + +
20C ALA* 1.3 74.1 - - - +
22C TYR* 1.3 62.8 + - - +
23C PHE 3.9 22.0 - - - +
24C LYS* 4.1 17.5 - - + +
331C LEU* 4.0 12.3 - - + -
332C ILE 3.7 2.7 - - - -
333C THR* 4.5 1.1 - - - +
338C TYR* 4.0 29.2 - - + +
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Residues in contact with TYR 22 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
20C ALA* 3.7 20.6 - - + +
21C VAL* 1.3 73.5 - - - +
23C PHE* 1.3 61.0 + - - +
81C PHE* 3.4 22.9 - - + +
82C GLU* 4.8 6.4 + - - +
84C PHE* 3.5 69.8 - + + -
85C SER 4.7 0.2 + - - -
89C GLN* 3.1 34.7 + - - -
90C THR 5.3 0.9 - - - -
91C LEU* 5.1 0.7 - - + -
332C ILE* 2.9 21.8 + - + +
333C THR* 4.0 22.2 - - - -
334C ASN* 3.8 9.0 - - + +
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Residues in contact with PHE 23 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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21C VAL* 3.3 4.5 - - - -
22C TYR* 1.3 80.2 - - - +
24C LYS* 1.3 70.8 + - - +
25C GLU* 3.9 27.8 - - + -
36C ARG* 6.0 5.8 - - + -
37C TRP* 4.0 13.0 - + - -
79C ALA* 3.6 31.2 - - + -
80C SER 4.4 7.4 - - - -
81C PHE* 4.0 28.9 - + + -
314C LEU* 4.7 12.6 - - + -
330C PHE* 4.1 19.1 - + + -
331C LEU* 3.3 7.1 - - - +
332C ILE* 2.8 52.6 + - + +
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Residues in contact with LYS 24 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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21C VAL* 4.1 22.2 - - + +
23C PHE* 1.3 86.7 - - - +
25C GLU* 1.3 65.7 + - - +
26C GLN* 3.8 16.6 + - + +
36C ARG* 5.7 1.4 + - - -
330C PHE 3.4 6.3 - - - +
331C LEU* 4.3 5.8 - - + -
338C TYR* 2.6 29.7 + - - -
342C PHE* 3.5 40.6 - - + -
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Residues in contact with GLU 25 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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23C PHE* 3.9 21.0 - - + -
24C LYS* 1.3 76.7 - - - +
26C GLN* 1.3 62.5 + - - +
27C PHE* 3.0 51.3 + - + -
33C TRP* 4.2 0.3 - - - +
36C ARG* 2.9 44.2 + - - +
37C TRP* 2.8 26.7 + - + +
328C ASP* 4.2 0.2 - - - +
329C ASN* 3.3 6.2 + - - -
330C PHE* 2.9 43.6 + - + +
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il