Contacts of the strand formed by residues 655 - 658 (chain A) in PDB entry 1L8A
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 CYS 655 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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604A PHE* 4.1 11.2 - - - -
649A SER 4.2 5.1 - - - +
652A ILE* 3.2 26.2 + - + +
654A ASN* 1.3 78.9 - - - +
656A ILE* 1.3 62.5 + - - +
657A SER* 3.8 11.5 + - - -
686A TYR* 3.3 38.1 - - + -
688A TYR* 3.7 27.8 - - - -
766A ARG* 2.9 23.2 + - - -
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Residues in contact with ILE 656 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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653A PRO 5.0 1.3 - - - +
654A ASN 4.7 0.2 - - - -
655A CYS* 1.3 76.2 - - - +
657A SER* 1.3 60.2 + - - +
658A TYR* 3.5 29.6 + - + +
676A ARG* 4.0 17.0 - - - +
685A VAL* 3.2 43.1 - - + -
686A TYR 2.7 12.2 + - - +
687A TYR* 3.4 21.6 - - + -
688A TYR 2.9 25.0 + - - +
763A GLU* 3.7 32.5 - - + +
766A ARG* 4.2 5.6 - - - +
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Residues in contact with SER 657 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
646A HIS* 3.5 25.1 - - - -
649A SER* 2.8 30.0 + - - -
650A LEU* 5.2 0.3 - - - -
655A CYS* 3.8 7.7 + - - -
656A ILE* 1.3 77.1 - - - +
658A TYR* 1.3 60.1 + - - +
688A TYR* 3.2 12.3 - - - +
760A SER* 2.5 31.5 + - - -
762A THR* 4.7 15.4 - - - +
763A GLU* 4.3 5.1 + - - +
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Residues in contact with TYR 658 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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646A HIS* 3.2 9.6 + - - -
656A ILE* 3.5 29.9 - - + +
657A SER* 1.3 76.4 - - - +
659A ASP* 1.3 58.5 + - - +
660A PRO* 3.4 4.8 - - + +
669A ILE* 3.5 47.1 - - + -
672A ASP* 4.6 1.6 + - - -
676A ARG* 4.3 10.6 + - - -
687A TYR* 3.5 23.9 + + - -
688A TYR 2.9 9.3 + - - +
689A ILE* 3.5 4.1 - - + -
690A THR 3.1 23.9 + - - -
709A ILE 3.6 12.6 - - - -
710A ARG* 2.6 34.7 + - - +
759A THR* 3.2 22.9 - - - +
760A SER* 3.4 15.9 - - - +
763A GLU* 4.5 4.8 - - + +
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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